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Home/Compounds/Dye & Pigment/Direct Red 31
C32H21N5Na2O8S2
713.7 g/mol
Dye & Pigment

Direct Red 12B

CAS5001-72-9EC225-669-8
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Direct dye for textiles

Direct Red 12B is a disodium salt dye used as a direct dye for textile applications. It features an azo structure with multiple aromatic rings and sulfonate groups, contributing to its water solubility and affinity for fibers.

Dye for textilesDirect dye for cellulosic fibers

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.

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Related Compounds

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Direct red 23

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Direct red 81

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Direct Violet 51

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C.I. Direct Violet 35

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C.I. Direct Orange 108

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Sirius Red F3B

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Identifiers
IUPAC Name

disodium;4-hydroxy-7-[(5-hydroxy-6-phenyldiazenyl-7-sulfonatonaphthalen-2-yl)amino]-3-phenyldiazenylnaphthalene-2-sulfonate

InChIKey

OYUZMQYZGSMPII-UHFFFAOYSA-L

SMILES

C1=CC=C(C=C1)N=NC2=C(C=C3C=C(C=CC3=C2O)NC4=CC5=CC(=C(C(=C5C=C4)O)N=NC6=CC=CC=C6)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Synonyms (12)
  • C.I. Direct Red 31
  • DIRECT PINK 12B
  • Direct Red 12B
  • Direct Red 31
  • Direct Red 31, tech.