C22H14N4Na2O7S2
556.5 g/mol
Dye & PigmentWarning
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(phenylazo)phenyl)azo)-, disodium salt
CAS5413-75-2EC226-502-1
Category
Dye & Pigment
Compound Class
Organic Acid
Primary Use
Acid dye for textiles and histology
This compound is an acid dye used for coloring textiles and in histology for staining biological tissues. It is characterized by its azo structure and sulfonate groups, which confer water solubility and affinity for fibers and proteins.
Textile dyeingHistological staining
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 this compound?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Related Compounds
StrongStructure SimilarSimilarity 0.98
Orange G
CAS1936-15-8
Acid dye for wool and silk
ReferenceSame Category
Bismark brown r
CAS5421-66-9
Basic dye for textile coloring
ReferenceSame Category
2-(4-(dibutylamino)-2-hydroxybenzoyl)benzoic acid
CAS54574-82-2
Intermediates for thermal and pressure sensitive dyes
ReferenceSame Category
8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate
CAS5460-09-3
Dye intermediate for azo dyes
ReferenceSame Category
Pigment Yellow 14
CAS5468-75-7
Organic pigment for plastics and inks
Referencesame scaffold
Acid Red 151
CAS6406-56-0
synthetic acid dye
Referencesame scaffold
Sudan III
CAS85-86-9
Biological stain and histological dye
Referencesame scaffold
Oil Red O
CAS1320-06-5
Histological dye for triglycerides
Safety Reference
Warning
H319Causes serious eye irritation
H351Suspected of causing cancer
Customs Tariff Classification
The international HS code for 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(phenylazo)phenyl)azo)-, disodium salt (CAS 5413-75-2) is 2927.00.
HS code (international, 6-digit)
2927.00
EU CN code (8-digit)
2927 00 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
disodium;7-hydroxy-8-[(4-phenyldiazenylphenyl)diazenyl]naphthalene-1,3-disulfonate
InChIKey
PEAGNRWWSMMRPZ-UHFFFAOYSA-L
SMILES
C1=CC=C(C=C1)N=NC2=CC=C(C=C2)N=NC3=C(C=CC4=CC(=CC(=C43)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+]
Synonyms (18)
- ACID RED 73
- Brilliant Crocein MOO
- Brilliant Croceine MOO
- Brilliant Scarlet R (VAN)
- Brilliant crocein
- Brilliantcroceine
- C.I. Acid Red 73
- Crocein Scarlet 3B
- Crocein Scarlet MOO
- SOLVENT RED 69
- Woodstain Scarlet
Sourcing this compound?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.