Leptophos (O-(4-bromo-2,5-dichlorophenyl) O-methyl phenylphosphonothioate) belongs to the organophosphates and at room temperature it is a stable white solid. It is also known as Phosvel, Abar and Vcs 506. Leptophos was primarily used as a pesticide and fungicide. for rice, cotton, fruit and vegetables until its use was discontinued in 1975.

CAS：21609-90-5
中文别名：O-(4-溴-2,5-二氯苯基)-O-甲基苯基硫代膦酸酯;苯溴硝硫磷;对溴磷;溴苯磷;
英文别名：LMB;CI-940;(Ξ)-[O-(4-bromo-2,5-dichlorophenyl) O-methyl phenylphosphonothioate];O-(4-Bromo-2,5-dichlorophenyl) O-methyl phenylphosphonothioate;nk711;MBCP;O-(4-bromo-2,5-dichlorophenyl) O-methyl P-phenylphosphonothioate;PSL;Abar;lepton;Fosvel;V.C.S.;Phosphonothioic acid, phenyl-, O-(4-bromo-2,5-dichlorophenyl) O-methyl ester;(RS)-(O-4-bromo-2,5-dichlorophenyl O-methyl phenylphosphonothioate);LEPTOMYCIN B;
分子式：C13H10BrCl2O2PS
分子量：412.066
精确质量：409.87
Psa：60.36
Logp：6.0667

MDL号：MFCD00128037
RTECS号：TB1720000
EINECS号：244-472-8
BRN号：2152663
PubChem号：24860164

密度：1.66 g/cm3
沸点：444.4ºC at 760 mmHg
熔点：71-73°C
闪点：>100°C
折射率：1.651
储存条件：库房通风低温干燥,与食品原料分开储运
蒸汽压：1.12E-07mmHg at 25°C

RTECS号：TB1720000
安全说明：S25; S36/37/39; S45; S60
危险类别码：R21; R25; R39/25; R50/53
危险品运输编码：2783
海关编码：2930909090
危险类别：6.1(a)
包装等级：II
危险品标志：T; N