Agent Name

2,4-D, butoxypropyl ester

CAS Number

1928-45-6

Formula

C15-H20-Cl2-O4

Major Category

Pesticides

Synonyms

2,4-D-3-butoxypropyl; 2,4-Dichlorophenoxyacetic acid 3-butoxypropyl ester; 2,4-Dichlorophenoxyacetic acid, propylene glycol butyl ether ester; 3-Butoxypropyl 2,4-dichlorophenoxyacetate; Acetic acid, (2,4-dichlorophenoxy)-, 3-butoxypropyl ester; Dow Weed Killer X; Butoxypropyl 2,4-dichlorphenoxyacetate; [ChemIDplus]

Category

Herbicides, Chlorophenoxy

Sources/Uses

Used as herbicide; [HSDB]

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] Chlorophenoxy herbicides are possibly carcinogenic to humans (Group 2B); [IARC] See "2,3,7,8-Tetrachlorodibenzo-p-dioxin." See "2,4-D."

Restricted

No longer registered as a pesticide for use in the US; [HSDB]

Exposure Assessment
Vapor Pressure

2.27E-6 mm Hg

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

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