Agent Name

Sodium trichloroacetate

Alternative Name

Trichloroacetic acid sodium salt

CAS Number

650-51-1

Formula

C2-H-Cl3-O2.Na

Major Category

Metals

Synonyms

Trichloroacetic acid sodium salt; ACP grass killer; Allied Arcadian Sodium TCA; Antiperz; Antyperz; Dow sodium TCA inhibited; Green cross couch grass killer; Natriumtrichlooracetaat [Dutch]; Natriumtrichloracetat [German]; STCA; Sodio(tricloroacetato di) [Italian]; Sodium (trichloracetate de) [French]; Sodium TCA; Sodium TCA inhibited; Sodium trichloroacetate; Sodium trichloroacetic acid; TCA sodium; TCA-sodium [ISO]; Trichloressigsaures natrium [German]; Trichloroacetic acid sodium salt; Trichloroctan sodny [Czech]; Varitox; Weedmaster grass killer; [ChemIDplus]

Category

Organic Acids, Metal Salts

Description

Yellow deliquescent solid; [Merck Index] White to yellow hygroscopic solid; [ICSC] Off-white granules; [MSDSonline]

Sources/Uses

Used as selective pre-emergence herbicide to control annual and perennial grasses in various food crops, cotton, and non-crop areas; as dyeing auxiliary; No longer registered with the EPA for use as pesticide in the US, cancelled; [HSDB]

Comments

A skin, eye, and respiratory tract irritant; [ICSC] A strong nose and throat irritant; [HSDB] A respiratory tract irritant; [eChemPortal: ESIS] An irritant; [MSDSonline] The ACGIH profile is for Trichloroacetic acid (76-03-9) and the sodium salt (650-51-1). See "Trichloroacetic acid."

Exposure Assessment
MAK

2 mg/m3, inhalable fraction

Vapor Pressure

2.6E-8 mm Hg

Lethal Concentration

LC50 (rat) > 365,000 mg/m3/4h

Adverse Effects
ACGIH Carcinogen

Confirmed Animal

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: