High-Purity Benzenesulfonyl Chloride 99.5% for Pharma Intermediates from China
High-purity benzenesulfonyl chloride at 99.5% is a chemically defined sulfonated derivative of benzene, used in pharmaceutical synthesis of sulfonamide drugs like sulfamethoxazole. It contains only a sulpho group and its chloride form, meeting the scope of tariff item 2904.10.00. The purity level does not affect classification as long as it remains a separate chemically defined compound.
Duty Rate — China → Canada
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Import Tips
• Maintain documentation proving the chemical purity and identity for CBSA verification
• Check if the product is on the Canadian Importers List for controlled substances
• Ensure proper labeling for hazardous materials during transport