Acids and alkalis |
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Solvents |
   Aliphatic: petroleum, kerosene, gasoline |
   Aromatic: benzene, toluene, xylene |
   Halogenated: chloroform, trichloroethylene, methylchloride |
   Miscellaneous: water, alcohols, ketones, glycols, turpentine |
Soaps and detergents |
Plastics and resins |
   Epoxy, phenolic and acrylic monomers |
   Amine catalysts |
   Styrene, benzoyl peroxide |
Metal salts |
   Nickel, chromium, cobalt, platinum, arsenic |
Plants |
   Bristles, thorns |
   Calcium oxalate: dieffenbachia, philodendron, daffodil, agave |
   Phototoxic psoralens: Apiaceae, Rutaceae |
Particles |
   Sand, sawdust, fiberglass, metal filings, etc. |