Agent Name

o-Aminoazotoluene

CAS Number

97-56-3

Formula

C14-H15-N3

Major Category

Dyes

Synonyms

2',3-Dimethyl-4-aminoazobenzene; 2-Amino-5-azotoluene; 2-Methyl-4-((2-methylphenyl)azo)benzenamine; 2-Methyl-4-((o-tolyl)azo)aniline; 4'-Amino-2:3'-azotoluene; 4-(o-Tolylazo)-o-toluidine; 4-Amino-2',3-dimethylazobenzene; 5-(o-Tolylazo)-2-aminotoluene; Aminoazotoluene (indicator); Benzenamine, 2-methyl-4-((2-methylphenyl)azo)-; Brasilazina Oil Yellow R; Butter Yellow; C.I. 11160; C.I. 11160B; C.I. Solvent Yellow 3; CI 11160; CI 11160B; CI Solvent Yellow 3; Fast Garnet GBC Base; Fast Oil Yellow; Fast Yellow AT; Fat Yellow B; Hidaco Oil Yellow; OAAT; Oil Yellow 21; Oil Yellow 2681; Oil Yellow 2R; Oil Yellow AT; Oil Yellow C; Oil Yellow I; Organol Yellow 2T; Orthoaminoasotoluene; Orthoaminoasotoluol; Somalia Yellow R; Sudan Yellow RRA; Toluazotoluidine; Tulabase Fast Garnet GB; Tulabase Fast Garnet GBC; Waxakol Yellow NL; Zlut rozpoustedlova 3 [Czech]; o-AT; o-Amidoazotoluol [German]; o-Aminoazotoluene; o-Aminoazotolueno [Spanish]; o-Aminoazotoluol; o-Tolueneazo-o-toluidine; o-Toluidine, 4-(o-tolylazo)-; o-Toluol-azo-o-toluidin [German]; ortho-Tolueneazo-ortho-toluidine; ortho-Toluol-azo-ortho-toluidin [German]; [ChemIDplus]

Category

Azo Dyes

Description

Reddish-brown to golden solid; [HSDB]

Sources/Uses

Used to make dyes and as a dye for coloring oils, fats, and waxes; [HSDB]

Comments

May induce allergic skin reactions; [HSDB] Harmful by inhalation, ingestion, and skin absorption; [CAMEO] May cause skin sensitization; [eChemPortal: ESIS] An irritant; May cause skin sensitization; [MSDSonline] Danger of cutaneous absorption; Danger of skin sensitization; Suspected germ cell mutagen (3B); [MAK]

Exposure Assessment
Vapor Pressure

7.5E-7 mm Hg

Adverse Effects
Skin Sensitizer

Yes

IARC Carcinogen

Possible Carcinogen

NTP Carcinogen

Anticipated Human Carcinogen

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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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: