p-Aminoazobenzene
Agent Name
p-Aminoazobenzene
Alternative Name
Aniline Yellow
CAS Number
60-09-3
Formula
C12-H11-N3
Major Category
Dyes
Synonyms
Aniline Yellow; 4-(Phenylazo)aniline; 4-(Phenylazo)benzenamine; 4-Amino-1,1'-azobenzene; 4-Aminoazobenzene; 4-Aminoazobenzol; 4-Benzeneazoaniline; Aminoazobenzene; Aminoazobenzene (indicator); Aniline Yellow (VAN); Aniline, p-(phenylazo)-; Azobenzene, 4-amino-; Benzenamine, 4-(phenylazo)-; Brasilazina Oil Yellow G; C.I. 11000; C.I. Solvent Blue 7; C.I. Solvent Yellow 1; CI 11000; CI Solvent Yellow 1; Cellitazol R; Ceres Yellow R; Fast Spirit Yellow; Fast Spirit Yellow AAB; Fat Yellow AAB; Induline R; Oil Yellow 2G; Oil Yellow AAB; Oil Yellow AB; Oil Yellow AB (VAN); Oil Yellow AN; Oil Yellow B; Oil Yellow R; Oil soluble Aniline Yellow; Oil-Sol. Aniline Yellow; Organol Yellow; Organol Yellow 2A; Paraphenolazo aniline; Solvent Yellow 1; Somalia Yellow 2G; Stearix Brown 4R; Sudan Yellow R; Sudan Yellow RA; Zlut anilinova [Czech]; Zlut rozpoustedlova 1 [Czech]; p-(Phenolazo)aniline; p-(Phenylazo)aniline; p-Aminoazobenzol; p-Aminodiphenylimide; p-Phenylazonaniline; p-Phenylazophenylamine; [ChemIDplus]
Category
Azo Dyes
Description
Brownish-yellow solid with a bluish tint; [Merck Index] Yellow to tan or orange solid; [HSDB] Brown-yellow crystals; [MSDSonline]
Sources/Uses
Used as a dye for lacquers, varnishes, wax products, oil stains, and styrene resins; Also used to make Acid Yellow, diazo dyes, and indulines; [HSDB] Used as an insecticide; [Hawley] Found in some semi-permanent hair dyes; [Kanerva, p. 1748]
Comments
A skin sensitizer, based on human patch test studies; [HSDB] May cause methemoglobinemia and skin sensitization. May be fatal by inhalation, ingestion, or skin absorption; [CAMEO] An eye irritant; Targets the liver; [MSDSonline] In a series of patients, about 30% of hairdressers with hand dermatitis had positive patch tests to p-Aminoazobenzene. [Kanerva, p. 1748]
Biomedical References
Exposure Assessment
Vapor Pressure
1.4E-06 mm Hg
Adverse Effects
Skin Sensitizer
Yes
Methemoglobinemia
MetHgb is secondary toxic effect
Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
IARC Carcinogen
Possible (2b)
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: