C10H6N2O4S
250.23 g/mol
Dye & PigmentDanger
1-Naphthalenediazonium, 2-hydroxy-4-sulfo-, inner salt
CAS887-76-3EC212-958-9
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Diazo dye intermediate
This compound is a diazonium inner salt derived from naphthalenesulfonic acid, commonly used as an intermediate in the production of diazo dyes.
Diazo dye intermediate
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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Pyrazolone dye intermediate
ReferenceSame Category
4-methyl-2-nitroaniline
CAS89-62-3
intermediate for dyes and pigments
ReferenceSame Category
4-chloro-2-nitroaniline
CAS89-63-4
Dye and pigment intermediate
Safety Reference
Danger
H228Flammable solid
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
Customs Tariff Classification
The international HS code for 1-Naphthalenediazonium, 2-hydroxy-4-sulfo-, inner salt (CAS 887-76-3) 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
4-diazonio-3-hydroxynaphthalene-1-sulfonate
InChIKey
QHIBNGIZPPHJAT-UHFFFAOYSA-N
SMILES
C1=CC=C2C(=C1)C(=CC(=C2[N+]#N)O)S(=O)(=O)[O-]
Synonyms (7)
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