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Chemical Identification
Common Name
Propetamphos
中文通用名
胺丙畏
IUPAC
(RS)-[(E)-O-2-isopropoxycarbonyl-1-methylvinyl O-methyl ethylphosphoramidothioate]
CAS
1-methylethyl (2E)-3-[[(ethylamino)methoxyphosphinothioyl]oxy]-2-butenoate
CAS No.
31218-83-4
Molecular Formula
C10H20NO4PS
Molecular Structure
Physical Properties
Yellowish oily liquid boiling at 87-89°C at 0.005 mm Hg, d420 1.1294, n20 1.495. Thermostability is very good; hydrolytic stability at 24°C in an aqueous buffered solution is dependent on the pH values – at pH 3, 6, 9 the half-lifes are roughly 11, 365, and 41 days respectively. Soluble in most organic solvents.
Toxicology
Oral:Acute oral LD50 for male rats 119, female rats 59.5 mg/ kg. Percutaneous:Acute percutaneous LD50 for male rats 2825, female rats >2260 mg/ kg. Inhalation: LC50 (4 h) for male rats >1.5, female rats 0.69 mg/l air.
Environmental Profile
Ecotoxicology: 
Algae: LC50 (96 h) for green algae 2.9 mg/l.Birds:Acute oral LD50 for mallard ducks 197 mg/ kg.Daphnia: LC50 (48 h) 14.5µg/l.Fish: LC50 (96 h) for carp 7.0 mg/l; for rainbow trout 4.6 mg/ kg diet. 

Environmental fate: 
Animals:In rats, propetamphos is completely metabolised and rapidly excreted, mainly via urine and exhaled air. The oxidative metabolic process leading to CO2 formation predominates at lower doses. Propetamphos is detoxified through hydrolytic reactionSoil:Residual activity indoors can be as much as 2-3 months. WATER SOLUBILITY: 110 ppm at 24°C HAZARDS: Fish: LC50 6.4 mg/l (96 h) (carp)
Transport Information
Signal Word:WARNING; Hazard Class:Ib(Highly hazardous)

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