Mercuric Tungsten Chloride from China
Mercuric tungsten chloride serves as a reference standard in analytical chemistry for XRF calibration. As a chemically defined mixed metal chloride, it falls under HTS 2827.39.40.00 for tungsten chlorides. Supplied in sealed ampoules.
Duty Rate — China → United States
18%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Mercury content declaration per Toxic Substances Control Act; NIST-traceable certificate required; special waste handling protocols