| Agent Name |
Methyl red |
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| CAS Number |
493-52-7 |
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| Formula |
C15-H15-N3-O2 |
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| Major Category |
Other Chemicals |
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| 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] |
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| Category |
Dyes, Azo |
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| Description |
Violet crystals; [Sax] |
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| Sources/Uses |
Used as a pH indicator for the pH range of 4.4-6.2; [Ullmann] |
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| Comments |
Animal testing inadequate; No human data; [IARC] May be toxic by ingestion and inhalation; May cause serious eye injury; [MSDSonline] |
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| Exposure Assessment |
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| Vapor Pressure |
1.44 x 10 -07 mm Hg |
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| Flammability (NFPA) |
1: must be preheated |
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| Adverse Effects |
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| IARC Carcinogen |
Not Classifiable |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: O-METHYL RED
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