Fenoprop
Agent Name
Fenoprop
Alternative Name
Silvex
CAS Number
93-72-1
Formula
C9-H7-Cl3-O3
Major Category
Pesticides
Synonyms
Silvex; (+-)-2-(2,4,5-Trichlorophenoxy)propanoic acid (9CI); (+-)-Fenoprop; (+-)-Silvex; 2,4,5-TCPPA; 2-(2,4,5-Trichloor-fenoxy)-propionzuur [Dutch]; 2-(2,4,5-Trichlor-phenoxy)-propionsaeure [German]; 2-(2,4,5-Trichlorophenoxy)propionic acid; Acide 2-(2,4,5-trichloro-phenoxy) propionique [French]; Acido 2-(2,4,5-tricloro-fenossi)-propionico [Italian]; Amchem 2,4,5 TP; Amchem 2,4,5-TP; Aqua-vex; Color-set; Double strength; Fenoprop; Fenormone; Fruitone T; Herbicides, silvex; Kurosal G; Kwas 2,4,5-trojchlorofenoksypropionowy [Polish]; Kyselina 2-(2,4,5-trichlorfenoxy)propionova [Czech]; Miller Nu Set; Propon; Silvex [ANSI]; Silvi-Rhap; Sta-Fast; alpha-(2,4,5-Trichlorophenoxy)propionic acid; 2,4,5-TP acid; Propanoic acid, 2-(2,4,5-trichlorophenoxy)-; Propionic acid, 2-(2,4,5-trichlorophenoxy)-; [ChemIDplus] 2,4,5-TP; [HSDB] UN2765
Category
Herbicides, Chlorophenoxy
Description
White solid; [HSDB] Faintly brown powder; [MSDSonline]
Sources/Uses
Used as industrial, commercial, and agricultural herbicide for rice, sugarcane, maize, orchards, pasture, rangeland, lawns, turf, and aquatic areas; [HSDB]
Comments
Ingestion of 1 mg/kg of the free acid by 8 humans caused no notable adverse effects; A skin, eye, and mucous membrane irritant; In high dose chronic animal studies, the only adverse effects observed were increase in relative kidney weights and histopathological changes in the liver; [HSDB] A skin, eye, nose, and throat irritant; May cause corneal injury and damage to liver and kidneys; [CAMEO] A skin irritant; [EPA OHM/TADS] Chlorophenoxy herbicides are possible human carcinogens; [IARC] See "2,4,5T."
Restricted
Banned for most uses by the EPA in 1979 emergency action; All US registration cancelled in 1985; Banned for use in Italy in 1970; [HSDB]
Biomedical References
Exposure Assessment
Vapor Pressure
9.97E-06 mm Hg
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Phenoxy pesticide, solid, toxic."
Adverse Effects
Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
IARC Carcinogen
Possible (2b)
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: