Agent Name

C.I. Direct Blue 2

CAS Number

2429-73-4

Formula

C32-H24-N6-O11-S3.3Na

Major Category

Dyes

Synonyms

2,7-Naphthalenedisulfonic acid, 5-amino-3-((4'-((7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)(1,1'-biphenyl)-4-hydroxy-, trisodium salt; Airedale Black BHD; Aizen Direct Black BH; Altazine Black BH; Amanil Developed Black BHSW; Atul Developed Black BT; Azine Diazo Black BHK; Azocard Blue BH; Azomine Black BH; Belamine Diazo Black BH; Bencidal Navy Blue BH; Benzanil Black BH; Benzo Black Blue BH; Benzo Black Blue FBH; Blue BH; Brasilazol Black BG; Brasilazol Black BH; C.I. 22590; C.I. Direct Blue 2 (VAN); C.I. Direct Blue 2, trisodium salt; CI 22590; CI Direct Blue 2, trisodium salt; Calcoloid Diazo Black BHL; Calcomine Diazo Black BHD; Calcomine Diazo Black BTCW; Chloramine Black BH; Chlorazol Black BH; Chlorazol Leather Black BH; Chrome Leather Dark Blue BHM; Chrome Leather Black BH; Chrome Leather Black CR; Chrome Leather Black DS; Cutamin Dark Blue CB; Diacotton Black BH; Diamine Black BH; Diamine Black BHM; Diaminogene Velour Black B; Dianil Dark Blue H; Diaphtamine Black BH; Diazine Black BHC; Diazine Black H; Diazine Black HDW; Diazine Black HNJ; Diazo Black BH; Diazo Black BHN-CF; Diazo Black BHSW; Diazo Black BHSWK; Diazo Black CR; Diazo Direct Black N; Diazo Fast Black BH; Diazo Fast Black MBH; Diazo Navy Blue BH; Diazol Black BH; Diazophenyl Black BH; Diphenyl Blue Black GHS; Diphenyl Blue Black MBH; Direct Black BH; Direct Blue 2; Direct Blue Black BH; Direct Dark Blue BH; Direct Diazo Black; Direct Diazo Black C; Direct Diazo Black N; Direct Diazo Black S; Direct Navy Blue BH; Eniazol Blue Black BHN; Fenamin Navy Blue H; Fixanol Blue BH; Indoxine KL; Japanol Black BHK; Kayaku Direct Black BH; Melantherine BH; Melantherine BHX; Mitsui Direct Black BH; Navy Blue EHBL; Navy Blue EMBL; Neklamin Black BH; Paramine Black BH; Phenazo Black BH; Pheno Navy Blue; Pontamine Deep Blue BH; Pontamine Diazo Black BHSW; Pontamine Diazo Black BHid and BH; Symulon Direct Black BH; Tertrodirect Black BH; Tertrodirect Black BHS; Union Fast Navy Blue DS; Vondacel Dark Blue BH; Zambesi Dark Blue BH; [ChemIDplus]

Category

Benzidine Dyes

Description

Dark blue-black solid; [CAMEO]

Sources/Uses

Used as dye for cellulose fibers, leather, and paper; [HSDB]

Comments

One of the azo dyes metabolized to benzidine--known to be a human carcinogen; [NTP]

Adverse Effects
NTP Carcinogen

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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Biomedical References

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Processes

Industrial Processes with risk of exposure: