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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as a metal phosphide like copper phosphide
Heading 2853 covers copper phosphide with >15% phosphorus, but nonmetal sulfides like P4S3 remain in 2813; misclassification occurs if mistaken for metal derivatives.
If mixed with organic stabilizers for retail sale
Chapter notes exclude stabilized preparations put up for retail; such mixtures shift to 3824 as chemical preparations rather than chemically defined sulfides.
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Import Tips & Compliance
• Obtain proper hazardous material certification (UN#1341) and ensure packaging meets UN-approved drums; verify commercial grade purity >95% to avoid reclassification; include Material Safety Data Sheets (MSDS) detailing phosphine and H2S risks
Related Products under HTS 2813.90.50.00
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.
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.
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.