Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanide
Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams: > Chemically defined: > Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanide
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2852.10.10.00
Yellow Mercuric Oxide Powder
Yellow mercuric oxide (HgO) is a chemically defined inorganic compound of mercury used primarily in the production of mercury batteries and as a chemical reagent. It falls under HTS 2852.10.10.00 as it is explicitly listed as mercuric oxide, meeting the 'chemically defined' criteria per subheading note for Chapter 28. This bright yellow powder is handled with extreme care due to its toxicity.
Red Mercuric Oxide Crystals
Red mercuric oxide (HgO) in crystalline form serves as an analytical reagent and pigment precursor in specialized applications. Classified under HTS 2852.10.10.00 as mercuric oxide, a chemically defined mercury compound per Chapter 28 notes. The red variant differs from yellow in crystal structure but shares identical chemical composition.
Mercuric Cyanide Laboratory Grade
Mercuric cyanide (Hg(CN)2) is a highly toxic white crystalline compound used in gold mining extraction and organic synthesis. It qualifies for HTS 2852.10.10.00 as a chemically defined mercury compound explicitly named in the subheading. Strict handling protocols are required due to its extreme poison hazard.
Mercuric Oxycyanide Reagent
Mercuric oxycyanide (Hg(CN)2·HgO) serves as a specialized reagent in qualitative analysis and pharmaceutical intermediates. This compound is explicitly listed under HTS 2852.10.10.00 as a chemically defined mercury compound meeting Chapter 28 purity standards. Its dual oxide-cyanide structure requires precise compositional verification.
Mercuric Potassium Cyanide Crystals
Mercuric potassium cyanide (K2[Hg(CN)4]) is used in electroplating baths and as an intermediate in heavy metal separations. Explicitly named in HTS 2852.10.10.00 as a chemically defined complex cyanide of mercury and potassium. The double salt structure distinguishes it from simple mercuric cyanide.
Pharmaceutical Grade Mercuric Oxide
High-purity mercuric oxide meeting USP standards for use in ophthalmic preparations and antiseptics. Still classified under HTS 2852.10.10.00 as the pure chemical compound despite pharmaceutical end-use. Purity exceeds 99.5% with controlled particle size for medical applications.
Mercuric Cyanide Gold Extraction Grade
Technical grade mercuric cyanide optimized for amalgamation processes in small-scale gold recovery. Meets HTS 2852.10.10.00 chemically defined criteria despite industrial impurities <1%. Supplied in sealed drums for mining operations.