High-Purity Phosphorus for Semiconductor Doping
Ultra-pure elemental phosphorus gas or liquid used for n-type doping in silicon wafers during semiconductor manufacturing. It qualifies for HTS 2804.70.00.00 as chemically defined elemental phosphorus in unworked form suitable for electronics.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If silicon doped with phosphorus as wafers
Doped chemical elements cut into wafers or discs shift from Chapter 28 to 3818.
If phosphine gas PH3
Phosphine is a compound classified under other inorganic compounds in 2853.
If diluted dopant source in ampoules
Prepared dopant mixtures are chemical preparations, not pure elements.
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Import Tips & Compliance
• Provide spectroscopic purity certificates (>99.999%) to confirm elemental status
• Comply with cleanroom handling requirements and ESD-safe packaging
• Check ITAR/EAR for dual-use semiconductor applications
Related Products under HTS 2804.70.00.00
Red Phosphorus Powder
Red phosphorus is an allotropic form of elemental phosphorus, appearing as a red powder, used primarily in the production of safety matches and flame retardants. It falls under HTS 2804.70.00.00 as it is chemically defined elemental phosphorus, a nonmetal classified in Chapter 28.
White Phosphorus (Yellow Phosphorus)
White phosphorus, also known as yellow phosphorus, is a waxy, poisonous, highly reactive form of elemental phosphorus stored under water. Used in military applications and chemical synthesis, it is classified under HTS 2804.70.00.00 as pure elemental phosphorus.
Phosphorus Granules for Fertilizer Production
Elemental phosphorus in granular form serves as an intermediate for producing phosphoric acid used in fertilizers. Classified under HTS 2804.70.00.00 as it is uncompounded elemental phosphorus, distinct from phosphorus compounds in Chapter 31.
Ferrophosphorus Alloy (Elemental Phosphorus Content)
Ferrophosphorus is an alloy containing 18-28% elemental phosphorus with iron, used as a deoxidizer in steel production. Primarily classified under HTS 2804.70.00.00 when imported emphasizing phosphorus content, though metal alloy aspects may influence.
Amorphous Red Phosphorus for Pyrotechnics
Amorphous red phosphorus powder specifically for pyrotechnic compositions in fireworks and signal flares. Falls under HTS 2804.70.00.00 as elemental phosphorus, meeting Chapter 28 definitions for nonmetal elements.
Elemental Phosphorus for Organic Synthesis
Distilled elemental phosphorus used as a reagent in organic chemical synthesis, such as for phosphonium salts. Classified in HTS 2804.70.00.00 as it remains chemically defined elemental nonmetal per Chapter 28 notes.