Specification :

Fenpropathrin

Common name: fenpropathrin; fenpropathrine
IUPAC name: ( RS) -a-cyano-3-phenoxybenzyl 2, 2, 3, 3-tetramethylcyclopropanecarboxylate
Chemical Abstracts name: cyano( 3-phenoxyphenyl) methyl 2, 2, 3, 3-tetramethylcyclopropanecarboxylate
CAS RN: [ 64257-84-7] racemate; [ 39515-41-8] unstated stereochemistry

PHYSICAL CHEMISTRY
Mol. wt.: 349.4; M.f.: C22H23NO3; Form: Yellow-brown solid ( tech.) . M.p.: 45-50 º C; V.p.: 0.730 mPa ( 20 º C) ; KOW: logP = 6 ( 20 º C) ; S.g./ density: 1.15 ( 25 º C) . Solubility: In water 14.1 ug/ l ( 25 º C) . In xylene, cyclohexanone 1000, methanol 337 ( all in g/ kg, 25 º C) . Stability: Decomposed in alkaline solutions. Exposure to light and air leads to oxidation and loss of activity.

APPLICATIONS
Mode of action: Acaricide and insecticide with repellent, and contact and stomach action.
Uses: Control of many species of mites ( except rust mites) and insects ( e.g. whitefly, lepidopterous larvae, leaf miners, leafworms, bollworms, etc.) on pome fruit, citrus fruit, vines, hops, vegetables, ornamentals ( including ornamental trees) , cotton, field crops, and glasshouse crops ( cucurbits, tomatoes, ornamentals, etc.) .
Formulation types: EC; SC; UL; WP.
Compatibility: Incompatible with alkaline materials.

MAMMALIAN TOXICOLOGY
Oral: Acute oral LD50 for male rats 70.6, female rats 66.7 mg/ kg ( in corn oil) .
Skin and eye: Acute percutaneous LD50 for male rats 1000, female rats 870, rabbits > 2000 mg/ kg. Not a skin irritant; mild eye irritant ( rabbits) . Non-sensitising to skin.
Inhalation: LC50 ( 4 h) for rats > 96 mg/ m3.
ADI: 0.03 mg/ kg b.w.
Other: Non-mutagenic.
Toxicity class: WHO ( a.i.) II; EPA ( formulation) II
EC hazard: T+ ; R26| T; R25| Xn; R21| N; R50, R53

ECOTOXICOLOGY
Birds: Acute oral LD50 for mallard ducks 1089 mg/ kg. Dietary LC50 ( 8 d) for bobwhite quail and mallard ducks > 10 000 mg/ kg diet.
Fish: LC50 ( 48 h) for bluegill sunfish 1.95 ug/ l.

ENVIRONMENTAL FATE
Soil/ Environment: Degraded principally by photolysis, DT50 2.7 w in river water. Duration of activity in soil c. 1-5 d.