Safety Reference
Danger
H318Causes serious eye damage
H319Causes serious eye irritation
Sourcing Aniline-2,4-disulfonic acid?
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2,4-dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one
intermediate for dyes and pigments
Sourcing Aniline-2,4-disulfonic acid?
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This compound is an aromatic amine disulfonic acid used primarily as an intermediate in the synthesis of dyes and pigments.
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 Aniline-2,4-disulfonic acid (CAS 137-51-9) is 2921.42.
2921.42
2921 42 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-aminobenzene-1,3-disulfonic acid
IMUUNYPYNWXUBO-UHFFFAOYSA-N
C1=CC(=C(C=C1S(=O)(=O)O)S(=O)(=O)O)N