Sourcing 3-Hydroxynaphthalene-2,7-disulphonic acid?
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Copper perchlorophthalocyanine
green pigment for inks and coatings
Fluorescent brightener 393
optical brightener for fabrics and paper
Sourcing 3-Hydroxynaphthalene-2,7-disulphonic acid?
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3-Hydroxynaphthalene-2,7-disulphonic acid is a naphthalene sulfonic acid derivative used as an intermediate in the production of dyes and pigments. It is a solid compound characterized by its naphthalene ring system with sulfonic acid and hydroxyl functional groups.
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 3-Hydroxynaphthalene-2,7-disulphonic acid (CAS 148-75-4) 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.
3-hydroxynaphthalene-2,7-disulfonic acid
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