2,5-Dichloro-4-(3-methyl-5-oxo-2-pyrazolin-1-yl) benzenesulfonic acid from United States
2,5-Dichloro-4-(3-methyl-5-oxo-2-pyrazolin-1-yl) benzenesulfonic acid is a complex aromatic pyrazolone featuring dichloro substitution and a sulfonic acid on a benzene ring linked to a pyrazoline structure. It is used as a dye intermediate. Its unfused pyrazole ring qualifies it for tariff item 2933.19.00.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the product is imported as a pure chemical compound, not in a formulation that could shift classification
• Have the technical data sheet and CAS number ready for CBSA
• Confirm whether the dye coupling use triggers any end-use or chemical import reporting requirements