Sourcing Sirius Red F3B?
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Direct Orange S
Direct dye for textiles
Sourcing Sirius Red F3B?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Sirius Red F3B is a direct dye used for coloring textiles, particularly cellulosic fibers like cotton. It is a complex, multi-sulfonated azo compound with a high molecular weight and six sodium counterions, typical of direct dyes designed for water solubility and direct application to fibers.
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 Sirius Red F3B (CAS 2610-10-8) is 3204.14.
3204.14
3204 14 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
hexasodium;4-hydroxy-7-[[5-hydroxy-7-sulfonato-6-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalen-2-yl]carbamoylamino]-3-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalene-2-sulfonate
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C1=CC(=CC=C1N=NC2=CC(=C(C=C2)N=NC3=C(C=C4C=C(C=CC4=C3O)NC(=O)NC5=CC6=CC(=C(C(=C6C=C5)O)N=NC7=C(C=C(C=C7)N=NC8=CC=C(C=C8)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]