Technical Grade P4S3 Powder from Mexico
Technical grade phosphorus trisulfide (P4S3) powder is an industrial chemical for producing organic phosphorus compounds and as a reducing agent in metallurgy. Classified under HTS 2813.90.20.00 as 'of phosphorus' in the commercial phosphorus trisulfide subheading, it qualifies as a nonmetal sulfide per Chapter 28 exclusions and notes.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Declare exact CAS number (1314-85-2) and phosphorus content on commercial invoice; use DOT-approved drums for transport
• Pitfall: Incorrectly labeling as 'match striker' shifts it to consumer goods