Direct Black 80

直接黑80

Also known as: C.I. Direct Black 80, Direct Black 80 (C.I. 31600), Black OB, trisodium 6-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3-[[4-[[4-amino-6(or 7)-sulphonatonaphthyl]azo]phenyl]azo]-4-hydroxynaphthalene-2-sulphonate, 2-Naphthalenesulfonic acid, 6-[(7-amino-1-hydroxy-3-sulfo-2-naphthlenyl)azo]-3-[[4-[[4-amino-6(or7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy, trisodium salt, trisodium,(3Z)-6-amino-3-[[(7Z)-7-[[4-[(4-amino-7-sulfonatonaphthalen-1-yl)diazenyl]phenyl]hydrazinylidene]-8-oxo-6-sulfonatonaphthalen-2-yl]hydrazinylidene]-4-oxonaphthalene-2-sulfonate

Direct Black 80 (CAS 8003-69-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C36H23N8Na3O11S3 and a molecular weight of 908.77900 g/mol. It is also known as C.I. Direct Black 80, Direct Black 80 (C.I. 31600) and Black OB. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

8003-69-8

Jingsj CID

J-1503781-5

Molecular Formula

C₃₆H₂₃N₈Na₃O₁₁S₃

Chinese Name

直接黑80

Molecular Weight

908.77900 g/mol

Category

Organic Compounds

Last updated

8/21/2026