Chemical Identification
Common Name
Prallethrin
中文通用名
炔丙菊酯
IUPAC
(RS)-2-methyl-4-oxo-3-prop-2-ynylcyclopent-2-enyl (1RS,3RS;1RS,3SR)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate
or
(RS)-2-methyl-4-oxo-3-prop-2-ynylcyclopent-2-enyl (1RS)-cis-trans-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate
CAS
2-methyl-4-oxo-3-(2-propynyl)-2-cyclopenten-1-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate
CAS No.
23031-36-9
Molecular Formula
C19H24O3
Molecular Structure
Category
Activity
A synthetic pyrethroid with fast knock-down activity against household pest insects. It is used in public  health against mosquitoes, houseflies and cockroaches.
Premix
PRALLETHRIN+CYPHENOTHRIN
Physical Properties
Molecular weight:300.4; Physical form:Yellow to yellow-brown liquid. Density:1.03 (20 °C); Flash point:139 °C (Pensky-Martens closed test); Vapour pressure:<0.013 mPa (23.1 °C); Partition coefficient(n-octanol and water):logP = 4.49 (25 °C); Solubility:In water 8 mg/l (25 °C). In hexane, methanol, xylene >500 g/ kg, 20-25 °C.; Stability:Under normal storage conditions, stable for at least 2 years.
Toxicology
Oral:Acute oral LD50 for male rats 640, female rats 460 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Non-irritating to the eyes and skin (rabbits). Not a skin sensitiser (guinea pigs). Inhalation: LC50 (4 h) for rats 288-333 mg/m3.
Environmental Profile
Ecotoxicology: 
Birds:Acute oral LD50 for bobwhite quail 1171, mallard ducks >2000 mg/kg. Dietary LC50 for bobwhite quail and mallard ducks >5620 ppm.Daphnia: EC50 (48 h) 0.0062 mg/l.Fish: LC50 (96 h) for rainbow trout 0.012, bluegill sunfish 0.022 mg/l. WATER SOLUBILITY: 8 mg/l at 25° C
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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