Mercuric Sulfate
Mercuric sulfate (HgSO4) is a toxic white powder used in analytical chemistry and gold extraction processes. Classified under HTS 2852.10.90.00 as a chemically defined inorganic mercury compound outside specific subheadings. Meets Chapter 28 Note 1 criteria for single mercury salt compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If regarded primarily as sulfate salt
Sulfates fall in 2833, but Chapter notes prioritize mercury compound classification over generic salt headings.
If for medicinal preparations containing it
Medicinal silver compounds are in 2843; analogous mercury meds might classify there if pharmaceutical form dominates.
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Import Tips & Compliance
• Comply with TSCA import certification for toxic substances; use UN-approved packaging for dangerous goods; provide Material Safety Data Sheets (MSDS) at customs
Related Products under HTS 2852.10.90.00
Mercuric Chloride
Mercuric chloride (HgCl2), also known as corrosive sublimate, is a white crystalline inorganic compound of mercury used in laboratory reagents and as a fungicide. It falls under HTS 2852.10.90.00 as a chemically defined compound of mercury, excluding amalgams, not specified elsewhere in the subheading. This classification aligns with Chapter 28 notes defining chemically defined mercury compounds.
Mercuric Oxide Red
Red mercuric oxide (HgO) is a scarlet powder used in battery production and as a chemical reagent. It qualifies for HTS 2852.10.90.00 as a chemically defined mercury oxide compound not covered by other specific mercury subheadings. Distinguished from yellow form by particle size and color.
Mercuric Iodide
Mercuric iodide (HgI2) appears as a bright red crystalline powder, changing to yellow when heated, used in photography and medicine. Falls under HTS 2852.10.90.00 as a chemically defined mercury halide compound. Excluded from amalgams per heading exclusions.
Mercuric Nitrate
Mercuric nitrate (Hg(NO3)2) is a colorless deliquescent salt used as a catalyst and analytical reagent. Classified in HTS 2852.10.90.00 as other chemically defined mercury compounds meeting Chapter 28/29 note criteria. Highly corrosive and light-sensitive.
Mercuric Acetate
Mercuric acetate (Hg(CH3COO)2) is a white crystalline organomercury compound used in organic synthesis. Though organic, it qualifies under HTS 2852.10.90.00 per subheading note including organic mercury compounds chemically defined. Excluded if meeting Chapter 29 complex criteria elsewhere.
Mercuric Cyanide
Mercuric cyanide (Hg(CN)2) is a highly toxic white powder used in gold mining and electroplating. It is classified under HTS 2852.10.90.00 as a chemically defined mercury compound, distinct from inorganic base cyanides in 2837. Extreme poison requiring special handling.