Agent Name

Butachlor

CAS Number

23184-66-9

Formula

C17-H26-Cl-N-O2

Major Category

Pesticides

Synonyms

2',6'-Diethyl-N-butoxymethyl-2-chloroacetanilide; 2',6'-Diethyl-N-butoxymethyl-alpha-chloroacetanilide; 2-Chloro-2',6'-diethyl-N-(butoxymethyl)acetanilide; Acetamide, N-(butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)-; Acetanilide, 2-chloro-2',6'-diethyl-N-(butoxymethyl)-; Acetanilide, N-(butoxymethyl)-2-chloro-2',6'-diethyl-; Amichlor; Bilchlor; Butaclor; Butanex; CP 53619; Delchlor; Delchlor 5G; Hiltachlor; Mach-Mach; Machete; Machete (herbicide); Machette; N-(Butoxymethyl)-2-chloro-2',6'-diethylacetanilide; N-(Butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide; N-Butoxymethyl-alpha-chloro-2',6'-diethylacetanilide; Pillarsete; Rasayanchlor; SHA 112301; Weedout; [ChemIDplus]

Category

Herbicides, Chloracetanilide

Description

Amber or light yellow liquid; [HSDB] Light yellow liquid; [MSDSonline]

Sources/Uses

Used as herbicide for pre-emergence control of most annual grasses and some broadleaf weeds in seeded and transplanted rice grown in Asia, South America, Europe, and Africa; Not marketed in the US; [HSDB] Used in rice and barley; [Krieger, p. 1760]

Comments

No adverse effects in rats or dogs fed up to 1000 ppm for 2 years; [HSDB] May cause irritation; [MSDSonline]

Restricted

Not currently registered with the EPA for use in the US; [HSDB]

Exposure Assessment
Vapor Pressure

2.9E-6 mm Hg

Half Life

Biological half-lives after exposure to high and low concentrations were 11.6 and 23.1 days, respectively; [HSDB]

Flammability (NFPA)

1: Must be preheated

Adverse Effects
Skin Sensitizer

Yes

Hepatotoxin

Hepatotoxin, Secondary

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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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: