Rubber Chemical Resistance Chart
Welcome to our Rubber Chemical Resistance Chart
Here is the rubber compatibility chart that rates all popular rubber materials that comes into contact with various chemicals. Use this rubber chemical resistance chart to make sure that the elastomer or O-ring seal you choose will be compatible with the particular environment. The chemical compatibility of rubber is extremely important as the rubber can degrade rapidly if the rubber material is not compatible with the environment or media that it comes into contact with.
LEGEND: 1 = Satisfactory, 2 = Fair, 3 = Doubtful, 4 = Unsatisfactory, X = Insufficient Data
| Nitrile | EPDM | Neoprene | SBR | Silicone | Butyl | Polyacrylate | Hypalon | Viton | Polyurethane | Fluorosilicone | Aflas | Kalrez | |
| Lehigh X1169 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Lehigh X1170 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Light Grease | 1 | 4 | 4 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Ligroin (Petroleum Ether or Benzene) | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 3 | 1 | 2 | 1 | X | 1 |
| Lime Bleach | 1 | 1 | 1 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Lime Sulfur | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Lindol, Hydraulic Fluid (Phosphate ester type) | 4 | 1 | 4 | 4 | 3 | 1 | 4 | 4 | 2 | 4 | 3 | X | 1 |
| Linoleic Acid | 2 | 4 | 2 | 4 | 2 | 4 | X | 2 | 2 | X | X | X | 1 |
| Linseed Oil | 1 | 3 | 3 | 4 | 1 | 3 | 1 | 2 | 1 | 2 | 1 | X | 1 |
| Liquid Oxygen (LOX) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | X | 2 |
| Liquid Petroleum Gas (LPG) | 1 | 4 | 2 | 4 | 3 | 4 | 3 | 4 | 1 | 1 | 3 | X | 1 |
| Liquimoly | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 4 | 1 | 2 | 1 | X | 1 |
| Lithium Bromide (Brine) | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Carbonate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Chloride | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Citrate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Hydroxide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Hypochlorite | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Nitrate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Nitrite | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Perchlorate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithium Salicylate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lithopone | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Lubricating Oils (Crude & Refined) | 2 | 4 | 3 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Lubricating Oils (Synthetic base) | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Lubricating Oils, Di-ester | 2 | 4 | 3 | 4 | 4 | 4 | 2 | X | 1 | X | 2 | X | 1 |
| Lubricating Oils, petroleum base | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 4 | 1 | 2 | 1 | X | 1 |
| Lubricating Oils, SAE 10, 20, 30, 40, 50 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 4 | 1 | 2 | 1 | X | 1 |
| Lye Solutions | 2 | 1 | 2 | 2 | 2 | 1 | 4 | 1 | 2 | 4 | 2 | X | 1 |
| Magnesium Chloride | 1 | 1 | 1 | 1 | 1 | 1 | X | 1 | 1 | 1 | 1 | X | 1 |
| Magnesium Hydroxide | 2 | 1 | 2 | 2 | X | 1 | 4 | 1 | 1 | 4 | X | X | 1 |
| Magnesium Salts | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | X | 1 |
| Magnesium Sulfite and Sulfate | 1 | 1 | 1 | 2 | 1 | 1 | 4 | 1 | 1 | X | 1 | X | 1 |
| Magnesium Trisilicate | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Malathion | 2 | 4 | X | 4 | 4 | 4 | X | X | 1 | X | 2 | X | 1 |
| Maleic Acid | 4 | 4 | 4 | 4 | X | 4 | 4 | 4 | 1 | X | X | X | 1 |
| Maleic Anhydride | 4 | 2 | 4 | 4 | X | 2 | 4 | 4 | 4 | X | X | X | 1 |
| Maleic Hydrazide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Malic Acid | 1 | 2 | 2 | 2 | 2 | 4 | 4 | 2 | 1 | X | 1 | X | 1 |
| Mandelic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Acetate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Carbonate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Chloride | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Dioxide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Gluconate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Hypophosphite | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Linoleate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Naphthenate | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Manganese Phosphate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganese Sulfate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganous Chloride | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganous Phosphate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Manganous Sulfate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mannitol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| MCS 312 | 4 | 4 | 4 | 4 | 1 | 4 | 4 | X | 1 | X | 1 | X | 1 |
| MCS 352 | 4 | 1 | 4 | 4 | 3 | 2 | 4 | 4 | 4 | 4 | 3 | X | 1 |
| MCS 463 | 4 | 1 | 4 | 4 | 3 | 2 | 4 | 4 | 4 | 4 | 3 | X | 1 |
| MDI (Methylene di-p-phenylene isocyanate) | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercaptan | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Mercaptobenzothiazole (MBT) | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Mercuric Acetate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercuric Chloride | 1 | 1 | 1 | 1 | X | 1 | X | 1 | 1 | X | X | X | 1 |
| Mercuric Cyanide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercuric Iodide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercuric Nitrate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercuric Sulfate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercuric Sulfite | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercurous Nitrate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercury | 1 | 1 | 1 | 1 | X | 1 | X | 1 | 1 | X | X | X | 1 |
| Mercury Chloride | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercury Fulminate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercury Salts | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mercury Vapors | 1 | 1 | 1 | 1 | X | 1 | X | 1 | 1 | X | X | X | 1 |
| Mesityl Oxide (Ketone) | 4 | 2 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Meta-Cresol | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Metaldehyde | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Meta-Nitroaniline | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Meta-Toluidine | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methacrylic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methallyl Chloride | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methane | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 3 | 3 | X | 1 |
| Methanol | 4 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 4 | 4 | 1 | X | 1 |
| Methoxychlor | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Methoxyethanol (DGMMA) | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Abietate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Acetate | 4 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Acetoacetate | 4 | 2 | 4 | X | 2 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Acetophenone | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Acrylate | 4 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Alcohol | 4 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 4 | 4 | 1 | X | 1 |
| Methyl Amylketone | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Anthranilate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Benzoate | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 1 | X | 1 |
| Methyl Bromide | 2 | 4 | 4 | 4 | X | 4 | 3 | 4 | 1 | X | 1 | X | 1 |
| Methyl Butyl Ketone | 4 | 1 | 4 | 4 | 4 | 1 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Butyrate Cellosolve | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Butyrate Chloride | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Carbonate | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Methyl Cellosolve | 3 | 2 | 3 | 4 | 4 | 2 | 4 | 2 | 4 | 4 | 4 | X | 1 |
| Methyl Cellulose | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 2 | 4 | 2 | 4 | X | 1 |
| Methyl Chloride | 4 | 3 | 4 | 4 | 4 | 3 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Methyl Chloroacetate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Chloroform | 4 | 4 | 4 | X | X | X | X | X | 1 | X | X | 4 | 1 |
| Methyl Chloroformate | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Methyl Chlorosilanes | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Methyl Cyanide (Acetonitrile) | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Cyclohexanone | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Methyl Dichloride | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Ether | 1 | 4 | 3 | 4 | 1 | 4 | 4 | 4 | 1 | X | 1 | X | 1 |
| Methyl Ethyl Ketone (MEK) | 4 | 1 | 4 | 4 | 4 | 1 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Ethyl Ketone Peroxide | 4 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Ethyl Oleate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Formate | 4 | 2 | 2 | 4 | X | 2 | X | 2 | X | X | X | X | 1 |
| Methyl Hexyl Ketone (2-Octanone) | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Iodide | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Methyl Isobutyl Ketone (MIBK) | 4 | 3 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Isocyanate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Isopropyl Ketone | 4 | 2 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Methyl Isovalerate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Lactate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methyl Mercaptan | X | 1 | X | X | X | 1 | X | X | X | X | X | X | 1 |
| Methyl Methacrylate | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | X | 4 | X | 1 |
| Methyl Oleate | 4 | 2 | 4 | 4 | X | 2 | X | 4 | 1 | X | 2 | X | 1 |
| Methyl Pentadiene | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Phenylacetate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl Salicylate | 4 | 2 | 4 | 3 | X | 2 | X | 4 | X | X | X | X | 1 |
| Methyl Tertiary Butyl Ether (MTBE) | 3 | 3 | 3 | X | X | X | X | X | 3 | X | X | 2 | 1 |
| Methyl Valerate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methyl-2-Pyrrolidone or n-Methyl-2-Pyrrolidone | X | 2 | X | X | X | X | X | X | X | X | X | X | 1 |
| Methylacrylic Acid | 4 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 3 | 4 | 4 | X | 1 |
| Methylal | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Methylamine | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methylamyl Acetate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methylcyclopentane | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Methylene Bromide | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methylene Chloride | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | X | 1 |
| Methylene Iodide | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methylglycerol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Methylisobutyl Carbinol | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Methylpyrrolidine | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methylpyrrolidone | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Methylsulfuric Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| MIL-A-6091 | 2 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 4 | 1 | X | 1 |
| MIL-C-4339 | 1 | 4 | 4 | 4 | 3 | 4 | 1 | 4 | 1 | 1 | 1 | X | 1 |
| MIL-C-7024 | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 4 | 1 | 1 | 1 | X | 1 |
| MIL-C-8188 | 2 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 2 | 4 | 2 | X | 1 |
| MIL-E-9500 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 4 | 1 | X | 1 |
| MIL-F-16884 | 1 | 4 | 3 | 4 | 4 | 4 | 1 | 3 | 1 | 3 | 1 | X | 1 |
| MIL-F-17111 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 3 | 2 | X | 1 |
| MIL-F-25558 (RJ-1) | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-F-25656 | 1 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 2 | 2 | X | 1 |
| MIL-F-5566 | 2 | 1 | 2 | 2 | 1 | 1 | 4 | 1 | 1 | 2 | 1 | X | 1 |
| MIL-F-81912 (JP-9) | 3 | 4 | 4 | 4 | 4 | 4 | 4 | X | 1 | 3 | 2 | X | 1 |
| MIL-F-82522 (RJ-4) | 2 | 4 | 4 | 4 | 4 | 4 | 1 | X | 1 | 1 | 1 | X | 1 |
| MIL-G-10924 | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-G-15793 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 2 | X | 1 |
| MIL-G-21568 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | X | 1 |
| MIL-G-25013 | 1 | 1 | 2 | 1 | 4 | 1 | 1 | 2 | 1 | 3 | 1 | X | 1 |
| MIL-G-25537 | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-G-25760 | 2 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | X | 1 |
| MIL-G-3278 | 2 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 1 | 2 | 2 | X | 1 |
| MIL-G-3545 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-G-4343 | 2 | 3 | 2 | 1 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | X | 1 |
| MIL-G-5572 | 1 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 2 | 1 | X | 1 |
| MIL-G-7118 | 2 | 4 | 2 | 4 | 4 | 4 | 3 | 2 | 1 | 3 | 1 | X | 1 |
| MIL-G-7187 | 1 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 1 | 1 | 1 | X | 1 |
| MIL-G-7421 | 2 | 4 | 2 | 4 | 4 | 4 | 4 | 2 | 1 | 2 | 2 | X | 1 |
| MIL-G-7711 | 1 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | 1 | 1 | 1 | X | 1 |
| MIL-H-13910 | 1 | 1 | 1 | 1 | 4 | 1 | 2 | 1 | 1 | 4 | 2 | X | 1 |
| MIL-H-19457 | 4 | 2 | 4 | 4 | 3 | 1 | 4 | 4 | 1 | 4 | 4 | X | 1 |
| MIL-H-22251 | 2 | 1 | 2 | 2 | 4 | 1 | X | 2 | X | X | X | X | X |
| MIL-H-27601 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 3 | 1 | 3 | 2 | X | 1 |
| MIL-H-46170 -15°F to +400°F | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-H-46170 -20°F to +275°F | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-H-46170 -55°F to +275°F | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-H-46170 -65°F to +275°F | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-H-5606 -65°F to +235°F | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-H-5606 -65°F to +275°F | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-H-6083 | 1 | 4 | 1 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-H-7083 | 1 | 1 | 2 | 2 | 1 | 1 | 4 | 2 | 2 | 4 | 1 | X | 1 |
| MIL-H-8446 (MLO-8515) | 2 | 4 | 1 | 4 | 4 | 4 | 3 | X | 1 | 4 | 1 | X | 1 |
| MIL-J-5161 | 2 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 1 | 2 | 1 | X | 1 |
| Milk | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 4 | 1 | X | 1 |
| MIL-L-15016 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 2 | X | 1 |
| MIL-L-15017 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 2 | X | 1 |
| MIL-L-17331 | 1 | 4 | X | 4 | 4 | 4 | X | X | 1 | X | X | X | 1 |
| MIL-L-2104 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 3 | 1 | 1 | 1 | X | 1 |
| MIL-L-21260 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-L-23699 | 2 | 4 | 3 | 4 | 4 | 4 | 3 | 3 | 1 | 3 | 2 | X | 1 |
| MIL-L-25681 | 2 | 1 | 2 | 2 | 4 | 1 | 2 | 2 | 1 | 3 | 2 | X | 1 |
| MIL-L-3150 | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 2 | 1 | X | 1 |
| MIL-L-6081 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-L-6082 | 1 | 4 | 2 | 4 | 3 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-L-6085 | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 3 | 2 | X | 1 |
| MIL-L-6387 | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 1 | 2 | X | 1 |
| MIL-L-7808 | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 4 | 2 | X | 1 |
| MIL-L-7870 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 4 | 1 | 2 | 1 | X | 1 |
| MIL-L-9000 | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 3 | 2 | X | 1 |
| MIL-L-9236 | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 2 | 2 | X | 1 |
| MIL-O-3503 | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-P-27402 | 2 | 1 | 2 | 2 | 4 | 1 | X | 2 | X | X | X | X | X |
| MIL-R-25576 (RP-1) | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-S-3136, Type I Fuel | 1 | 4 | 2 | 4 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-S-3136, Type II Fuel | 2 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 1 | 2 | 2 | X | 1 |
| MIL-S-3136, Type III Fuel | 2 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 1 | 2 | 2 | X | 1 |
| MIL-S-3136, Type IV Oil High Swell | 1 | 4 | 4 | 4 | 2 | 4 | 1 | 4 | 1 | 1 | 1 | X | 1 |
| MIL-S-3136, Type IV Oil Low Swell | 1 | 4 | 1 | 4 | 3 | 4 | 1 | 1 | 1 | 1 | 1 | X | 1 |
| MIL-S-3136, Type V Oil Medium Swell | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| MIL-S-81087 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | X | 1 |
| MIL-T-5624, JP-4, JP-5 | 1 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 2 | 2 | X | 1 |
| MIL-T-83133 | 1 | 4 | 3 | 4 | 4 | 4 | 1 | X | 1 | 1 | 2 | X | 1 |
| Mineral Oils | 1 | 3 | 2 | 4 | 2 | 3 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Mixed Acids | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| MLO-7277 Hydr. | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 1 | 3 | 3 | X | 1 |
| MLO-7557 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 1 | 3 | 3 | X | 1 |
| MLO-8200 Hydr. | 2 | 4 | 1 | 4 | 4 | 4 | X | 4 | 1 | 1 | 2 | X | 1 |
| MLO-8515 | 2 | 4 | 1 | 4 | 4 | 4 | 3 | 3 | 1 | 1 | 1 | X | 1 |
| Mobil 24dte | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobil 254 Lubricant | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Mobil Delvac 1100, 1110, 1120, 1130 | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobil HF | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | X | 1 |
| Mobil Nivac 20, 30 | 1 | 1 | 1 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobil SHC 500 Series | 3 | 4 | 2 | X | 2 | 4 | 1 | 2 | 1 | 2 | 2 | X | 1 |
| Mobil SHC 600 Series | 3 | 4 | 2 | 4 | 3 | 4 | 1 | 2 | 1 | 1 | 2 | X | 1 |
| Mobil Therm 600 | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobil Velocite c | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobilgas WA200 ATF | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobilgear 600 Series | 3 | 3 | 1 | 4 | 1 | 3 | 1 | 2 | 1 | 2 | 1 | X | 1 |
| Mobilgear SHC ISO Series | 3 | 3 | 2 | 4 | 1 | 3 | 1 | 2 | 1 | 2 | 1 | X | 1 |
| Mobilgrease HP | 2 | 4 | 2 | 4 | 2 | 4 | 1 | 3 | 1 | 1 | 1 | X | 1 |
| Mobilgrease HTS | 2 | 4 | 2 | 4 | 2 | 4 | 1 | 3 | 1 | 1 | 1 | X | 1 |
| Mobilgrease SM | 2 | 4 | 2 | 4 | 2 | 4 | 1 | 3 | 1 | 1 | 1 | X | 1 |
| Mobilith AW Series | 2 | 4 | 2 | 4 | 2 | 4 | 1 | 3 | 1 | 1 | 1 | X | 1 |
| Mobilith SHC Series | 2 | 4 | 3 | 4 | 2 | 4 | 1 | 3 | 1 | 1 | 1 | X | 1 |
| Mobiljet II Lubricant | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Mobilmistlube Series | 3 | 3 | 1 | 4 | 1 | 3 | 1 | 2 | 1 | 2 | 1 | X | 1 |
| Mobiloil SAE 20 | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Mobilux | 1 | 4 | 2 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Molybdenum Disulfide Grease | 1 | 4 | 4 | X | X | X | X | X | 1 | X | X | 1 | 1 |
| Molybdenum Oxide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Molybdenum Trioxide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Molybdic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Monobromobenzene | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Monobromotoluene | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Monobutyl Paracresol | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Monochloroacetic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Monochlorobenzene | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Monochlorobutene | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Monochlorohydrin | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Monoethanolamine (MEA) | 4 | 2 | 4 | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Monoethyl Amine | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Monoisopropylamine | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Monomethyl Aniline | 4 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 2 | 4 | 1 | X | 1 |
| Monomethyl Ether (Dimethyl Ether) | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Monomethyl Ether (Methyl Ether) | 1 | 4 | X | X | X | X | X | X | 1 | X | X | X | 1 |
| Monomethyl Hydrazine | 2 | 1 | 2 | 2 | 4 | 1 | X | 2 | X | X | X | X | 1 |
| Monomethylamine (MMA) | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Monomethylaniline | 4 | 2 | 4 | 4 | X | 2 | 4 | 4 | 2 | 4 | X | X | 1 |
| Mononitrotoluene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Mononitrotoluene & Dinitrotoluene (40/60 Mixture) | 4 | 1 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | X | 2 |
| Monovinyl Acetylene | 1 | 1 | 2 | 2 | 2 | 1 | X | 2 | 1 | X | X | X | 1 |
| Mopar Brake Fluid | 3 | 1 | 2 | 1 | 3 | 2 | X | 2 | 4 | X | 4 | X | 1 |
| Morpholine | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Motor Oils | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Mustard Gas | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Myristic Acid | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Naphthalene | 4 | 4 | 4 | 4 | 4 | 4 | X | 4 | 1 | 2 | 1 | X | 1 |
| Naphthalene Chloride | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Naphthalene Sulfonic Acid | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Naphthalenic Acid | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Naphthalonic Acid | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Naphthenic Acid | 2 | 4 | 4 | 4 | 4 | 4 | X | 4 | 1 | X | 1 | X | 1 |
| Naphthylamine | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Naptha | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 1 | 2 | 2 | X | 1 |
| Natural Gas | 1 | 4 | 1 | 2 | 4 | 4 | 2 | 1 | 1 | 2 | 3 | X | 1 |
| Neatsfoot Oil | 1 | 2 | 4 | 4 | 2 | 2 | 1 | 4 | 1 | 1 | 1 | X | 1 |
| Neon | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | X | 1 |
| Neville Acid | 4 | 2 | 4 | 4 | 4 | 2 | 4 | 4 | 1 | X | 2 | X | 1 |
| Nickel Acetate | 2 | 1 | 2 | 4 | 4 | 1 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Nickel Ammonium Sulfate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nickel Chloride | 1 | 1 | 2 | 1 | 1 | 1 | 3 | 1 | 1 | 3 | 1 | X | 1 |
| Nickel Cyanide | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nickel Nitrate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nickel Salts | 1 | 1 | 2 | 1 | 1 | 1 | 3 | 1 | 1 | 3 | 1 | X | 1 |
| Nickel Sulfate | 1 | 1 | 1 | 2 | 1 | 1 | 4 | 1 | 1 | 3 | 1 | X | 1 |
| Nicotinamide (Niacinamide) | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Nicotinamide Hydrochloride | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nicotine | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Nicotine Sulfate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Niter Cake | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 1 | 1 | X | 1 |
| Nitric Acid, Red Fuming | 4 | 4 | 4 | X | X | X | X | X | 2 | X | X | 3 | 1 |
| Nitric Acid, White Fuming | X | X | X | X | X | X | X | X | X | X | X | X | 2 |
| Nitric Acid (0 - 50%) | 4 | 2 | X | X | X | X | X | X | 1 | X | X | X | 1 |
| Nitric Acid (50 - 100%) | 4 | 4 | X | X | X | X | X | X | 3 | X | X | X | 1 |
| Nitric Acid 3 Molar to 158°F | 4 | 2 | 4 | 3 | 4 | 2 | 4 | 2 | 3 | 4 | 4 | X | 2 |
| Nitric Acid Concentrated Room Temp. | X | 4 | X | X | X | X | X | X | 2 | X | X | X | 1 |
| Nitric Acid Concentrated to 158°F | 4 | 4 | 4 | 4 | 4 | 4 | 4 | X | 4 | 4 | 4 | X | 2 |
| Nitroaniline | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrobenzene | 4 | 1 | 4 | 4 | 4 | 1 | 4 | 4 | 2 | 4 | 4 | X | 1 |
| Nitrobenzoic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrocellulose | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrochlorobenzene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrochloroform | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrodiethylaniline | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrodiphenyl Ether | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Nitroethane | 4 | 2 | 2 | 2 | 4 | 2 | 4 | 2 | 4 | 4 | 4 | X | 1 |
| Nitrofluorobenzene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrogen | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | X | 1 |
| Nitrogen Oxides | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrogen Tetroxide (N2O4) | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | X | 2 |
| Nitrogen Trifluoride | X | X | X | X | X | X | X | X | X | X | X | X | 2 |
| Nitroglycerine | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrogylcerol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitroisopropylbenzene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitromethane | 4 | 2 | 3 | 3 | 4 | 2 | 4 | 2 | 4 | 4 | 4 | X | 1 |
| Nitrophenol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitropropane | 4 | 2 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | X | 1 |
| Nitrosyl Chloride | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Nitrosylsulfuric Acid | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Nitrothiophene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrotoluene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrous Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Nitrous Oxide | 1 | 1 | X | X | 1 | X | X | X | 1 | X | X | X | 1 |
| Nonane | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Noryl GE Phenolic | 1 | 1 | X | X | X | X | X | X | X | X | X | X | X |
| Nyvac FR200 Mobil | 1 | 1 | 2 | 4 | X | 4 | X | 3 | 1 | X | X | X | 1 |
| Octachloro Toluene | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Octadecane | 1 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 1 | 1 | 1 | X | 1 |
| Octanal (n-Octanaldehyde) | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Octane or n-Octane | 1 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Octyl Acetate | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Octyl Alcohol | 2 | 3 | 2 | 2 | 2 | 2 | 4 | 2 | 1 | 4 | 2 | X | 1 |
| Octyl Chloride | 1 | 4 | 2 | 4 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Octyl Phthalate | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Olefins | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Oleic Acid | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 2 | X | X | 1 |
| Oleum (Fuming Sulfuric Acid) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | X | X | 1 |
| Oleum Spirits | 2 | 4 | 3 | 4 | 4 | 4 | X | 2 | 1 | 3 | 2 | X | 1 |
| Oleyl Alcohol | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Olive Oil | 1 | 2 | 2 | 4 | 3 | 2 | 1 | 2 | 1 | 1 | 1 | X | 1 |
| Oronite 8200 | 2 | 4 | 1 | 4 | 4 | 4 | X | 4 | 1 | 1 | 1 | X | 1 |
| Oronite 8515 | 2 | 4 | 1 | 4 | 4 | 4 | X | 4 | 1 | 1 | 1 | X | 1 |
| Ortho-Chloro Ethyl Benzene | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Ortho-Chloroaniline | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Ortho-Chlorophenol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Ortho-Cresol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Ortho-Dichlorobenzene | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
| Ortho-Nitrotoluene | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Orthophos Acid | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| OS 45 Type III (OS45) | 2 | 4 | 1 | 4 | 4 | 4 | X | 2 | 1 | 4 | 2 | X | 1 |
| OS 45 Type IV (OS45-1) | 2 | 4 | 1 | 4 | 4 | 4 | X | 2 | 1 | 4 | 2 | X | 1 |
| OS 70 | 2 | 4 | 1 | 4 | 4 | 4 | X | 2 | 1 | 4 | 2 | X | 1 |
| Oxalic Acid | 2 | 1 | 2 | 2 | 2 | 1 | X | 2 | 1 | X | 1 | X | 1 |
| Oxygen, 200°-300°F (Evalute for specific applications) | 4 | 4 | X | X | X | X | X | X | 2 | X | X | X | 1 |
| Oxygen, 300°-400°F (Evalute for specific applications) | 4 | 4 | 4 | 4 | 1 | 4 | 4 | 4 | 2 | 4 | 4 | X | 1 |
| Oxygen, Cold (Evalute for specific applications) | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | X | 1 |
| Oxygen, Liquid | 4 | 4 | 4 | X | X | X | X | X | 4 | X | X | 4 | 2 |
| Ozonated Deionized Water | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 2 |
| Ozone | 4 | 1 | 2 | 4 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | X | 1 |
| Paint Thinner, Duco | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | X | 1 |
| Palmitic Acid | 1 | 2 | 2 | 2 | 4 | 2 | X | 3 | 1 | 1 | 1 | X | 1 |
| Para-Aminobenzoic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Para-Aminosalicylic Acid | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Para-Bromobenzylphenyl Ether | X | X | X | X | X | X | X | X | X | X | X | X | 1 |
| Para-Chlorophenol | 3 | 1 | 1 | 1 | 2 | 1 | 4 | 1 | 3 | 4 | 1 | X | 1 |
| Paracymene | X | X | 4 | 4 | X | 4 | 4 | 4 | 1 | 3 | 2 | X | 1 |
| Para-Dichlorobenzene | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |