p-Toluenesulfonylhydrazide from Canada
p-Toluenesulfonylhydrazide (TSH) is an aromatic sulfonyl hydrazide with a tosyl group attached to hydrazine. Classified in HTS 2928.00.25.00 as an aromatic hydrazine derivative; sulfonated forms remain here unless organo-sulfur dominates per notes. Widely used as a foaming agent in plastics.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Classify as UN 2860 hazardous for air/sea transport
• Provide decomposition temperature data for storage declarations
• Distinguish from pure organo-sulfur by hydrazine parent structure