Safety Reference
Warning
H319Causes serious eye irritation
Sourcing 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
7-Anilino-1-naphthol-3-sulfonic acid
dye intermediate
Sourcing 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid is an organic compound used as a dye intermediate in the production of azo dyes. It is characterized by a naphthalene ring system with sulfonic acid, hydroxyl, and phenylamino substituents.
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 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid (CAS 119-40-4) 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.
7-anilino-4-hydroxynaphthalene-2-sulfonic acid
YGNDWDUEMICDLW-UHFFFAOYSA-N
C1=CC=C(C=C1)NC2=CC3=CC(=CC(=C3C=C2)O)S(=O)(=O)O