Other
Phosphides, whether or not chemically defined, excluding ferrophosphorus; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals. > Other > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2853.90.00
Aluminum Phosphide
> Aluminum phosphide is a chemically defined inorganic compound used primarily as a fumigant in agriculture to control pests in stored grains. As a phosphide of a metal other than iron, it is classified under heading 28.53, specifically this tariff item for other phosphides.
Barium Phosphide
> Barium phosphide is a chemically defined metal phosphide used in specialty alloys and as a reducing agent in extractive metallurgy. As a phosphide of a metal other than iron, it is classified under heading 28.53, falling under this tariff item for other phosphides.
Cadmium Phosphide
> Cadmium phosphide is a chemically defined phosphide used as a II-V semiconductor material for infrared detectors and photovoltaics. As a phosphide of a metal other than iron, it is classified under heading 28.53, specifically this tariff item for other phosphides.
Calcium Phosphide
> Calcium phosphide is a chemically defined phosphide used to generate phosphine gas in pyrotechnic signal flares and smoke generators. As a phosphide of a metal other than iron, it is classified under heading 28.53, falling under this tariff item for other phosphides.
Compressed Air Cylinders
> High-pressure compressed atmospheric air in cylinders for pneumatic tools is explicitly covered by heading 28.53 as 'compressed air'. This tariff item includes compressed air, whether or not rare gases have been removed, making it classifiable under this item.
Conductivity Water ASTM Type I
> ASTM Type I conductivity water with resistivity greater than 18 MΩ·cm is specifically named in heading 28.53 as 'water of similar purity'. This ultra-pure water is used for semiconductor rinsing and falls under this tariff item.
Cu92P11 Phosphor Copper Waffle Ingots
> High-phosphorus variants of Cu92P11 phosphor copper, supplied as waffle-shaped ingots, contain more than 15% phosphorus by weight. Under Chapter Note 7 of the Customs Tariff, copper phosphide with over 15% phosphorus is explicitly included in heading 28.53, making these ingots classifiable under this tariff item.
High-Phosphorus Phosphor Copper CuP15
> CuP15 grade phosphor copper is a chemically defined phosphide with over 15% phosphorus content, used as a deoxidizer in copper and bronze casting. Chapter Note 7 explicitly includes copper phosphide with more than 15% phosphorus in heading 28.53, so this product falls under this tariff item.
High Purity CuP Phosphor Copper for Brazing
> High-purity CuP phosphor copper with more than 15% phosphorus, supplied in cut wire or coarse powder, is used in silver brazing alloy production. As a copper phosphide exceeding 15% phosphorus, it is classified under heading 28.53 per Chapter Note 7.
Industrial Grade Copper Phosphide Cu3P2 Pellets
> Industrial grade copper phosphide (Cu3P2) pellets have a stoichiometry yielding more than 15% phosphorus by weight, used in chemical synthesis and high-performance alloys. Chapter Note 7 places copper phosphide with over 15% phosphorus in heading 28.53, making this product classifiable under this tariff item.
Magnesium Phosphide
> Magnesium phosphide is a chemically defined phosphide used in industrial pyrotechnics and as a phosphine generator for fumigation tablets. As a phosphide of a metal other than iron, it is classified under heading 28.53, specifically this tariff item for other phosphides.
Phosphor Copper Deoxidizer Shot P20Cu80
> P20Cu80 phosphor copper shot contains 20% phosphorus and 80% copper, cast into small spherical pellets for precise addition in aluminum bronze and brass production. With phosphorus content exceeding 15%, it qualifies as copper phosphide under Chapter Note 7 and is classified in heading 28.53.
Phosphor Copper Master Alloy P18Cu82 Granules
> Granular phosphor copper P18Cu82 with 18% phosphorus content is used for granular feed in continuous casting operations of copper alloys. As a copper phosphide with over 15% phosphorus, it is explicitly included in heading 28.53 by Chapter Note 7.
Silicon Phosphide
> Silicon phosphide is a nonmetal phosphide used as a precursor for chemical vapor deposition in microelectronics and as a doping agent for n-type semiconductors. As a phosphide, it is classified under heading 28.53, falling under this tariff item for other phosphides.
Zinc Phosphide
> Zinc phosphide is a dark gray powder phosphide compound employed as a rodenticide for controlling rodents in agricultural and urban settings. As a phosphide of a metal other than iron, it is classified under heading 28.53, specifically this tariff item for other phosphides.