Sourcing Reactive Blue 81?
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Reactive dye for textile coloration
Sourcing Reactive Blue 81?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Reactive Blue 81 is a synthetic dye used for coloring textiles, particularly cellulose fibers like cotton. It forms a stable covalent bond with the fiber, resulting in durable and wash-fast coloration.
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 Reactive Blue 81 (CAS 75030-18-1) is 3204.16.
3204.16
3204 16 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
trisodium;6-[(4-anilino-3-sulfonatophenyl)diazenyl]-4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-5-oxido-7-sulfonaphthalene-2-sulfonate
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C1=CC=C(C=C1)NC2=C(C=C(C=C2)N=NC3=C(C4=C(C=C(C=C4C=C3S(=O)(=O)O)S(=O)(=O)[O-])NC5=NC(=NC(=N5)Cl)Cl)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]