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
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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