ChemAbout
© 2026 ChemAbout
Insights|Privacy Policy|Terms of Service|[email protected]
Home/Compounds/Dye & Pigment/Direct red 81
C29H19N5Na2O8S2
675.6 g/mol
Dye & Pigment

C.I. Direct Red 81 disodium salt

CAS2610-11-9EC220-028-9
Category
Dye & Pigment
Compound Class
Other
Primary Use
direct dye for textiles

C. I.

direct dye for textileshistological dye for trichrome stainingfluorochrome

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

Sourcing or supplying this compound?

List your inventory or post a purchase request

CAS 2610-11-9

List This Product
Sign in to publish supply information
Request This Product
Submit a request without registering

Related Compounds

SimilarStructure SimilarSimilarity 0.77

Direct Orange S

CAS3626-36-6

Direct dye for textiles

SimilarStructure SimilarSimilarity 0.73

Direct Red 31

CAS5001-72-9

Direct dye for textiles

ApplicationSame Use

Direct red 23

CAS3441-14-3

direct dye for textiles

ApplicationSame Use

Direct violet 9

CAS6227-14-1

direct dye for textiles

ApplicationSame Use

Direct yellow 50

CAS3214-47-9

direct dye for textiles

ApplicationSame Use

Direct blue 71

CAS4399-55-7

direct dye for textiles

ReferenceSame Category

(E)-N,N-Dimethyl-4-(thiazol-2-yldiazenyl)aniline

CAS267417-54-9

Azo dye intermediate

ReferenceSame Category

2-Methyinaphtho[1,2-d]thiazole

CAS2682-45-3

Dye intermediate

Identifiers
IUPAC Name

disodium;7-benzamido-4-hydroxy-3-[[4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalene-2-sulfonate

InChIKey

UFUQRRYHIHJMPB-UHFFFAOYSA-L

SMILES

C1=CC=C(C=C1)C(=O)NC2=CC3=CC(=C(C(=C3C=C2)O)N=NC4=CC=C(C=C4)N=NC5=CC=C(C=C5)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Synonyms (75)
  • Airedale Red KD
  • Aizen Primula Red 4BH
  • Amanil Fast Red 8BL
  • Amanil Fast Red 8BLW
  • Belamine Fast Red 8BL
  • Benzanil Fast Red K
  • Benzo Fast Red 8BL
  • Bordeaux EMBL
  • C.I. Direct Red 81
  • C.I. Direct Red 81 (VAN)
  • Calcodur Red 8BL
  • Chloramine Fast Red 5BL
  • Chloramine Fast Red K
  • Chlorantine Fast Red
  • Chlorantine Fast Red 5B
  • Chloroantine fast red 5B
  • Chrome Leather Red 5B
  • DIRECT RED 81
  • DR 81
  • Dialuminous Red 4B
  • Diaphtamine Light Red 4B
  • Diazine Fast Red 8BK
  • Diazo Light Red 8B
  • Diazo Light Red 8BD
  • Diazol Light Red 8B
  • Diphenyl Fast 5BL Supra I Red
  • Diphenyl Fast Red 5BL
  • Diphenyl Fast Red 5BLN
  • Direct Fast Red 2S
  • Direct Fast Red 5B
  • Direct Fast Red 8BL
  • Direct Light Red 4B
  • Direct Light Red 8B
  • Direct Light Red M 8BL
  • Direct Lightfast Red 2S
  • Direct Red 81, Dye content
  • Direct red y81
  • Durazol Red 2B
  • Durazol Red 2BP
  • Eliamina Red 8BL
  • Fastolite Red 8BL
  • Fastusol Red 4BA-CF
  • Fenaluz Red 4B
  • Helion Red 8B
  • Hispaluz Red 8BL
  • Japan Red No. 505
  • Paranol Fast Red 8BL
  • Pheno Fast Scarlet 9B
  • Pontamine Fast Red 8BLX
  • Pyrazol Fast Red 5BL
  • Pyrazol Fast Red 8BL
  • Pyrazoline Red 8BL
  • SIRIUS SUPRA RED 4B
  • Saturn Red B
  • Sirius Red 4B
  • Sirius Red 4BA
  • Solaminrot 4B
  • Solantine Red 8BL
  • Solar Red B
  • Solius Red 4B
  • Sumilight Red 4B
  • Suprazo Red 4B
  • Suprexcel Red 8BL
  • Tertrodirect Fast Red 5B
  • Tetramine Fast Red 8B
  • Triantine Fast Red 4BN
  • Triantine Light Red 4BN