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Chemical Identification
Common Name
Leptophos
中文通用名
溴苯膦
IUPAC
(RS)-(O-4-bromo-2,5-dichlorophenyl O-methyl phenylphosphonothioate)
CAS
O-(4-bromo-2,5-dichlorophenyl) O-methyl phenylphosphonothioate
CAS No.
21609-90-5
Molecular Formula
C13H10BrCl2O2PS
Molecular Structure
Category
Activity
Insecticide
Premix
Emulsifiable concentrates 3 Ib a.i./US gall (300 g/1). Wettable powder 45%; dust 3%,granulets 5%.
Physical Properties
White amorphous solid. Molecular weight: 412.1 g/mol; Melting point70.2-70.6℃ (99.4% purity).Vapour pressure:- 1.5 x 10-5 mmHg at 25℃.Very soluble in benzene, 1.3 kg/l; cyclohexane 142 g/l;acetone, 470 mg/l.
Toxicology
(Rat): Oral LD50 52.8 mg/kg. Dermal LD50 >10,000 mg/kg
Environmental Profile
Only very slightly soluble in water, 2.4 mg/l at 25
Transport Information
Signal Word:WARNING; Hazard Class:II(Moderately hazardous)

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