HTML Document WHO Class 1 Pesticides

The World Health Organisation has classified active ingredients of pesticides according to their acute toxicity.
Release date 15/01/2004
Contributor Cornel Nitu

The World Health Organisation has classified active ingredients of pesticides according to their acute toxicity. Those which are considered to be most hazardous are placed in:
  • Class 1a, "Extremely Hazardous"; or
  • Class 1b, "Highly Hazardous"
.
Many organizations and countries have taken steps to reduce or avoid altogether the use of pesticides in these categories.

WHO class 1a: "Extremely Hazardous"

Acrolein, Aldicarb, Arsenous, Brodifacoum, Bromadiolone, Bromethalin, Calcium, Captafol, Chlorfenvinphos, Chlormephos, Chlorophacinone, Chlorthiophos, Coumaphos, Crimidine, Cycloheximide, Demephion-o, Demephion-s, Demeton-o, Demeton-s, Dibromochloropropane, Difenacoum, Difethialone, Dimefox, Diphacinone, Disulfoton, Epn, Ethoprophos, Fenamiphos, Fensulfothion, Flocoumafen, Fonofos, Fosthietan, Hexachlorobenzene, Leptophos, Mephosfolan, Mercuric, Mevinphos, Parathion, Parathion, Phenylmercury, Phorate, Phosfolan, Phosphamidon, Prothoate, Schradan, Scilliroside, Sodium, Sulfotep, Tepp, Terbufos, Thionazin, Trichloranat.

WHO class 1b: "Highly Hazardous"

3-chloro-1,2 Propanediol, Aldoxycarb, Aldrin, Allyl Alcohol, Aminocarb, Antu, Azinphos Ethyl, Azinphos Methyl, Benfuracarb, Blasticidin-s, Bromphos Ethyl, Butocarboxim, Butoxycarboxim, Cadusafos, Calcium Arsenate, Carbofuran, Carbophenothion, Cloethocarb, Coumachlor, Coumatetralyl, Crotoxyphos, Demeton-s Methyl, Demeton-s Methylsulphon, Dichlorvos, Dicrotophos, Dieldrin, Dimetilan, Dinoseb, Dinoseb Acetate, Dinoterb, Dioxathion, Dnoc, Edifenphos, Endrin, Esp, Famphur, Fenthion, Flucythrinate, Flouroacetamide, Formetanate, Fosmethilan, Furathiocarb, Heptenophos, Isazophos, Isofenphos, Isoxathion, Lead Arsenate, Mecarbam, Mercuric Oxide, Methamidophos, Methidathion, Methomyl, Monocrotophos, Nicotine, Nitralicarb, Omethoate, Oxamyl, Oxydemeton Methyl, Paris Green, Pentachlorophenol, Phenylmercury Nitrate, Pirimiphos Ethyl, Propaphos, Propetamphos, Sodium Arsenite, Sodium Cyanide, Strychnine, Tefluthrin, Thallium Sulfate, Thiofanox, Thiometon, Triamiphos, Triazophos, Tributyltin Oxide, Vamidothion, Warfarin, Zeta Cypermethrin, Zinc Phosphide.