Specifications
Specification: 80%TC, 40%EC, 50%EC
Chemical Name: (E)-1-methylethyl 3-[[(ethylamino) methoxyphosphinothioyl] oxy]-2-butenoate
Common Name: Propetamphos
Trade Name: Catalyst, Safrotin
CAS Registry Number: 31218-83-4
Empirical Formula: C10H20NO4PS
Molecular Weight: 281.3
Physical & Chemical Properties
Physical State: Oily liquid
Color: Light brown to straw
Flash Point: >100oC (Pensky Martins Closed Cup)
Boiling Point: 87-89oC at 0.005 mmHg
Specific Gravity: 1.12 + 0.03 g/cm3 at 20oC
Solubility: Soluble in organic solvents, i. E., xylene, hexane, acetone; Soluble in water at 110 mg/l at 24oC
Stability: The half-life is greater than 5 years at 20oC. In a buffered aqueous solution at 20oC the half-lives ranged from 37 to 47 days between pH 5 and 9. The half-life in an aqueous media exposed to sunlight is approximately 5 days.
Vapor Pressure: 8.1 x 10-5 mmHg (25oC).
Toxicity
Acute oral LD50 for male rats 119, female rats 59.5 mg/kg.
Skin and eye Acute percutaneous LD50: For male rats 2825, female rats >2260 mg/kg.
Inhalation: (4 h) for male rats >1.5, female rats 0.69 mg/l air.
Birds: Acute oral LD50 for mallard ducks 197 mg/kg.
Fish: LC50 (96 h) for carp 7.0 mg/l; For rainbow trout 4.6 mg/kg diet.
Bees: Daphnia: LC50 (48 h) 14.5μ G/l.
Algae: LC50 (96 h) for green algae 2.9 mg/l.
China
