Agent Name


Alternative Name

C.I. Solvent Orange 3

CAS Number




Major Category



C.I. Solvent Orange 3; 2,4-Diaminoazobenzene hydrochloride; 4-(Phenylazo)-1,3-benzenediamine, monohydrochloride; 4-(Phenylazo)-1,3-phenylenediamine, monohydrochloride; 4-(Phenylazo)-m-phenylenediamine, monohydrochloride; 4-Phenylazo-m-phenylenediamine hydrochloride; Astra Chrysoidine R; Atlantic Chrysoidine Y; Basic Orange 2; Basonyl Orange 200; Brasilazina Orange Y; Brilliant Oil Orange Y Base; C.I. 11270; C.I. Basic Orange 2; C.I. Basic Orange 2, monohydrochloride; C.I. Basic Orange 3; CI 11270; Calcozine Chrysoidine Y; Calcozine Orange YS; Chrysoidin; Chrysoidin FB; Chrysoidin Y; Chrysoidin YN; Chrysoidine (II); Chrysoidine A; Chrysoidine B; Chrysoidine C Crystals; Chrysoidine Crystals; Chrysoidine G; Chrysoidine GN; Chrysoidine GS; Chrysoidine HR; Chrysoidine J; Chrysoidine M; Chrysoidine Orange; Chrysoidine PRL; Chrysoidine PRR; Chrysoidine SL; Chrysoidine SS; Chrysoidine Y; Chrysoidine Y Crystals; Chrysoidine Y EX; Chrysoidine Y Special; Chrysoidine YGH; Chrysoidine YL; Chrysoidine YN; Chrysoidine Special (biological stain and indicator); Chrysoidine(II); Chryzoidyna F.B. [Polish]; Diazocard Chrysoidine G; Elcozine Chrysoidine Y; Leather Orange HR; Nippon Kagaku Chrysoidine; Pure Chrysoidine YBH; Pure Chrysoidine YD; Pyracryl Orange Y; Sugai Chrysoidine; Tertrophene Brown CG; Verona Chrysoidine GN; m-Phenylenediamine, 4-(phenylazo)-, hydrochloride; m-Phenylenediamine, 4-(phenylazo)-, monohydrochloride; [ChemIDplus]


Azo Dyes


Reddish-brown solid; [HSDB] Deep red powder; [MSDSonline]


Used to dye silk, cotton, varnish, printing inks, chromed leather, and cellulose-ester plastics; Also used as a biological stain and as a dye in oils, fats, and waxes for polishes; [HSDB]


Harmful by inhalation, ingestion, and skin absorption; [CAMEO] May cause irritation; Causes bladder injury in animal experiments; [MSDSonline]

Exposure Assessment
Vapor Pressure

1.52E-6 mm Hg

Adverse Effects
IARC Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

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Biomedical References

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Related Information in HazMap

Industrial Processes with risk of exposure: