Agent Name

Carfentrazone-ethyl

CAS Number

128639-02-1

Formula

C15-H14-Cl2-F3-N3-O3

Major Category

Pesticides

Synonyms

Aim; Aurora; Aurora (pesticide); Aurora 50WG; F 8426; F8426; Kuaimieling; Spotlight; Spotlight 24EC; Benzenepropanoic acid, .alpha.,2-dichloro-5-(4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl)-4-fluoro-, ethyl ester; Ethyl 2-chloro-3-(2-chloro-4-fluoro-5-(4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl)phenyl)propanoate; [ChemIDplus]

Category

Herbicides, Protox-Inhibiting

Description

Yellow liquid; [Merck Index] Yellow-orange liquid with a mild odor of petroleum; [HSDB]

Sources/Uses

Used as post-emergence herbicide for control of broadleaf weeds, winter annuals, and mustards in cereals, corn, cotton, and rice; Also used as cotton defoliant; [HSDB]

Comments

The protox inhibitor herbicides (Fomesafen, Oxadiazon, Lactofen, Sulfentrazone, Carfentrazone-ethyl, Oxyfluorofen and Bifenox) can disrupt porphyrin metabolism; "It has been speculated that a transient form of porphyria variegate may occur following a massive exposure or long-term exposure to lower doses." [HSDB] May cause irritation; [MSDSonline] See "Fluthiacet-methyl."

Reference Link

EPA Pesticide Chemical Search

Exposure Assessment
Vapor Pressure

1.2E-7 mm Hg

Lethal Concentration

LC50 (rat) >5,090 mg/m3

Explanatory Notes

See "2017 Notice of Intended Changes." [TLVs and BEIs]

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: