Safety Reference
Warning
H317May cause an allergic skin reaction
Sourcing this compound?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Acid Blue 324
Acid dye for textiles
Sourcing this compound?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
This compound is a pyrazolone dye intermediate featuring a chlorinated aromatic ring and a sulfonic acid group. It is primarily used 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 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid (CAS 88-76-6) is 2933.19.
2933.19
2933 19 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-chloro-3-(3-methyl-5-oxo-4H-pyrazol-1-yl)benzenesulfonic acid
UWLNKHDLVZEYKQ-UHFFFAOYSA-N
CC1=NN(C(=O)C1)C2=C(C=CC(=C2)S(=O)(=O)O)Cl
—