Chlormephos (chemical formula: C5H12ClO2PS2) is an organothiophosphate insecticide. It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities.

CAS：24934-91-6
中文别名：S-(氯甲基)-O,O-二乙基二硫代磷酸酯;氯美磷;氯甲磷;s-氯甲基-0，0-二乙基二硫代磷酸酯;
英文别名：Chlormephos;Dotan;Phosphorodithioic acid,S-(chloromethyl) O,O-diethyl ester;S-chloromethyl O,O-diethyl phosphorodithioate;Chlormephos [BSI:ISO];S-(chloromethyl) O,O-diethyl phosphorodithioate;dithiophosphoric acid O,O\'-diethyl ester-S-chloromethyl ester;S-(Chloromethyl) O,O-diethyl phosphorodithioate,Chlormephos;chloromethylsulfanyl-diethoxy-sulfanylidene-λ⁵-phosphane;S-Chloromethyl O,O-diethyl phosphorodithioate;Chlormethylfos;Caswell No. 195B;Chlormefos;Dithiophosphorsaeure-O,O\'-diaethylester-S-chlormethylester;
分子式：C5H12ClO2PS2
分子量：234.704
精确质量：233.97
Psa：85.66
Logp：3.864

PubChem号：24868861
EINECS号：246-538-1
RTECS号：TD5170000
BRN号：1680996
MDL号：MFCD00055471

密度：1.295g/cm3
沸点：249.5ºC at 760mmHg
熔点：53-54°C
闪点：100°C
折射率：1.526
储存条件：库房通风低温干燥,与食品原料分开储运
蒸汽压：0.0362mmHg at 25°C

RTECS号：TD5170000
安全说明：S23; S38
海关编码：2930909065
危险品运输编码：3018
危险类别：6.1(a)
包装等级：II
危险品标志：T+; N