Agent Name

Methyl red sodium salt

CAS Number

845-10-3

Formula

C15-H15-N3-O2.Na

Major Category

Dyes

Synonyms

Methyl Red sodium; Sodium methyl red; Benzoic acid, 2-((4-(dimethylamino)phenyl)azo)-, sodium salt; Benzoic acid, 2-(2-(4-(dimethylamino)phenyl)diazenyl)-, sodium salt (1:1); Sodium 2-(p-(dimethylamino)phenylazo)benzoate; [ChemIDplus] Methyl Red, sodium salt; 2-(4-(Dimethylamino)phenylazo)benzoic acid, sodium salt; C.I. 13020; [Acros Organics MSDS]

Category

Azo Dyes

Description

Red-brown powder; [Acros Organics MSDS]

Sources/Uses

Used as a pH indicator, to make agar plates in bacteriology, and in food science; [Merck Index]

Comments

May cause irritation; Toxic by ingestion; [Acros Organics MSDS] See "Methyl red."

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