CHEMICAL RESISTANT CHART AND WARNING
Chemical resistant chart and warning
Slovent information chart
Aromatic solvents: benzene, cumene, p-cumene, naftalene, toluene, xylene, cresol, styrene, cyclohexane and combinations.
Alifatic solvents: propane, butane, pentane, hexane, heptanes, dipetene, tripropylene.
Halogenous solvents: chloroform, dichorobenzene, dichloroethylene, methylenbromide, methylen chloride, benzyl chloride, carbon tetrachlo-ride, trichloroethylene, carbon disulphite, turpentine, perchloroethylene, dichloroethane.
Ketonic solvents: acetone, methyl ketone, isobutyl ketone, methyl ethyl ketone, methyl isobutyl ketone.
Esters solvents: butyl acetate, methyl acetate, anyl acetate, isobutyl acetate.
Amines: aniline, ethylene diamine, diethanol amine, triethanolamine, dimethyl amine, monoethanolamine.
Alcohols: methanol, ethanol, propanol, butanol, glycerol
Warning!
The following information is based on highly reliable laboratory tests. The list, however, should be used only as a guide since we must assume that when choosing the rubber compound, things may very such as the temperature, fluid concentration, type of solvent, and working conditions.
All the data are considered valid at 20°C (70°F) except where specified.
Slovent information chart
Aromatic solvents: benzene, cumene, p-cumene, naftalene, toluene, xylene, cresol, styrene, cyclohexane and combinations.
Alifatic solvents: propane, butane, pentane, hexane, heptanes, dipetene, tripropylene.
Halogenous solvents: chloroform, dichorobenzene, dichloroethylene, methylenbromide, methylen chloride, benzyl chloride, carbon tetrachlo-ride, trichloroethylene, carbon disulphite, turpentine, perchloroethylene, dichloroethane.
Ketonic solvents: acetone, methyl ketone, isobutyl ketone, methyl ethyl ketone, methyl isobutyl ketone.
Esters solvents: butyl acetate, methyl acetate, anyl acetate, isobutyl acetate.
Amines: aniline, ethylene diamine, diethanol amine, triethanolamine, dimethyl amine, monoethanolamine.
Alcohols: methanol, ethanol, propanol, butanol, glycerol
Warning!
The following information is based on highly reliable laboratory tests. The list, however, should be used only as a guide since we must assume that when choosing the rubber compound, things may very such as the temperature, fluid concentration, type of solvent, and working conditions.
All the data are considered valid at 20°C (70°F) except where specified.
| 1 | Suitable |
| 2 | Limit any exposure |
| 3 | Not suitable |
| 4 | No data |
| fluid or material conveyed | SBR | NR | EPDM | EPR | IIR | CR | NBR | CPE | Hypalon | Viton | XLPE | UHMWPE | Teflon |
| Acetaldehyde | 3 | 2 | 2 | 1 | 2 | 2 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Acetic Acid 10% | 2 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 2 | 2 | 1 | 1 | 1 |
| Acetic Acid 50% | 3 | 3 | 2 | 1 | 2 | 2 | 3 | 1 | 2 | 2 | 1 | 1 | 1 |
| Acetic Acid, glacial | 3 | 3 | 2 | 1 | 2 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Acetic Anidride | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 1 | 2 | 3 | 1 | 1 | 1 |
| Acetone | 3 | 3 | 1 | 1 | 1 | 3 | 3 | 1 | 3 | 3 | 1 | 1 | 1 |
| Acetone cyanohidrin | - | - | 1 | 1 | 2 | - | - | - | - | - | 1 | 1 | 1 |
| Acetophenone | - | - | 2 | 1 | 2 | - | - | 2 | - | - | 1 | 1 | 1 |
| Acetyl Acetone | 3 | 3 | 1 | 1 | 2 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Acetyl chloride | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 1 | 3 | 1 | 1 | 2 | 1 |
| Acetylene | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Acetylene dichloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 1 |
| Acqua regia | - | - | - | - | - | - | - | 2 | - | 2 | 3 | 3 | 1/2 |
| Acrolein | 3 | 3 | 2 | 2 | 2 | - | - | - | 2 | 1 | 1 | 2 | 1 |
| Acrylonitrile | - | - | 3 | 3 | 3 | - | - | 1 | - | 3 | 1 | 2 | 1 |
| Adipic acid | 2 | - | 2 | 1 | 2 | 2 | - | - | - | - | 1 | 1 | 1 |
| Air 160 °C | 3 | 3 | 2 | 1 | 2 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 1 |
| Air 60°C | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Allyl acetate | - | - | - | - | - | - | - | - | - | 2 | 1 | 1 | 1 |
| Allyl Alcohol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Allyl bromide | - | - | - | - | - | - | - | 2 | - | 2 | 1 | 2 | 1 |
| Allyl chloride | - | - | - | - | - | - | - | 2 | - | 2 | 1 | 2 | 1 |
| Aluminium acetate | 2 | 2 | 1 | 1 | 2 | 2 | 3 | 1 | 2 | - | 1 | 1 | 1 |
| Aluminium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Aluminium fluoride | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Aluminium hydroxide | 2 | 1 | - | 1 | 1 | 1 | - | 1 | 2 | 2 | 1 | 1 | 1 |
| Aluminium nitrate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Aluminium sulfate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Aminobenzene | - | - | - | - | - | - | - | 2 | - | - | 1 | 2 | 1 |
| Aminoethanol | 2 | 2 | 1 | 1 | 1 | - | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Ammonia anhydrous | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | - | 2 | 2 | 1/2 |
| Ammonia sol. 10% | 2 | 2 | 1 | 1 | 1 | 1 | - | 1 | 1 | - | 1 | 1 | 1 |
| Ammonia sol. 50% | 2 | 2 | 1 | 1 | - | 1 | - | 1 | 1 | - | 1 | 1 | 1 |
| Ammonium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Ammonium hidroxide | 2 | 2 | 2 | 1 | - | 1 | - | 1 | 2 | 3 | 1 | 1 | 1 |
| Ammonium nitrate | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Ammonium phosphate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Ammonium sulphate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Ammonium sulphite | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Ammonium thiosulph. | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Amyl acetate | 3 | 3 | 3 | 3 | 2 | 2 | - | - | - | - | 1 | 1 | 1 |
| Amyl acetone | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - | 1 | 1 | 1 |
| Amyl alcohol | 2 | 2 | 2 | 1 | 2 | - | - | 1 | - | - | 1 | 1 | 1 |
| Amyl bromide | 3 | 3 | 2 | 2 | - | - | - | 2 | - | - | 1 | 1 | 1 |
| Amyl chloride | 3 | 3 | 2 | 2 | - | - | - | 2 | - | - | 1 | 1 | 1 |
| Amyl oleate | - | - | - | - | - | - | 1 | - | - | - | 1 | 1 | 1 |
| Amyl phenol | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Amyl phthalate | - | - | 2 | 1 | 2 | - | - | - | - | 2 | 1 | 1 | 1 |
| Amylamine | 2 | 2 | 2 | 1 | 1 | - | - | 2 | - | - | 1 | 1 | 1 |
| Amylamine | 2 | 2 | - | 1 | 2 | - | - | - | 3 | - | 1 | 1 | 1 |
| Anethole | 3 | 3 | 3 | 3 | 3 | - | 3 | 2 | - | 2 | 2 | 3 | 1 |
| Aniline | 3 | 3 | 2 | 1 | 2 | - | - | 2 | - | 2 | 1 | 1 | 1 |
| Animal fats | 3 | 3 | 3 | 3 | 1/2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| Antimony pentachlorid | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Aromatic tar | - | - | - | - | - | - | 2 | - | - | 1 | 1 | 2 | 1 |
| Arsenic acid | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ascorbic acid | - | - | - | 1 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Asphalt 130°C | - | - | - | - | - | - | 3 | - | - | 2 | 3 | 3 | 1/2 |
| Asphalt 80°C | - | - | - | - | - | - | 1 | - | - | 1 | 3 | 2 | 1 |
| ASTM FUEL A | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| ASTM FUEL B | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 | 1 | 1 | 1 |
| ASTM FUEL C | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 1 | 2 | 2 | 1 |
| ASTM OIL n°1 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| ASTM OIL n°2 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| ASTM OIL n°3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 | 1 | 1 | 1 |
| Banana oil | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| Barium carbonate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Barium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Barium hydroxide | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Barium sulfide | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Beer | 2 | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
| Beet sugar liquors | 2 | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
| Benzal chloride | - | - | - | 2 | - | - | - | - | - | - | 1 | 1 | 1 |
| Benzaldehyde | 3 | 3 | 2 | 1 | 2 | - | 3 | - | - | - | 1 | 1 | 1 |
| Benzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 1 |
| Benzene carboxylic ac. | - | - | - | - | - | - | - | 2 | - | 1 | 1 | 1 | 1 |
| Benzene sulfon ac.10% | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Benzine petrol ether | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Benzine petrol naphtha | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Benzoic acid | 3 | 3 | 3 | 3 | 3 | 3 | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Benzoic aldehyde | 3 | 3 | 2 | 1 | 2 | - | - | 2 | - | - | 1 | 1 | 1 |
| Benzotrichloride | - | - | - | - | - | - | - | - | - | - | 2 | 3 | 1 |
| Benzyl acetate | 3 | 3 | 3 | 2 | 2 | - | - | 2 | - | 3 | 1 | 2 | 1 |
| Benzyl alcohol | 3 | 3 | 3 | 2 | 3 | 3 | - | 1 | - | 1 | 1 | 1 | 1 |
| Benzyl chloride | - | - | - | 2 | - | - | - | - | - | 2 | 1 | 2 | 1 |
| Bichromate of soda | - | - | - | 2 | - | - | - | - | - | - | 1 | 1 | 1 |
| Black sulphate liquor | - | - | - | 1 | 1 | 1 | - | - | - | 1 | 1 | 1 | 1 |
| Bleach (2-12% clorine) | - | - | - | 2 | - | - | - | - | - | 2 | 1 | 2 | 1 |
| Bordeaux mixture | - | - | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Boric acid | 1 | - | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Brine | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Bromic acid | - | - | - | - | - | - | - | - | - | 2 | 3 | 3 | 1/2 |
| Bromine | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 1/2 |
| Bromobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 1/2 |
| Bromochloromethane | 3 | 3 | 3 | 2 | - | 3 | 3 | 2 | - | - | 2 | 2 | 1 |
| Bromoethane | 3 | 3 | 3 | - | - | - | 3 | 2 | - | - | - | - | 1 |
| Bromotoluene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | - | - | 1 |
| Bunker oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 2 | - | 1 | 1 | 1 | 1 |
| Butadiene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 |
| Butane | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 |
| Butanoic acid | - | - | - | 2 | - | - | - | 1 | - | 1 | 1 | - | 1 |
| Butanol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Butanone | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Butoxiethanol | - | - | - | 1 | - | - | - | 1 | - | - | 1 | - | 1 |
| Butyl acetate | 3 | 3 | - | 2 | 2 | - | - | 2 | - | 3 | 1 | 1 | 1 |
| Butyl acrylate | 3 | 3 | 3 | 3 | 3 | 3 | - | 2 | 3 | 3 | 1 | 2 | 1 |
| Butyl alcohol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Butyl aldehyde | - | - | 2 | 1 | 2 | - | - | - | - | - | 1 | 1 | 1 |
| Butyl amine | - | - | 2 | 1 | 2 | - | 2 | 2 | - | - | 1 | 1 | 1 |
| Butyl benzene | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Butyl benzoate | - | - | - | 2 | - | - | - | - | - | 1 | 1 | - | 1 |
| Butyl bromide | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | - | 1 |
| Butyl butyrate | - | - | - | - | - | - | - | - | - | - | 2 | - | 1 |
| Butyl carbitol | 3 | 3 | 2 | 1 | - | - | - | - | 3 | 1 | 1 | 1 | 1 |
| Butyl cellosolve | 3 | 3 | 2 | 1 | 2 | 2 | 3 | 1 | 2 | 3 | 1 | 1 | 1 |
| Butyl chloride | 3 | 3 | 3 | - | - | 3 | 3 | 3 | - | 2 | 2 | - | 1 |
| Butyl ether | 3 | 3 | - | - | - | 2 | 3 | 2 | - | - | 1 | 1 | 1 |
| Butyl ether acetaldehy | - | - | - | 1 | 2 | - | - | - | - | - | 1 | - | 1 |
| Butyl ethil ether | 3 | 3 | - | 2 | - | - | 3 | - | 3 | - | 1 | - | 1 |
| Butyl glicol | - | - | 2 | 1 | - | - | - | - | - | - | 1 | 1 | 1 |
| Butyl oleate | 3 | 3 | - | 2 | 2 | - | 3 | - | - | 1 | 1 | - | 1 |
| Butyl Phenol | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Butyl phthalate | 3 | 3 | - | 2 | 2 | - | - | - | - | 2 | 1 | 1 | 1 |
| Butyl stearate | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 3 | 1 | 1 | 1 |
| Butylene | - | - | 3 | 3 | - | 3 | 2 | 3 | - | 1 | - | - | 1 |
| Butyraldehyde | 3 | 3 | 2 | 1 | 2 | - | 3 | - | - | 3 | 1 | 1 | 1 |
| Butyric acid | 3 | 3 | - | 2 | - | - | 3 | 2 | - | 2 | 1 | 1 | 1 |
| Butyric anhydride | - | - | - | - | - | - | - | - | 2 | - | 1 | - | 1 |
| Cadmium acetate | 3 | 3 | 2 | 2 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Calcium acetate | 3 | 3 | 2 | 1 | 2 | 2 | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Calcium aluminate | 1 | 1 | 1 | 1 | - | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Calcium Bichromate | - | - | 2 | 1 | 2 | - | - | 1 | 1 | - | 1 | - | 1 |
| Calcium bisulphite | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Calcium carbonate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Calcium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Calcium hydroxide | 2 | 1 | 1 | 1 | 1 | - | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Calcium hypochlorite | 3 | 3 | 2 | 1 | 2 | - | 3 | 1 | - | - | 1 | 1 | 1 |
| Calcium nitrate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Calcium sulfide | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Calcium sulphate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Caprylic acid | 3 | 3 | - | 2 | - | - | - | 2 | - | - | 1 | 1 | 1 |
| Carbamide | - | - | - | 1 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Carbitol | - | - | 2 | 1 | 2 | 2 | - | 1 | - | - | 1 | 1 | 1 |
| Carbolic acid phenol | - | - | - | 2 | 2 | - | - | 1 | - | 1 | 1 | 1 | 1 |
| Carbon dioxide | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Carbon disulfide | 3 | 3 | 3 | 3 | - | - | - | - | - | 1 | 2 | 2 | 2 |
| Carbon tetrachloride | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | 1 | 1 | 2 | 1 |
| Carbon tetrafluoride | - | - | - | - | 2 | - | - | - | - | - | 1 | 1 | 1 |
| Carbonic acid | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Castor oil | 2 | - | - | - | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Caustic potash | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | - | - | 1 | 1 | 1 |
| Caustic soda | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | - | - | 1 | 1 | 1 |
| Cellosolve | - | - | 2 | 1 | 1 | - | 2 | - | - | - | 1 | 1 | 1 |
| Cellosolve acetate | 3 | 3 | - | 2 | 2 | - | - | - | - | - | 1 | 1 | 1 |
| Chlorinated solvents | 3 | 3 | 3 | 3 | - | 3 | 3 | - | - | 1 | 1 | 1 | 1 |
| Chlorine (dry) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1/2 |
| Chlorine (wet) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 |
| Chlorine trifluoride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 |
| Chloroacetic acid | 3 | 3 | 2 | 1 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Chloroacetone | 3 | 3 | 2 | 1 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Chlorobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 1 | 1 | 1 | 1 |
| Chlorobenzol | 3 | 3 | 3 | - | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Chlorobromomethane | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Chlorobutane | 3 | 3 | 3 | - | 2 | - | - | - | - | 1 | 2 | 2 | 1 |
| Chloroform | 3 | 3 | - | - | - | - | - | - | - | 1 | 2 | 2 | 1 |
| Chloropentane | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | 1 | 1 | 1 | 1 |
| Chlorosulfonic acid | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 1/2 |
| Chlorotoluene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 1/2 |
| Chrome plating solutio | 3 | 3 | - | 2 | - | - | - | - | - | 1 | 1 | 2 | 1 |
| Chromic acid | 3 | 3 | - | 2 | - | 3 | 3 | 2 | - | 1 | 1 | 1 | 1 |
| Chromosulfuric acid | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 2 | 3 | 1 |
| Citric acid | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Coal oil | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 1 | 1 | 1 | 1 |
| Coal tar | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 1 | 1 | 1 | 1 |
| Coconut oil | 3 | 3 | 3 | 3 | 2 | 3 | 1 | - | - | - | 1 | 1 | 1 |
| Coke oven gas | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | - | 1 | 1 | 1 | 1 |
| Copper chloride | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Copper cyanide | 2 | 2 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Copper hydrate | - | - | - | 1 | 1 | - | - | - | 2 | - | 1 | 1 | 1 |
| Copper hydroxide | - | - | 2 | 1 | 1 | - | - | 1 | 2 | - | 1 | 1 | 1 |
| Copper nitrate | 1 | 2 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Copper sulphate | 1 | 2 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Corn oil | 3 | 3 | 3 | 3 | 1 | 2 | 1 | - | - | 1 | 1 | 1 | 1 |
| Cottonseed oil | 3 | 3 | 3 | 3 | 3 | - | - | - | - | 1 | 1 | 1 | 1 |
| Creosote | 3 | 3 | 3 | 3 | 3 | - | 2 | - | - | 1 | 1 | 1 | 1 |
| Cresols | 3 | 3 | 3 | 3 | 3 | 3 | - | 2 | - | 1 | 1 | 1 | 1 |
| Cresylic acid | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | 1 | 1 | 1 | 1 |
| Crotonaldehyde | 3 | 3 | 2 | 1 | 2 | 3 | - | 1 | - | 3 | 1 | 1 | 1 |
| Crude oil | 3 | 3 | 3 | 3 | 3 | 3 | 1 | - | - | 1 | 1 | 1 | 1 |
| Cumene | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 | 1 |
| Cupric carbonate | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Cupric nitrate | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Cupric sulphate | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Cutting oil | 3 | 3 | 3 | 3 | - | 2 | 1 | - | - | 1 | 1 | 1 | 1 |
| Cycloexane | 3 | 3 | 3 | 3 | - | - | 1 | 1 | - | - | 1 | 1 | 1 |
| Cycloexanol | 3 | 3 | - | 2 | - | - | - | 1 | - | 1 | 1 | 1 | 1 |
| Cycloexanone | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Cyclopentane | 3 | 3 | 3 | 3 | 3 | 3 | - | 3 | 3 | 1 | 1 | 1 | 1 |
| Cyclopentanol | 3 | 3 | 2 | 1 | - | - | - | 1 | - | 2 | 1 | 1 | 1 |
| Cyclopentanone | 3 | 3 | - | 2 | - | - | - | 2 | - | 3 | 1 | 1 | 1 |
| Decahydronaphtalene | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Decalin | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Decanol | - | - | 2 | 1 | 2 | - | 1 | 1 | - | 2 | 1 | 1 | 1 |
| Decyl alcohol | 1 | 1 | 1 | 1 | 1 | - | - | 1 | - | - | 1 | 1 | 1 |
| Decyl aldehyde | - | - | 2 | 1 | 1 | - | - | - | - | 2 | 1 | 1 | 1 |
| Decyl butyl phthalate | 3 | 3 | - | 1 | 1 | - | 2 | - | - | 2 | 1 | 1 | 1 |
| Decyl carbinol | - | - | - | 2 | - | - | - | 1 | - | - | 1 | - | 1 |
| Denatured alcohol | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 2 | 1 | 1 | 1 |
| Detergents (water) | 2 | 2 | 1 | 1 | 1 | 2 | 1 | - | - | 1 | 1 | 1 | 1 |
| Developer sol. (photo) | 2 | 2 | - | - | 2 | 1 | 1 | - | 1 | - | 1 | 1 | 1 |
| Diacetone alcohol | 2 | 2 | - | 1 | 1 | - | - | 1 | 2 | 2 | 1 | 1 | 1 |
| Diamyl naphtalene | 3 | 3 | - | - | 2 | - | - | - | - | 2 | 1 | 1 | 1 |
| Diamyl Phenol | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | 1 | 1 | 1 | 1 |
| Diamylamine | 2 | 3 | 2 | 1 | 2 | - | - | 1 | - | - | 1 | 1 | 1 |
| Diamylene | 3 | 3 | 3 | - | 3 | 3 | - | - | - | 1 | 1 | 1 | 1 |
| Dibenzyl ether | 3 | 3 | 3 | 2 | 2 | - | - | - | - | - | 1 | - | 1 |
| Dibromobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 1 | 1 | 1 | 1 |
| Dibromoethane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 1 | 1 | 1 |
| Dibutyl amine | 3 | 3 | - | 2 | 3 | 3 | - | 1 | 3 | - | - | - | 1 |
| Dibutyl ether | 3 | 3 | - | 2 | 2 | - | - | 1 | - | - | 1 | 1 | 1 |
| Dibutyl Phthalate | 3 | 3 | - | 2 | 2 | - | 3 | - | 3 | - | 1 | 1 | 1 |
| Dibutyl sebacate | 3 | 3 | - | 1 | 2 | - | - | 1 | 3 | - | 1 | 1 | 1 |
| Dicalcium phosphate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dichloroacetic acid | 3 | 3 | - | 2 | - | 3 | 3 | - | 3 | 3 | 1 | 1 | 1 |
| Dichlorobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Dichlorobutane | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 3 | 1 | 1 | - | 1 |
| Dichlorodifluorometh. | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | - | - | 1 |
| Dichloroethane | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | 1 | 1 | 1 | 1 |
| Dichloroethyl ether | 3 | 3 | 3 | - | 3 | 3 | 3 | 2 | 3 | - | 1 | 1 | 1 |
| Dichloroethylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 |
| Dichlorohexane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 1 | 1 | 1 |
| Dichloromethane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 1 | 1 | 1 |
| Dichloropropane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 1 | - | 1 |
| Dichloropropene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 2 | 2 | 1 |
| Diclhoropentane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 1 | - | 1 |
| Diesel oil | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | - | 1 | 1 | 1 | 1 |
| Diethanolamine | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Diethyl carbinol | - | - | 1 | 1 | 1 | - | - | 1 | - | - | 1 | 1 | 1 |
| Diethyl ether | 3 | 3 | - | 2 | - | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Diethyl ketone | 3 | 3 | 2 | 1 | 2 | 3 | - | - | - | 3 | 1 | 1 | 1 |
| Diethyl oxalate | 1 | 1 | 1 | 1 | 1 | - | - | 1 | - | - | 1 | 1 | 1 |
| Diethyl phthalate | 3 | 3 | - | 1 | 2 | 3 | 2 | 2 | - | - | 1 | 1 | 1 |
| Diethyl sebacate | 3 | 3 | - | 1 | 2 | 3 | - | 2 | - | - | 1 | 1 | 1 |
| Diethyl sul fate | - | - | - | 2 | - | - | - | 1 | - | - | 1 | - | 1 |
| Diethylamine | 2 | 2 | 2 | 1 | 2 | - | - | 1 | - | - | 1 | 1 | 1 |
| Diethylamine | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Diethylbenzene | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | 1 | 1 | 1 | 1 |
| Diethylene glicol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dihydroxidietylether | - | - | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Diisobutyl ketone | - | - | 2 | 1 | - | - | - | - | - | - | 1 | 1 | 1 |
| Diisodecyl phthalate | 3 | 3 | 2 | 1 | 1 | - | 3 | - | - | 3 | 1 | 1 | 1 |
| Diisooctyl adipate | 3 | 3 | 2 | 1 | 1 | - | 3 | - | - | 3 | 1 | 1 | 1 |
| Diisooctyl phthalate | 3 | 3 | 2 | 1 | 1 | - | 3 | - | - | 3 | 1 | 1 | 1 |
| Diisopropyl amine | 2 | 2 | - | 1 | 1 | - | - | 2 | 2 | - | 1 | 1 | 1 |
| Dimethyl amine | 2 | 2 | 2 | 1 | 1 | - | 2 | 2 | - | - | 1 | 1 | 1 |
| Dimethyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Dimethyl carbinol | 2 | 2 | 1 | 1 | 1 | - | 2 | 1 | 1 | 3 | 1 | 1 | 1 |
| Dimethyl ether | 3 | 3 | - | 2 | - | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Dimethyl formamide | - | - | - | 2 | 2 | - | - | 2 | - | - | 1 | 1 | 1 |
| Dimethyl ketone | 3 | 3 | - | 1 | - | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Dimethyl phenol | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | - | - | 1 |
| Dimethyl phthalate | 3 | 3 | - | 2 | 2 | - | - | 1 | - | 2 | 1 | 1 | 1 |
| Dimethyl sul fate | 3 | 3 | - | 3 | 3 | - | - | 1 | - | - | 1 | 1 | 1 |
| Dimethyl sulfoxyde | 3 | 3 | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Dinitrobenzene | 3 | 3 | - | 2 | 2 | - | - | - | - | 1 | 1 | 1 | 1 |
| Dioctyl adipate | 3 | 3 | - | 1 | 1 | - | 2 | - | - | 2 | 1 | 1 | 1 |
| Dioctyl phthalate | 3 | 3 | - | 1 | 1 | - | - | - | - | 2 | 1 | 1 | 1 |
| Dioxane | 3 | 3 | 2 | 2 | 2 | - | 3 | 2 | - | 3 | 1 | 1 | 1 |
| Dioxolane | 3 | 3 | 3 | 2 | 3 | - | - | 2 | - | 3 | 1 | 1 | 1 |
| Dipentene | 3 | 3 | - | - | - | - | - | 2 | - | 1 | - | - | 1 |
| Diphenyl phthalate | 3 | 3 | - | 1 | - | - | - | - | - | - | 1 | 1 | 1 |
| Dipropylamine | 2 | 2 | 2 | 1 | 1 | - | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Dipropylene glicol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Disodium phosphate | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Divinyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Dodecyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Dowper | 3 | 3 | 3 | 3 | 3 | - | 2 | - | - | 1 | 1 | 1 | 1 |
| Dowtherm A and E | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 1 | 1 | 1 | 1 |
| Dry cleaning fluids | - | - | - | - | - | - | 2 | - | - | 1 | - | - | 1 |
| Ethanol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Ethanol amine | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 3 | 3 | 1 | 1 | 1 |
| Ethyl acetate | 3 | 3 | - | 2 | 2 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Ethyl acetoacetate | 3 | 3 | - | 2 | 2 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Ethyl acetone | 3 | 3 | - | 1 | 2 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Ethyl acrylate | 3 | 3 | - | 2 | 2 | 3 | 3 | 2 | 3 | 3 | 2 | 1 | 1 |
| Ethyl Al dichloride | 3 | 3 | - | - | - | - | - | - | - | 2 | 1 | 1 | 1 |
| Ethyl aldehyde | - | - | 2 | 1 | 1 | - | - | - | - | 3 | 1 | 1 | 1 |
| Ethyl amine | - | - | 2 | 1 | 1 | 2 | - | 1 | - | - | 1 | 1 | 1 |
| Ethyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | 2/3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Ethyl bromide | 3 | 3 | 3 | 3 | 3 | 3 | 2/3 | - | - | 1 | 1 | 1 | 1 |
| Ethyl butyl acetate | 3 | 3 | 2 | 1/2 | 1/2 | - | - | 2 | - | 3 | 1 | 1 | 1 |
| Ethyl butyl alcohol | 1/2 | 1/2 | 1 | 1 | 1 | - | 1/2 | 1/2 | 1 | 2 | 1 | 1 | 1 |
| Ethyl butyl amine | 2 | 2 | 1/2 | 1 | 1 | - | 2 | 1 | 2 | 2 | 1 | 1 | 1 |
| Ethyl butyl ketone | 3 | 3 | 2 | 1/2 | 1/2 | - | - | - | 2 | 3 | 1 | 1 | 1 |
| Ethyl butyrate | 3 | 3 | - | 1/2 | - | - | - | - | - | 3 | 1 | 1 | 1 |
| Ethyl cellulose | 2 | 2 | 2 | 1/2 | 2 | 2 | - | 1/2 | 2 | 3 | 1 | 1 | 1 |
| Ethyl chloride | 3 | 3 | 3 | 2/3 | 2/3 | - | - | 2/3 | - | 1/2 | 1 | 1 | 1 |
| Ethyl dichloride | 3 | 3 | 3 | 3 | 3 | - | - | 2/3 | - | 2 | 1 | 1 | 1 |
| Ethyl ether | 3 | 3 | - | 2 | - | - | - | 1/2 | - | 3 | 1 | 1 | 1 |
| Ethyl formate | 3 | 3 | - | 2 | 2 | 2 | - | 1/2 | 3 | 3 | 1 | 1 | 1 |
| Ethyl iodide | 3 | 3 | - | - | - | - | - | 2/3 | - | 2 | 2 | 2 | 1 |
| Ethyl phthalate | - | - | - | 2/3 | - | - | - | 2 | - | - | 1 | 1 | 1 |
| Ethylbutyraldehyde | 3 | 3 | - | 1 | 1 | - | - | 1/2 | 3 | 3 | 1 | 1 | 1 |
| Ethylene chlorohydrine | 2/3 | 2/3 | - | 2 | 2 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 |
| Ethylene diamine | 2 | 2 | 1/2 | 1 | 1 | 1 | - | 2 | 2 | 3 | 1 | 1 | 1 |
| Ethylene dibromide | 3 | 3 | 3 | 2/3 | 3 | 3 | - | 2/3 | 3 | 1/2 | 2 | 2 | 1 |
| Ethylene dichloride | 3 | 3 | 3 | 3 | 3 | 3 | - | 3 | 3 | 1/2 | 2 | 2 | 1 |
| Ethylene glycol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ethylene oxide gas | - | - | 3 | 3 | 3 | - | - | - | - | 3 | 1 | 1 | 1 |
| Fatty acids | 3 | 3 | 3 | 3 | 3 | 2/3 | 2/3 | 2 | 3 | 1 | 1 | 1 | 1 |
| Ferric bromide | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Ferric chloride | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ferric nitrate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ferric sulfate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ferrous acetate | 3 | 3 | 2 | 1/2 | 1/2 | - | - | - | 3 | 3 | 1 | 1 | 1 |
| Ferrous chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ferrous hydroxide | 2/3 | 2/3 | 1/2 | 1 | 1 | - | - | - | 2 | 2 | 1 | 1 | 1 |
| Ferrous sulfate | 1 | 1 | 1 | 1 | 1 | 1 | 1/2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fluoboric acid | 2 | 2 | 1 | 1 | 1 | 2 | - | 1 | 1 | 2 | 1 | 1 | 1 |
| Fluorine gas | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1 | 1 | 1/2 |
| Fluorobenzene | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Fluosilicic acid | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Formaldehyde | 2 | 2 | - | 1 | 1 | 3 | 3 | 1 | 1 | 2 | 1 | 1 | 1 |
| Formalin | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Formic acid | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 2 | 3 | 1 | 1 | 1 |
| Freon 12 | 3 | 3 | 3 | 3 | 3 | 2 | - | 1 | 3 | 2 | 1 | 2 | 1 |
| Freon 22 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 1 | 2 | 1 |
| Freon SO2 | - | - | - | 1 | - | 2 | - | - | - | - | 1 | 1 | 1 |
| Fuel B (ASTM) | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 3 | 3 | 1 | 1 | 1 | 1 |
| Fuel C (ASTM) | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 1 | 1 | 1 | 1 |
| Fuel oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Furan | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | - | 1 | 1 | 1 |
| Furfural | 3 | 3 | 3 | - | 2 | 3 | 3 | 1 | - | 3 | 1 | 1 | 1 |
| Furfuryl alcohol | 3 | 3 | 3 | 2 | 2 | 3 | 3 | 1 | - | 2 | 1 | 1 | 1 |
| Gallic acid | - | - | 2 | 2 | 2 | 3 | 3 | 1 | 3 | 3 | 1 | 1 | 1 |
| Gas, coke | 3 | 3 | - | - | - | - | 2 | - | 1 | - | - | - | 1 |
| Gas, liquified petrol | 3 | 3 | 3 | 3 | 3 | 3 | 2 | - | - | - | 1 | 1 | 1 |
| Gasoline | 3 | 3 | 3 | 3 | 3 | - | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Gluconic acid | 3 | 3 | - | 2 | - | - | 3 | 1 | 2 | - | 1 | 1 | 1 |
| Glucose | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | 1 | - | 1 | 1 | 1 |
| Glycerine | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Glycil alcohol | - | - | - | 1 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Glycolic acid | - | - | - | 2 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Glycols | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Grease | 3 | 3 | 3 | 3 | 3 | 2 | 1 | - | - | 1 | 1 | 1 | 1 |
| Green sulphate liquor | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| Halon 1211 | - | - | - | - | - | 1 | 1 | - | - | - | - | 1 | 1 |
| Helium | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Heptanal | 3 | 3 | - | 1 | 1 | - | - | 2 | 3 | - | 1 | 1 | 1 |
| Heptane | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | - | 1 | 1 | 1 | 1 |
| Heptane carboxyl.acid | 3 | 3 | - | 2 | - | - | - | 1 | 2 | - | 1 | 1 | 1 |
| Hexaldehyde | 3 | 3 | 1 | 1 | 2 | 2 | - | - | 3 | 3 | 1 | 1 | 1 |
| Hexane | 3 | 3 | 3 | 3 | 3 | - | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Hexanol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Hexene | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 |
| Hexyl alcohol | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Hexyl methyl ketone | 3 | 3 | - | 2 | 2 | - | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Hexylamine | 2 | 2 | - | - | 1 | - | 2 | 2 | 3 | - | 1 | 1 | 1 |
| Hexylene glycol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Hydraulic oil | 3 | 3 | 3 | 3 | 3 | - | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| Hydrazine | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 3 | 1 | - | 1 | 1 | 1 |
| Hydrobromic acid | 3 | 1 | 1 | 1 | 1 | 3 | 3 | 1 | 1 | 3 | 1 | 1 | 1 |
| Hydrocl. ac.37%(cold) | 3 | 2 | 1 | 1 | 2 | - | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Hydrocl. ac.37%(hot) | 3 | 3 | 3 | 2 | 3 | - | - | 1 | 3 | 2 | 1 | 1 | 1 |
| Hydrocloric acid 15% | 3 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Hydrocyanic acid | 3 | 3 | - | - | 2 | 2 | - | 3 | 3 | - | 1 | 1 | 1 |
| Hydrofluoric acid cold | 3 | 3 | 3 | 2 | 1/2 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Hydrofluoric acid hot | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 3 | - | 1 | 1 | 1 |
| Hydrofluosilicic acid | 3 | 3 | 2 | 1 | 1/2 | 3 | - | 1 | 1 | - | 1 | 1 | 1 |
| Hydrogen dioxide 10% | 3 | 3 | - | 2 | 2 | - | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Hydrogen gas | 2 | 2 | - | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 |
| Hydrogen perox. >10% | 3 | 3 | - | 3 | 3 | - | - | 1 | 3 | 1 | 1 | 1 | 1 |
| Hydrogen perox. 10% | 3 | 3 | - | 2 | 2 | - | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Hydrogen sulfide | 3 | 3 | 2 | 1 | 2 | - | 3 | 2 | 3 | 3 | 1 | 1 | 1 |
| Iodine | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 1 | 3 | 1 | 1 | 1 |
| Iron acetate | 3 | 3 | 2 | 1 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Iron salts | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Isoamyl acetate | 3 | 3 | 2 | 1 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Isoamyl alcohol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Isoamyl bromide | 3 | 3 | 3 | 2 | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Isobutane | 3 | 3 | 3 | 3 | 3 | - | 1 | - | - | 1 | 1 | 1 | 1 |
| Isobutyl acetate | 3 | 3 | - | 2 | - | 3 | - | 3 | 3 | 3 | 1 | 1 | 1 |
| Isobutyl aldehyde | 3 | 3 | 2 | 1 | 1 | - | 3 | - | 2 | 3 | 1 | 1 | 1 |
| Isobutyl amine | 2 | 2 | 1 | 1 | 1 | - | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Isobutyl bromide | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | - | 1 |
| Isobutyl carbinol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Isobutyl cloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | - | 1 |
| Isobutyl ether | 3 | 3 | - | 2 | 2 | 3 | 3 | 2 | 3 | - | 1 | 1 | 1 |
| Isobutylene | 3 | 3 | 3 | - | 3 | 3 | 2 | - | 3 | 1 | 1 | 1 | 1 |
| Isooctane | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Isopentane | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Isopropanol amine | 2 | 2 | - | 1 | 1 | - | 2 | 1 | 3 | - | 1 | 1 | 1 |
| Isopropyl acetate | 3 | 3 | - | 2 | 2 | 3 | 3 | - | 3 | 3 | 1 | 1 | 1 |
| Isopropyl alcohol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Isopropyl amine | 2 | 2 | 1 | 1 | 1 | - | 2 | 1 | 3 | - | 1 | 1 | 1 |
| Isopropyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 3 | 1 | 1 | 1 | 1 |
| Isopropyl ether | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 3 | 3 | 1 | 1 | 1 |
| Isopropyl toluene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Jet fuels | 3 | 3 | 3 | 3 | 3 | 3 | 1 | - | 3 | 1 | 1 | 1 | 1 |
| Kerosene | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | 1 |
| Ketones | 3 | 3 | 1 | 1 | 1 | 3 | 3 | - | 3 | 3 | 1 | 1 | 1 |
| Lactic acid (cold) | 2 | 2 | - | 1 | 1 | 1 | 3 | - | 2 | 1 | 1 | 1 | 1 |
| Lactic acid (hot) | 3 | 3 | - | - | - | - | - | - | - | 3 | 2 | 2 | 1/2 |
| Laquers solvents | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 |
| Lard | 3 | 3 | - | 2 | 1/2 | 1 | 1 | 1 | 3 | 3 | 1 | 1 | 1 |
| Lauryl alcohol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Lauryl alcohol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Lavender oil | 3 | 3 | 3 | 3 | 3 | 3 | 2 | - | 3 | 1 | 1 | 1 | 1 |
| Lead acetate | 3 | 2 | 2 | 1 | 2 | 1 | 2 | 1 | 3 | 3 | 1 | 1 | 1 |
| Lead sulfate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Lime bleach | 2 | 2 | 1 | 1 | 1 | 2 | 1 | - | 2 | 1 | 1 | 1 | 1 |
| Lime sulfur | 3 | 3 | 1 | 1 | 1 | 1 | 3 | - | 1 | 1 | 1 | 1 | 1 |
| Linoleic acid | 3 | 3 | 3 | - | - | - | 2 | - | - | 2 | 1 | 1 | 1 |
| Linseed oil | 3 | 3 | - | 2 | 2 | - | 1 | 1 | - | 1 | 1 | 1 | 1 |
| Liquid Petroleum Gas | 3 | 3 | 3 | 3 | 3 | - | 1 | 2 | - | 1 | 1 | 1 | 1 |
| Lubricating oils | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 2 | - | 1 | 1 | 1 | 1 |
| Lye solutions | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | 2 | 1 | 1 | 1 |
| M.E.K. | 3 | 3 | 2 | 1 | 2 | - | - | 3 | 3 | 3 | 1 | 1 | 1 |
| Magnesium acetate | 3 | 3 | - | 2 | 2 | - | - | 1 | - | - | 1 | 1 | 1 |
| Magnesium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Magnesium hydrate | 2 | 2 | - | 1 | 1 | - | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Magnesium hydroxide | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 1 | 1 | 1 |
| Magnesium sulfate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Maleic acid | 3 | 3 | 3 | 2 | - | 3 | 3 | 3 | 3 | - | 1 | 1 | 1 |
| Maleic anhydride | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 |
| Malic acid | 3 | 2 | - | 2 | - | - | - | 2 | 2 | 1 | 1 | 1 | 1 |
| Manganese sulphate | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Manganese sulphite | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Mercury | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Mesityl oxide | 3 | 3 | 2 | 2 | - | - | - | 2 | - | - | 1 | 1 | 1 |
| Methallyl alcohol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 3 | 1 | 1 | 1 |
| Methanecarboxylic acd | 3 | 3 | 3 | - | - | 2 | - | 1 | - | - | 1 | 1 | 1 |
| Methanoic acid | 3 | 3 | - | 2 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Methanol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Methoxy ethanol | 3 | 3 | - | 2 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Methyl 1,2-pentanediol | 3 | 3 | - | - | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Methyl acetate | 3 | 3 | 2 | 1 | 2 | - | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Methyl acetone | 3 | 3 | 2 | 1 | 2 | - | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Methyl alcohol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Methyl allyl acetate | 3 | 3 | - | 2 | - | - | - | - | - | 3 | 1 | 1 | 1 |
| Methyl allyl alcohol | - | - | - | 2 | - | - | - | 1 | - | - | 1 | 1 | 1 |
| Methyl allyl chloride | 3 | 3 | - | 2 | - | - | - | 3 | - | 3 | 1 | 2 | 1 |
| Methyl amyl acetate | 3 | 3 | - | 2 | - | - | - | 3 | - | 3 | 1 | 2 | 1 |
| Methyl amyl carbinol | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 3 | 1 | 1 | 1 |
| Methyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 |
| Methyl bromide | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 |
| Methyl butane | 3 | 3 | 3 | 3 | 3 | - | 2 | 1 | - | - | 1 | - | 1 |
| Methyl butanol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Methyl butyl ketone | 3 | 3 | 2 | 1 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Methyl carbitol | 3 | 3 | - | 2 | - | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Methyl cellosolve | 3 | 3 | 2 | 1 | 2 | - | 3 | 1 | 3 | 3 | 1 | 1 | 1 |
| Methyl chloride | 3 | 3 | 3 | 3 | 3 | 3 | 2/3 | 3 | 3 | 1/2 | 1/2 | 1/2 | 1/2 |
| Methyl cyclohexane | 3 | 3 | 3 | 3 | 3 | 3 | 2/3 | 3 | 3 | 1/2 | 1/2 | 1/2 | 1 |
| Methyl ethyl ketone | 3 | 3 | 2 | 1 | 2 | - | - | 3 | 3 | 3 | 1 | 1 | 1 |
| Methyl hexanol | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Methyl hexanone | 3 | 3 | 2 | 1 | 1/2 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 |
| Methyl isobut carbinol | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Methyl isobutyl cheton | 3 | 3 | 3 | 2 | 2 | 3 | 3 | - | - | 3 | 1 | 1 | 1 |
| Methyl methacrylate | 3 | 3 | 3 | 3 | 3 | - | - | - | 3 | 3 | 1 | 1 | 1 |
| Methyl n amyl chetone | 3 | 3 | - | 1/2 | 1/2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Methyl propyl ether | 3 | 3 | - | 2 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Methyl salicylate | 3 | 3 | - | 1/2 | 1/2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Methyl ter butyl ether | 3 | 3 | - | 2 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Methylene bromide | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 2 | 2 | 1/2 |
| Methylene bromide | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1/2 | 1/2 | 1 |
| Methylene chloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1/2 | 1/2 | 1/2 |
| Methylene chloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 2 | 2 | 1/2 |
| Mineral spirits | 3 | 3 | 3 | - | - | 2 | 1 | - | - | - | 1 | 1 | 1 |
| Molten sulphur | 2 | 2 | 2 | 1/2 | 2 | - | 3 | 1 | 2 | - | - | - | 1 |
| Monobutyl ether | 3 | 3 | 3 | 2 | 2 | - | - | - | - | 3 | 1 | 1 | 1 |
| Monochloroacetic acid | 3 | 2 | - | 2 | - | - | 3 | 1 | 3 | 3 | 1 | 1 | 1 |
| Monochlorobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1/2 | 1/2 | 1 |
| Monoclhorodifluormet | 3 | 3 | 3 | - | 2 | 3 | - | - | - | - | 1/2 | 1/2 | 1 |
| Monoethanol amine | 2 | 1 | 1 | 1 | 1 | - | 2 | - | 2 | 3 | 1 | 1 | 1 |
| Monoethyl amine | - | - | 2 | 1/2 | 2 | - | - | 1 | 2 | - | 1 | 1 | 1 |
| MTBE (ter butyl metil Ether) | 3 | 3 | - | 2 | - | - | - | 3 | - | 3 | 1 | - | 1 |
| Muriatic acid | - | 1 | 2 | 2 | 2 | - | - | 1 | - | 1 | 1 | 1 | 1 |
| Naphta | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | - | 1 | 1 | 1 | 1 |
| Naphtalene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | 1 | 1 | 1 |
| Naphtenic acid | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 1 | 1 | 1 | 1 |
| Natural gas | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | - | 2 | 1 | 1 | 1 | 1 |
| Neohexane | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 2 | - | 1 | 1 | 1 | 1 |
| Nickel acetate | 2 | 2 | - | 1 | 2 | - | 2 | - | - | 3 | 1 | 1 | 1 |
| Nickel chloride | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nickel nitrate | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nickel sulphate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nitric acid ? fuming | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 3 | 2/3 | 3 | 3 | 1/2 |
| Nitric acid 10% | 3 | 3 | 2 | 1 | 1 | - | - | - | 1 | 1 | 1 | 1 | 1 |
| Nitric acid 20% | 3 | 3 | 3 | 1 | 2 | - | - | - | 2 | 1 | 1 | 1 | 1 |
| Nitric acid 30% | 3 | 3 | 3 | 2 | 2 | - | - | - | 3 | 1 | 1 | 1 | 1 |
| Nitric acid 40% | 3 | 3 | 3 | 2 | 3 | 3 | - | - | 3 | 1 | 1 | 1 | 1 |
| Nitric acid 40-60% | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 3 | 2 | 2 | 2 | 1 |
| Nitrobenzene | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 3 | 2 | 1 | 1 | 1 |
| Nitrocellulose | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Nitrogen gas | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nitromethane | 3 | 2 | 2 | 1 | 1 | - | - | - | 3 | - | 1 | 1 | 1 |
| Nitropropane | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Nitrous oxide gas | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Nonenes | 3 | 3 | 3 | 3 | 3 | - | 1/2 | - | - | 1 | 1 | 1 | 1 |
| Octadecanoic acid | 3 | 3 | 3 | 3 | 3 | - | 1/2 | 2 | - | - | 1 | 1 | 1 |
| Octane | 3 | 3 | 3 | 3 | 3 | - | 1 | - | - | 1 | 1 | 1 | 1 |
| Octanol | 2 | 2 | 2 | 1 | 2 | - | 2 | 1 | 2 | 2 | 1 | 1 | 1 |
| Octyl acetate | 3 | 3 | 2 | 2 | 2 | - | - | 3 | 3 | 3 | 1 | 1 | 1 |
| Octyl alcohol | 2 | 2 | 2 | 1 | 2 | - | - | 1 | - | 2 | 1 | 1 | 1 |
| Octyl aldehyde | 3 | 3 | - | 1 | 2 | - | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Octyl amine | 2 | 2 | 2 | 1 | 2 | - | - | 2 | 3 | 3 | 1 | 1 | 1 |
| Octyl carbinol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Octylene glycol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Oil ? petroleum | 3 | 3 | 3 | 3 | 3 | 2/3 | 1 | - | 2/3 | 1 | 1 | 1 | 1 |
| Oleic acid | 3 | 3 | - | 2 | - | - | 2 | 1 | 3 | 2 | 1 | 1 | 1 |
| Oleum | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 1/2 |
| Olive oil | 3 | 3 | - | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 1 |
| Orthodiclorobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1/2 | 1/2 | 1 |
| Orthodiclorobenzol | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1/2 | 1/2 | 1 |
| Orthoxylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Oxalic acid | 3 | 3 | 1 | 1 | 1 | 3 | 3 | 1 | 3 | 3 | 1 | 1 | 1 |
| Oxygen | 2 | 2 | 1 | 1 | 1 | - | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ozone | 3 | 3 | 1 | 1 | 1/2 | 2 | 3 | 1 | 2 | 3 | 1 | 1 | 1 |
| Paint | 3 | 3 | 2 | 2 | - | - | 2 | - | - | 2 | 1 | 1 | 1 |
| Palmitic acid | 3 | 3 | - | 2 | 2 | - | 1 | 1 | 3 | 3 | 1 | 1 | 1 |
| Papermakers alum | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Paraffin | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | 1 |
| Paraldehyde | 3 | 3 | - | 1/2 | 1/2 | 3 | 3 | - | - | 3 | 1 | 1 | 1 |
| Paraxylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1/2 | 1/2 | 1 |
| Pelargonic acid | 3 | 3 | - | 1 | 1 | - | 2 | 1 | 3 | - | 1 | 1 | 1 |
| Pentachloroethene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Pentadione | 3 | 3 | - | 2 | - | - | - | 2 | 3 | 3 | 1 | 1 | 1 |
| Pentane | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | 1 |
| Pentanone | 3 | 3 | - | 2 | - | - | - | - | 3 | 3 | 1 | 1 | 1 |
| Pentasol | 1 | 1 | - | 1 | 1 | - | - | - | 1 | 1 | 1 | 1 | 1 |
| Perchloric acid | 3 | 3 | - | 2 | - | 3 | 3 | - | 2 | 1 | 1 | 1 | 1 |
| Perchloroethylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Petroleum crude | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 3 | 1 | 1 | 1 | 1 |
| Petroleum ether | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1/2 | 3 | 1 | 1 | 1 | 1 |
| Petroleum oils | 3 | 3 | 3 | 3 | 3 | - | 1 | - | 3 | 1 | 1 | 1 | 1 |
| Phenol | 3 | 3 | 3 | - | 2 | - | 3 | 1 | - | 1 | 1 | 1 | 1 |
| Phenolsulphonic acid | 3 | 3 | 3 | 2/3 | 2/3 | - | - | 1/2 | 3 | 3 | 1 | 1 | 1 |
| Phenyl chloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Phenylamine | - | - | - | 2/3 | - | - | - | 1/2 | - | - | 1/2 | 1/2 | 1 |
| Phenylhydrazine | 2 | 1/2 | 2 | 2 | 2 | 3 | 3 | - | 3 | 1 | 1/2 | 1/2 | 1 |
| Phosphoric acid 10% | 1 | 1 | 1 | 1 | 1 | 2 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Phosphoric acid 10-85% | 3 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | 1 |
| Picric acid (alcoholic) | 2 | 2 | 2 | - | 1/2 | - | - | 2 | 1 | 3 | 1 | 1 | 1 |
| Pine oil | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 3 | 1 | 1 | 1 | 1 |
| Pinene | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 3 | 1 | 1 | 1 | 1 |
| Polyethylene glycol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Polyol ester | 3 | 3 | 3 | 3 | - | - | 1/2 | - | - | 1/2 | 1 | 1 | 1 |
| Polypropylene glycol | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Potassium acetate | 3 | 3 | 1 | 1 | 2 | 2 | 2 | 1 | 3 | 3 | 1 | 1 | 1 |
| Potassium bisulfate | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | - | 1 | 1 | 1 |
| Potassium busulfite | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Potassium carbonate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Potassium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Potassium chromate | - | - | - | 1 | 1 | - | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Potassium cyanide | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Potassium dichromate | - | - | - | 1 | 1 | - | - | 1 | 2 | 1 | 1 | 1 | 1 |
| Potassium hydroxide | 2 | 2 | 1 | 1 | 1 | 3 | 3 | 1 | 2 | 3 | 1 | 1 | 1 |
| Potassium nitrate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Potassium pmanganate | - | - | - | - | - | - | - | 2 | 1 | - | 1 | 1 | 1 |
| Potassium silicate | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Propane | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| Propanediol | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Propanol | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 2 | 1 | 1 | 1 |
| Propanolamine | - | - | - | - | - | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Propanone | - | - | - | 1 | 2 | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Propenenitrile | - | - | - | - | - | - | - | 1 | - | - | - | - | 1 |
| Propionic acid | - | - | 2 | 1 | 2 | - | - | - | - | - | 1 | 1 | 1 |
| Propyl acetate | 3 | 3 | 2 | 1/2 | 2 | - | - | 1/2 | - | 3 | 1 | 1 | 1 |
| Propyl alcohol | 1 | 1 | 1 | 1 | 1 | - | 2 | 1 | 1 | - | 1 | 1 | 1 |
| Propyl aldehyde | 3 | 3 | 2 | 1 | 2 | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Propyl benzene | 3 | 3 | 3 | 3 | 3 | - | 2/3 | - | - | 1 | 1 | 1 | 1 |
| Propyl chloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 2 | 1 | 1/2 | 1 |
| Propyl ether | - | - | - | 2 | - | - | - | 1 | - | - | 1 | 1/2 | 1 |
| Propylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | - | 1 | 1 | - | 1 |
| Propylene dichloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 2 | 1 | 1/2 | 1 |
| Propylene glycol | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Red oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| Resorcinol | - | - | - | - | - | - | - | - | - | 2 | 1 | 1/2 | 1 |
| Richfield A, 100% | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Richfield D, 33% | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 |
| Sea water | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Sewage | 2 | 2 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Silicate esters | - | - | - | - | - | 1 | 2 | 1 | - | - | 1 | 1 | 1 |
| Silicate of soda | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Silicone grease | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Silicone oil | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Silver nitrate | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Skydrol 500B | - | - | - | 1 | 2 | 3 | - | 2 | 3 | 3 | 1 | 1 | 1 |
| Soap solutions | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Soda ash | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Soda lime | 2 | 2 | 2 | 1 | 1 | - | - | 1 | 2 | 2 | 1 | 1 | 1 |
| Soda, caustic | 2 | 2 | 2 | 1 | 1 | - | - | 1 | 2 | 2 | 1 | 1 | 1 |
| Sodium acetate | 3 | 3 | 3 | 1 | 2 | - | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Sodium aluminate | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | - | 1 | 1 | 1 |
| Sodium bicarbonate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Sodium bisulphate | 2 | 2 | 2 | 1 | 1 | - | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Sodium bisulphite | 2 | 2 | 2 | 1 | 1 | - | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Sodium borate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Sodium chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Sodium cyanide | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 1 | 1 | - | 1 | 1 | 1 |
| Sodium dichromate | 3 | 3 | 3 | 1 | 1 | - | - | 1 | 2 | 3 | 1 | 1 | 1 |
| Sodium Hypochlorite | 3 | 3 | 3 | 2 | 2 | - | - | 1 | 2 | 2 | 1 | 1 | 1 |
| Sodium metaphosphate | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 2 | - | 1 | 1 | 1 |
| Sodium nitrate | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Sodium perborate | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | - | 1 | 1 | 1 |
| Sodium peroxide | 2 | 2 | 2 | 1 | 1 | - | - | - | 2 | - | 1 | 1 | 1 |
| Sodium Silicate | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | - | 1 | 1 | 1 |
| Sodium Thiosulfate | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Soybean oil | 3 | 3 | 3 | 2 | 1 | 2 | 1 | - | 2 | 1 | 1 | 1 | 1 |
| Stannic chloride | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Steam, max 176°C | 3 | 3 | 1 | 1 | 1/2 | 3 | 3 | - | - | 3 | 3 | 3 | 1 |
| Stearic acid | 3 | 3 | 2 | 1 | 2 | 2 | 2 | 1 | 3 | 3 | 1 | 1 | 1 |
| Stoddarts solvent | 3 | 3 | 3 | 3 | 3 | - | 1 | 1 | 3 | 1 | 1 | 1 | 1 |
| Styrene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 |
| Sulphamic acid | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 3 | 1 | 1 | 1 |
| Sulphonic acid | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | - | 1 | 1 | 1 |
| Sulphur | 3 | 3 | 3 | 2/3 | 2/3 | - | - | 2/3 | 2/3 | 2 | 1 | 1 | 1 |
| Sulphur dioxide | 3 | 3 | 2 | 2 | - | - | - | - | 2 | - | 1 | 1 | 1 |
| Sulphur trioxide | 3 | 3 | 3 | 3 | - | - | - | - | - | - | 3 | 3 | 1 |
| Sulphuric acid 25% | 3 | 2 | 1 | 1 | 1 | 2 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Sulphuric acid 50% | 3 | 3 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Sulphuric acid 75% | 3 | 3 | 2 | 1 | 2 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Sulphuric acid 96% | 3 | 3 | 3 | 2 | 3 | - | - | 2 | 2 | - | 1/2 | 1 | 1 |
| Sulphuric acid 98% | 3 | 3 | 3 | 3 | 3 | - | - | 3 | 3 | - | 2 | 2 | 1 |
| Sulphuric acid –fuming | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 |
| Sulphurous acid 10% | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Sulphurous acid 85% | 3 | 3 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Sulphydric acid (H2S) | 3 | 3 | 2 | 1 | 1 | - | 3 | 1 | 1 | - | 1 | 1 | 1 |
| Tall oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | - | 3 | 1 | 1 | 1 | 1 |
| Tallow | 3 | 3 | 3 | 3 | 3 | - | 1 | - | 3 | - | 1 | 1 | 1 |
| Tannic acid | 2 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | - | 1 | 1 | 1 |
| Tar | 3 | 3 | 3 | 3 | 3 | 2/3 | 2 | - | - | 1 | 3 | 2 | 1 |
| Tartaric acid | 3 | 3 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | - | 1 | 1 | 1 |
| Tertiary butyl alcohol | 2 | 2 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Tertiary butyl mercapt | 3 | 3 | 3 | 3 | 3 | - | - | - | - | 1 | - | - | 1 |
| Tetrachlorobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 2 | 1/2 | 1 |
| Tetrachloroetane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 1 |
| Tetrachloroethylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1/2 | 1 | 1 |
| Tetrachloromethane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Tetrachloronaphtalene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1 | 1 | 1 |
| Tetrahydrofuran | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | 1/2 | 1 | 1 |
| Tin chloride | 2 | 2 | 2 | 1 | 1 | - | 2 | - | 1 | - | 1 | 1 | 1 |
| Toluene | 3 | 3 | 3 | 3 | 3 | - | 3 | - | - | 1 | 1/2 | 1/2 | 1 |
| Toluidine | 3 | 3 | 3 | 3 | 3 | - | 3 | - | - | 2 | 2 | 1 | 1 |
| Toluol | 3 | 3 | 3 | 3 | 3 | - | 3 | - | 3 | 1 | 1 | 1 | 1 |
| Transformer oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | - | 1 | 1 | 1 | 1 |
| Tributyl amine | 2 | 2 | - | 2 | 2 | 2 | 2 | 1 | 3 | - | 1 | 1 | 1 |
| Trichloroacetic acid | 3 | 3 | 2 | 1 | 2 | - | - | - | 3 | 3 | 1 | 1 | 1 |
| Trichlorobenzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 |
| Trichloroethane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 1/2 | 1/2 | 1 |
| Trichloroethylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1/2 | 2 | 2 | 1 |
| Trichloropropane | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 |
| Tricresyl phosphate | 3 | 3 | - | 2 | 2 | - | - | 1/2 | 3 | 3 | 1 | 1 | 1 |
| Triethanolamine | 3 | 2 | 2 | 1/2 | 1/2 | 2 | 3 | 1 | 2 | 3 | 1 | 1 | 1 |
| Triethylamine | 3 | 3 | 2 | 2 | 2 | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Triethylene glycol | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
| Trimethylamine | 3 | 3 | - | - | - | - | - | 1 | - | 3 | 1 | 1 | 1 |
| Trinitrotoluene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 2 | 2 | 1/2 | 1 |
| Trioctyl phosphate | 3 | 3 | - | 2 | 2 | - | - | 1 | - | - | 1 | 1 | 1 |
| Tung oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1/2 | 2 | 1 | 1 | 1 | 1 |
| Turpentine | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | - | 1 | 1 | 1 | 1 |
| Urea | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | - | 1 | 1 | 1 |
| Vegetable oils | 3 | 3 | 3 | 2/3 | 1 | - | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| Vinegar | 2 | 2 | 1 | 1 | 1 | - | 3 | 2 | 2 | 3 | 1 | 1 | 1 |
| Vinyl acetate | 3 | 3 | - | 2 | 2 | - | - | 1 | 3 | 3 | 1 | 1 | 1 |
| Vinyl benzene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1/2 | 1 | 1 |
| Vinyl chloride | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Vinyl cyanide | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | - | 1/2 | 1/2 | 1 |
| Vinyl ether | 3 | 3 | 3 | - | 2 | - | - | - | - | - | 1 | 1 | 1 |
| Vinyl Trichloride | 3 | 3 | 3 | 3 | 3 | - | - | 2 | - | - | 1/2 | 1/2 | 1 |
| Water | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| White oil | 3 | 3 | 3 | 3 | 3 | 1/2 | 1 | - | - | - | 1 | 1 | 1 |
| Wines | 1 | 1 | - | - | 1 | - | 1 | - | - | - | 1 | 1 | 1 |
| Wood oil | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1/2 | - | 1 | 1 | 1 | 1 |
| Xylene | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | 1 | 2 | 2 | 1 |
| Zinc acetate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Zinc chloride | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Zinc chromate | - | - | - | 1 | - | - | - | - | - | - | 1 | 1 | 1 |
| Zinc sulphate | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |