High-Purity Phosphorus for Semiconductor Doping from Mexico
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.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• 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