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Phosphorus Sesquisulfide Flakes from Mexico

Phosphorus sesquisulfide flakes, synonymous with P4S3, are supplied in flake form for match manufacturing and pyrotechnics. This product is specifically 'of phosphorus' under HTS 2813.90.20.00, distinguishing it from carbon disulfide (2813.10) as a nonmetal sulfide.

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

Include flammability test certificates; segregate from oxidizers in shipping

Avoid pitfall of bulk packaging confusion with retail match components