Phosphorus Trisulfide for Match Industry
Red phosphorus trisulfide specifically formulated for safety match production, providing the controlled ignition on striking surfaces. HTS 2813.90.50.00 covers this as commercial 'other' phosphorus trisulfide, a sulfide of nonmetals. It differs from red phosphorus (2804.40) by its sulfur content enabling lower ignition temperature.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If low-sulfur red phosphorus variant
Red phosphorus without significant sulfur is 2804.40; Chapter 28 notes place sulfur compounds in 2813.
If pre-mixed into safety match compositions
Safety matches as finished detonating preparations fall in 3603; pure chemical remains chemically defined in 2813.
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Import Tips & Compliance
• Comply with CPSC match safety standards FP 4013; ship as Class 4.1 flammable solid with phosphine suppressant; test for free phosphorus <0.1% to confirm classification
Related Products under HTS 2813.90.50.00
Commercial Phosphorus Trisulfide Powder
Commercial phosphorus trisulfide (P4S3) is a red to yellow crystalline powder used primarily in the manufacture of safety match striking surfaces and organic synthesis. It falls under HTS 2813.90.50.00 as 'other' sulfides of nonmetals, specifically classified as commercial phosphorus trisulfide distinct from pure forms. This inorganic compound reacts with moisture to release toxic hydrogen sulfide gas.
Technical Grade P4S3 Flakes
Technical grade phosphorus sesquisulfide (P4S3) in flake form serves as a key intermediate in pesticide and lubricant additive production. Classified under HTS 2813.90.50.00 as 'other' commercial phosphorus trisulfide, a nonmetal sulfide excluded from organic chapters. It is highly flammable and requires inert atmosphere storage.
Industrial Phosphorus Sesquisulfide Granules
Granular commercial P4S3 used in pyrotechnics and smoke composition manufacturing due to its controlled oxidation properties. Falls under HTS 2813.90.50.00 as 'other' sulfides of nonmetals—commercial phosphorus trisulfide. Particle size typically 1-3mm for safe handling.
High Purity P4S3 for Organic Synthesis
99% pure phosphorus trisulfide crystals employed as a thionating agent converting carbonyls to thiocarbonyls in pharmaceutical intermediates. HTS 2813.90.50.00 classifies it as commercial 'other' nonmetal sulfide. Excluded from Chapter 29 as purely inorganic per legal notes.
Commercial Grade Phosphorus Sulfide 1314-85-2
Bulk commercial phosphorus trisulfide (CAS 1314-85-2) in 25kg drums for chemical manufacturing, distinguished by commercial impurities from analytical grades. HTS 2813.90.50.00 as 'other' commercial phosphorus trisulfide sulfides of nonmetals. Yellow to red powder with characteristic odor.