Agent Name

Methionine

CAS Number

63-68-3

Formula

C5-H11-N-O2-S

Major Category

Biological Agents

Synonyms

(L)-Methionine; (S)-2-Amino-4-(methylthio)butanoic acid; 2-Amino-4-(methylthio)butyric acid, (S)-; 2-Amino-4-methylthiobutanoic acid (S)-; Butanoic acid, 2-amino-4-(methylthio)-, (S)-; Cymethion; L-(-)-Methionine; L-Homocysteine, S-methyl-; L-Methionine; L-Methioninum; L-alpha-Amino-gamma-methylmercaptobutyric acid; L-alpha-Amino-gamma-methylthiobutyric acid; L-gamma-Methylthio-alpha-aminobutyric acid; MET; Methioninum [INN-Latin]; Metionina [DCIT]; Neo-methidin; S-Methionine; Toxin WAR (Bacillus thuringiensis strain PS205C); Methionine, L-; [ChemIDplus] M; [Merck Index]

Category

Amino Acids and Derivatives

Description

Solid; [Merck Index] Colorless or white solid with a faint odor; [HSDB] White powder; [Sigma-Aldrich MSDS]

Sources/Uses

An essential amino acid; Used therapeutically as an antidote for acetaminophen poisoning and a urinary acidifier; [Merck Index] Chelating agent for heavy metals; [ChemIDplus] Used as a flavoring agent and nutritional supplement for foods; [FDA] Used in pharmaceuticals, as a feed additive, for vegetable oil enrichment, and as single cell protein; [NTP] Permitted for use as an inert ingredient in non-food pesticide products; [EPA]

Comments

Reacts with water evolving hydrogen sulfide (toxic and flammable); [CAMEO] May cause irritation; [Sigma-Aldrich MSDS] See "Hydrogen sulfide."

Exposure Assessment
Vapor Pressure

5.23E-7 mm Hg

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