Sourcing Rhoduline Acid?
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intermediate for azo dyes
Sourcing Rhoduline Acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Rhoduline Acid is a sulfonated naphthalene derivative used as a dye intermediate. Its structure features two naphthalene rings linked by an amine bridge, with hydroxyl and sulfonic acid substituents that confer polarity and solubility.
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 Rhoduline Acid (CAS 87-03-6) is 2922.29.
2922.29
2922 29 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-hydroxy-7-[(5-hydroxy-7-sulfonaphthalen-2-yl)amino]naphthalene-2-sulfonic acid
BQVLLTHCZQAJNH-UHFFFAOYSA-N
C1=CC2=C(C=C(C=C2C=C1NC3=CC4=CC(=CC(=C4C=C3)O)S(=O)(=O)O)S(=O)(=O)O)O