Phosphorus
Hydrogen, rare gases and other non-metals. > Silicon: > Phosphorus > Phosphorus
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Products classified under Tariff item 2804.70.00.00
Amorphous Red Phosphorus for Pyrotechnics
Amorphous red phosphorus powder, a chemically defined elemental non-metal, is used in pyrotechnic compositions for fireworks and signal flares. It meets Chapter 28's definition of separate chemical elements and is not excluded by any legal note.
2804.70.00Elemental Phosphorus for Organic Synthesis
Distilled elemental phosphorus, a chemically defined non-metal, is used as a reagent in organic synthesis to produce phosphonium salts. It is classifiable under heading 28.04 as a separate chemical element, per Chapter 28 Note 1(a).
2804.70.00Ferrophosphorus Alloy (Elemental Phosphorus Content)
Ferrophosphorus is an alloy of iron and phosphorus (18-28% phosphorus), used as a deoxidizer in steel production. Although it contains elemental phosphorus, it is a metal alloy of Section XV and is excluded from Chapter 28 by Note 3(g).
2804.70.00High-Purity Phosphorus for Semiconductor Doping
High-purity elemental phosphorus in unworked forms (gas or liquid) for semiconductor doping. It is a separate chemical element per Chapter 28 Note 1(a) and Note 8, as it is not yet cut into discs or wafers.
2804.70.00Phosphorus Granules for Fertilizer Production
Elemental phosphorus granules used as an intermediate for phosphoric acid production in fertilizers. It is uncompounded elemental phosphorus, classifiable under heading 28.04, and not excluded by Chapter 28 notes.
2804.70.00Red Phosphorus Powder
Red phosphorus powder, an allotropic form of elemental phosphorus, is used in safety matches and flame retardants. It is a separate chemical element under Chapter 28 Note 1(a), with no exclusions applying.
2804.70.00White Phosphorus (Yellow Phosphorus)
White (yellow) phosphorus, a waxy, highly reactive elemental form stored under water, is used in military applications and chemical synthesis. It is a separate chemical element per Chapter 28 Note 1(a), and its storage in water is a normal safety method.