Red 2G is a synthetic red azo dye. It is soluble in water and slightly soluble in glycerol, and typically exists as the disodium salt of 8-acetamido-1-hydroxy-2-phenylazonaphthalene-3,6-disulfonate.
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.
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Coumarin 6
fluorescent solvent dye
Xanthylium, 3,6-bis(diethylamino)-9-[2-(methoxycarbonyl)phenyl]-, chloride (1:1)
Fluorescent dye
Sodium 1,3-dimethyl 5-sulfoisophthalate
sulfonate monomer for polyester dye
Fluorescent Brightener 378
Fluorescent brightener
Aluminum, tris[5-amino-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonato(2-)]di-
aluminum lake pigment
D&C Red 33
Red azo dye for cosmetics
Spadns
chromogenic indicator for metal and fluoride ions
Reactive Violet 5
Reactive dye for textile coloring
The international HS code for Red 2G (CAS 3734-67-6) 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;5-acetamido-4-hydroxy-3-phenyldiazenylnaphthalene-2,7-disulfonate
WXLFIFHRGFOVCD-UHFFFAOYSA-L
CC(=O)NC1=C2C(=CC(=C1)S(=O)(=O)[O-])C=C(C(=C2O)N=NC3=CC=CC=C3)S(=O)(=O)[O-].[Na+].[Na+]
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