Sourcing 1-Naphthol-4,8-disulfonic acid?
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Sourcing 1-Naphthol-4,8-disulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
1-Naphthol-4,8-disulfonic acid is a naphthol disulfonic acid compound used as an intermediate in the synthesis of dyes. Its structure features a naphthalene ring with hydroxyl and two sulfonic acid groups, contributing to its reactivity in dye manufacturing.
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.
The international HS code for 1-Naphthol-4,8-disulfonic acid (CAS 117-56-6) is 2908.99.
2908.99
2908 99 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-hydroxynaphthalene-1,5-disulfonic acid
XIQKALDENTUXBY-UHFFFAOYSA-N
C1=CC2=C(C=CC(=C2C(=C1)S(=O)(=O)O)O)S(=O)(=O)O