Sourcing Indigo carmine?
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Sourcing Indigo carmine?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Indigo carmine is a synthetic food colouring dye that also functions as a pH indicator, changing from blue to yellow at pH 11. 5-14.
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 Indigo carmine (CAS 860-22-0) is 3204.12.
3204.12
3204 12 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
disodium;2-(3-hydroxy-5-sulfonato-1H-indol-2-yl)-3-oxoindole-5-sulfonate
JFVXEJADITYJHK-UHFFFAOYSA-L
C1=CC2=C(C=C1S(=O)(=O)[O-])C(=C(N2)C3=NC4=C(C3=O)C=C(C=C4)S(=O)(=O)[O-])O.[Na+].[Na+]