Copper Phosphide (Phosphor Copper) from Japan
Copper phosphide, also known as phosphor copper, is an inorganic compound containing more than 15% phosphorus by weight, used primarily as a deoxidizer and alloying additive in metallurgy. It falls under HTS 2853.90.90.90 as a phosphide explicitly included in heading 2853 per chapter notes. This chemically defined compound is imported in granular or powder form for industrial applications.
Duty Rate — Japan → United States
2.8%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Verify phosphorus content exceeds 15% to confirm classification under 2853; provide chemical analysis certificates
• Ensure proper hazardous material declarations if pyrophoric
• Avoid misclassification as copper alloys under Chapter 74