Safety Reference
Danger
H318Causes serious eye damage
H410Very toxic to aquatic life with long lasting effects
H413May cause long lasting harmful effects to aquatic life
Sourcing Toluidine red?
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substantive dye for cotton
Malachite green oxalate (2:3)
Dye for textiles and biological stain
Sourcing Toluidine red?
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Toluidine red is an organic azo pigment with a dark red color, traditionally used in applications such as oil paints. Its structure consists of a 2-naphthol group linked to a 2-nitro-4-methylphenyl substituent.
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 Toluidine red (CAS 2425-85-6) is 3204.17.
3204.17
3204 17 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
1-[(4-methyl-2-nitrophenyl)diazenyl]naphthalen-2-ol
ZLFVRXUOSPRRKQ-UHFFFAOYSA-N
CC1=CC(=C(C=C1)N=NC2=C(C=CC3=CC=CC=C32)O)[N+](=O)[O-]