Malathion-Malathion 50 EC
Malathion-Malathion 50%EC
Our offered Malathion 50% EC is a widly used
formulation in public health.
Malathion
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)