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Chemical name: O,O,O,O-tetramethyl O,O-thiodi-p-phenylenebis(phosphorothioate) Physical andchemical properties: Form Colourless crystals; (tech., brown, viscous liquid)M.p.30.0-30.5 C KOW logP =4.91 S.g./density 1.32 (tech.) Solubility In water 0.03 mg/l (25 C). Soluble in common organic solventssuch as diethyl ether, aromatic and chlorinated hydrocarbons, In hexane 9.6 g/l. Stability Hydrolysed by strongacids and alkalis, (optimum stability is at pH 5-7). Do not store attemperatures above 49 C. Toxicity: Oral Acute oral LD50 for malerats 4204, female rats >10 000 mg/kg. Skin and eye Acute percutaneous LD50(24 h) for rabbits 2181, rats >4000 mg/kg. Non-irritating to eyes and skin.NOEL (2 y) for rats 300 mg/kg diet. Other No toxic symptom felt by humansreceiving 256 mg/man for 5d, or 64 mg/man for 28d. Formulation andspecification: 50%EC,1%G Packing: Variesaccording to customers request. Usages: Temephosis an nonsystemic organophosphorus insecticide used t