2,4-D 2-Ethylhexyl ester

Synonyms

2-Ethylhexyl 2,4-dichlorophenoxyacetate; 2,4-D-2-ethylhexyl; (2,4-Dichlorophenoxy)acetic acid 2-ethylhexyl ester; 2-Ethylhexyl (2,4-dichlorophenoxy)acetate; Acetic acid, (2,4-dichlorophenoxy)-, 2-ethylhexyl ester; [ChemIDplus] 2,4-D 2-EHE; [Reference #1]

Category

Herbicides, Chlorophenoxy

Description

Golden yellow liquid; [HSDB] Amber to light brown liquid with phenolic odor; [MSDSonline]

Sources/Uses

Used as selective herbicide for control of broad-leaved weeds in cereal and grass seed crops, pasture, lawn, turf, and uncultivated land; [ExPub: CPS&Q: IUCLID]

Comments

A skin and eye irritant; The esters of 2,4-D are hydrolyzed rapidly in the body to 2,4-D; Do not accumulate in mammals; Plasma half-life is about 1 day; Analysis of 2,4-D as esters and amine salts in 1982 found the esters more highly contaminated with dioxins; [HSDB] Formerly identified as the isooctyl ester; The acid form (2,4-D) is used as representative of the salts and esters due to close similarities in relative toxicities; Not irritating to skin or eyes; [Reference #2] Chlorophenoxy herbicides are possibly carcinogenic to humans (Group 2B); [IARC] See "2,3,7,8-Tetrachlorodibenzo-p-dioxin." See "2,4D."

Biomedical References

0.000359 mm Hg

LC50 (rat) > 5,400 mg/m3

Reference Link #2

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Processes

Industrial Processes with risk of exposure:

• Farming (Pesticides)