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 "2,4,5-T."

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]

Exposure Assessment
Vapor Pressure

9.97E-6 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Phenoxy pesticide, solid, toxic."

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

IARC Carcinogen

Possible Carcinogen

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: