C34H26Cl2CrN8NaO8S2
884.6 g/mol
Dye & Pigment
Chromate(1-), bis(2-(3-chlorophenyl)-2,4-dihydro-4-((2-hydroxy-5-(methylsulfonyl)phenyl)azo)-5-methyl-3H-pyrazol-3-onato(2-))-, sodium
CAS51147-75-2EC257-014-7
Category
Dye & Pigment
Compound Class
Organometallic
Primary Use
Acid dye for textile applications
This compound is an acid dye used primarily for textile applications. It consists of a chromium complex with two azo-pyrazolone ligands and a sodium cation, giving it a salt-like structure with multiple aromatic rings and a halogen substituent.
Acid dye for textile dyeingColoring agent for protein fibers such as wool and silk
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
ReferenceSame Category
Ferric oxide yellow
CAS51274-00-1
yellow pigment for paints and coatings
ReferenceSame Category
4-nitro-m-phenylenediamine
CAS5131-58-8
disperse dye intermediate and hair colorant
ReferenceSame Category
4-chloro-m-phenylenediamine
CAS5131-60-2
Chemical intermediate for dyestuffs and pigments
ReferenceSame Category
Sodium sulfanilate
CAS515-74-2
chemical intermediate for dyes
Referencesame scaffold
Acid Orange 74
CAS10127-27-2
Azo dye for textiles
Referencesame scaffold
Acid Yellow 49
CAS12239-15-5
acid dye for textiles
Safety Reference
H411Toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for Chromate(1-), bis(2-(3-chlorophenyl)-2,4-dihydro-4-((2-hydroxy-5-(methylsulfonyl)phenyl)azo)-5-methyl-3H-pyrazol-3-onato(2-))-, sodium (CAS 51147-75-2) is 2933.19.
HS code (international, 6-digit)
2933.19
EU CN code (8-digit)
2933 19 90
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
sodium;bis(1-(3-chlorophenyl)-3-methyl-4-[(5-methylsulfonyl-2-oxidophenyl)diazenyl]pyrazol-5-olate);chromium(3+)
InChIKey
UWWIIBLEUDACLR-UHFFFAOYSA-J
SMILES
CC1=NN(C(=C1N=NC2=C(C=CC(=C2)S(=O)(=O)C)[O-])[O-])C3=CC(=CC=C3)Cl.CC1=NN(C(=C1N=NC2=C(C=CC(=C2)S(=O)(=O)C)[O-])[O-])C3=CC(=CC=C3)Cl.[Na+].[Cr+3]
Synonyms (4)
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