Silicon Phosphide
Silicon phosphide acts as a precursor for chemical vapor deposition in microelectronics and doping agent for n-type semiconductors. Classified as a nonmetal phosphide under HTS 2853.90.50.00 per subheading 'of other metals or nonmetals'. Meets Chapter 28 chemical definition requirements.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphorus content <1% as silicon dopant
Low-level doped silicon remains elemental silicon classification.
If organophosphine derivatives from silicon phosphide
Organic phosphorus compounds derived from phosphidation fall in Chapter 29.
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Import Tips & Compliance
• Provide CVD process compatibility certificates; ensure <1000ppm oxygen contamination
• Classify as UN3464 for air shipment (toxic, flammable solid)
Related Products under HTS 2853.90.50.00
Aluminum Phosphide
Aluminum phosphide is a chemically defined inorganic compound used primarily as a fumigant in agriculture to control pests in stored grains. It falls under HTS 2853.90.50.00 as a phosphide of a metal other than iron, excluded from ferrophosphorous classifications. This solid compound reacts with moisture to release phosphine gas.
Cadmium Phosphide
Cadmium phosphide serves as a II-V semiconductor material for infrared detectors and photovoltaics. This chemically defined phosphide of other metals falls under HTS 2853.90.50.00, distinct from organic or alloy forms. Its band gap properties suit optoelectronic applications.
Barium Phosphide
Barium phosphide finds application in specialty alloys and as a reducing agent in extractive metallurgy. This metal phosphide qualifies for HTS 2853.90.50.00 as chemically defined, excluding ferrophosphorous and copper-specific notes. Highly reactive with water.
Zinc Phosphide
Zinc phosphide is a dark gray powder phosphide compound employed as a rodenticide for controlling rodents in agricultural and urban settings. Classified in HTS 2853.90.50.00 as a phosphide of other metals, it generates toxic phosphine gas upon contact with stomach acid. This makes it effective for pest control applications.
Calcium Phosphide
Calcium phosphide serves as a phosphide for generating phosphine gas in life-saving pyrotechnic signal flares and smoke generators. It is classified under HTS 2853.90.50.00 as a phosphide of other metals, chemically defined per Chapter 28 notes. This reactive compound is used in emergency signaling devices.
Magnesium Phosphide
Magnesium phosphide is utilized in industrial pyrotechnics and as a phosphine generator for fumigation tablets. This HTS 2853.90.50.00 product is a phosphide of other metals, meeting chemical definition criteria excluding ferrophosphorous. It offers high reactivity for gas generation applications.