Direct Blue 218

Synonyms

(3,3'-((3,3'-Dihydroxy-1,1'-biphenyl-4,4'-diyl)bis(azo)bis(5-amino-2,7-naphthalenedisulfonato-(O4,O3)))dicopper, tetrasodium salt; 2,7-Naphthalenedisulfonic acid, 3,3'((3,3'-dihydroxy(1,1'-biphenyl)-4,4'-diyl)bis(azo)bis(5-amino-4-hydroxy-, sodium salt, copper complex; Amanil Supra Blue 9GL; C.I. 24401; C.I. Direct Blue 218; CI Direct Blue 218; Copper, (mu-((tetrahydrogen 3,3'-((3,3'-dihydroxy-4,4'-biphenylene)bis(azo))bis(5-amino-4-hydroxy-2,7-naphthalenedisulfonato))(4-)))di-, tetrasodium salt; Cuprate(4-) (mu-((3,3'-((3,3'-dihydroxy(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(5-amino-4-hydroxy-2,7-naphthalenedisulfonato))(8-)))di-, tetrasodium; Cuprate(4-), (mu-((3,3'-((3,3'-dihydroxy(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis-(5-amino-4-hydroxy-2,7-naphthalenedisulfonato))(8-)))di-, tetrasodium salt; Fastusol Blue 9GLP; Pontamine Bond Blue B; Pontamine Fast Blue 7GLN; Solantine Blue 10GL; [ChemIDplus]

Category

Benzidine Dyes

Description

Deep purple to dark blue solid; [CAMEO]

Sources/Uses

Used as dye for cellulose, acetate, nylon, silk, wool, tissue, fine papers, and textile goods with a urea-formaldehyde finish; [HSDB]

Comments

One of the azo dyes metabolized to o-dianisidine--reasonably anticipated to be a human carcinogen; [NTP] May cause skin sensitization; [CAMEO] No results for the search: (("Direct Blue 218") OR 28407-37-6[EC/RN Number]) AND "Dermatitis, Allergic Contact"[Mesh]; [PubMed]

Biomedical References

Possible (2b)

Anticipated human carcinogen

Processes

Industrial Processes with risk of exposure:

• Pulp and Paper Processing
• Textiles (Printing, Dyeing, or Finishing)