Malathion :Malathion 50 EC Insecticide

Product description:

NOMENCLATURE:-

Common name malathion (BSI, E-ISO, (m) F-ISO, ESA, BAN); maldison (Australia, New Zealand); malathon (JMAF); mercaptothion (South Africa); carbofos (USSR); no name (Germany); mercaptotion (Argentina) IUPAC name diethyl (dimethoxythiophosphorylthio)succinate; S-1,2-bis(ethoxycarbonyl)ethyl O,O-dimethyl

Phosphorodithioate
Chemical Abstracts name diethyl [(dimethoxyphosphinothioyl)thio]butanedioate CAS RN [121-75-5] EEC no. 204-497-7 Development codes EI 4049 (Cyanamid) Official codes OMS 1; ENT 17 034
PHYSICAL CHEMISTRY:-
Composition Tech. grade is c. 95% pure. Mol. wt. 330.4 M.f. C10H19O6PS2 Form Tech. is a clear, amber liquid. M.p. 2.85 ºC B.p. 156-157 ºC/0.7 mmHg. V.p. 5.3 mPa (30 ºC) KOW logP = 2.75 Henry 1.21 ´ 10-2 Pa m3 mol-1 (calc.) S.g./density 1.23 (25 ºC) Solubility In water 145 mg/l (25 ºC). Miscible with most organic solvents, e.g. esters, ketones, ethers, aromatic hydrocarbons. Slightly soluble in petroleum ether and some types of mineral oil. Stability Relatively stable in neutral, aqueous media. Decomposed by strong acids and by alkali; hydrolysis DT50 107 d (pH 5), 6 d (pH 7), 0.5 d (pH 9) (all 25 °C); F.p. 163 °C (Pensky-Martens closed cup)

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