Methyl Red
Agent Name
Methyl Red
CAS Number
493-52-7
Formula
C15-H15-N3-O2
Major Category
Dyes
Synonyms
2-((4-Dimethylamino)phenylazo)benzoic acid; 2-Carboxy-4'-(dimethylamino)azobenzene; 4'-Dimethylaminoazobenzene-2-carboxylic acid; 4-Dimethylamino-2'-carboxylazobenzene; Benzoic acid, 2-((4-dimethylamino)phenylazo)-; Benzoic acid, o-((p-(dimethylamino)phenyl)azo)-; C.I. 13020; C.I. Acid Red 2; CI 13020; CI Acid Red 2; Cerven kysela 2 [Czech]; Cerven methylova [Czech]; Dimethylaminoazobenzene-2-carboxylic acid; Methyl Red; o-((p-(Dimethylamino)phenyl)azo)benzoic acid; o-Methyl red; p-(Dimethylamino)azobenzene-o-carboxylic acid; 2-(4-Dimethylaminophenylazo)benzoic acid; [ChemIDplus]
Category
Azo Dyes
Description
Violet crystals; [Sax]
Sources/Uses
Used as a pH indicator for the pH range of 4.4-6.2; [Ullmann]
Comments
Animal testing inadequate; No human data; [IARC] May be toxic by ingestion and inhalation; May cause serious eye injury; [MSDSonline]
Biomedical References
Exposure Assessment
Vapor Pressure
1.44E-07 mm Hg
NFPA
must be preheated
Adverse Effects
IARC Carcinogen
Not classifiable
Diseases, Processes, and Activities Linked to This Agent
Other Information
No other related information on this agent was found.