Mercuric Sulfate Catalyst
HgSO4 preparation employed as a catalyst in acetylene hydration to acetone production. Classified in HTS 3815.90.2000 as a wholly inorganic mercury reaction initiator.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general mercury salt
Sulfate mercury compounds without catalytic prep classify as inorganic salts in Chapter 28.
If listed hazardous mixture
Mercury-containing hazardous preparations may require 3824 if matching specific toxic lists.
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Import Tips & Compliance
• Strict mercury import quotas apply; obtain Commerce Department authorization prior to shipment
• Use secondary containment packaging per UN standards for soluble mercury salts
• Misclassification risk as battery component (8507) if not clearly catalytic
Related Products under HTS 3815.90.20.00
Molybdic Acid Catalyst
Molybdic acid (H2MoO4) in catalytic grade used for oxidation reactions in chemical manufacturing. This wholly inorganic molybdenum compound qualifies for HTS 3815.90.2000 as a reaction accelerator preparation.
Sodium Molybdate Dihydrate Catalyst
Catalytic-grade Na2MoO4·2H2O used in epoxidation reactions and as a corrosion inhibitor catalyst. This inorganic molybdenum salt falls under HTS 3815.90.2000 for reaction accelerator preparations.
Molybdenum Trioxide Catalyst
Pure molybdenum trioxide (MoO3) used as a catalyst in petroleum refining processes like hydrodesulfurization. This inorganic compound falls under HTS 3815.90.2000 because it consists wholly of inorganic substances, specifically molybdenum, and serves as a reaction accelerator not specified elsewhere.
Mercury Chloride Catalyst
Mercuric chloride (HgCl2) preparation used as a catalyst in vinyl chloride production and organic synthesis reactions. Classified under HTS 3815.90.2000 as a wholly inorganic mercury-based reaction initiator not covered elsewhere in the tariff.
Ammonium Molybdate Catalyst
Ammonium heptamolybdate ((NH4)6Mo7O24) used as a selective oxidation catalyst in acrylic acid production. Falls under HTS 3815.90.2000 as a wholly inorganic molybdenum-based catalytic preparation.
Mercury Oxide Reaction Initiator
Red mercuric oxide (HgO) prepared for use as a catalyst in laboratory-scale organic reactions and dehydrogenation processes. This inorganic mercury compound is specifically classified under HTS 3815.90.2000.