Potassium stannate
Salts of oxometallic or peroxometallic acids: > Other: > Potassium stannate
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 2841.90.30.00
Potassium Stannate Trihydrate
Potassium stannate trihydrate (K2SnO3·3H2O) is a white crystalline powder used primarily as a source of stannate ions in chemical plating processes for metals. It falls under HTS 2841.90.30.00 as it is specifically the potassium salt of stannic acid, a peroxometallic acid derivative. This chemically defined inorganic compound is essential for electroless tin plating on substrates like circuit boards.
Anhydrous Potassium Stannate
Anhydrous potassium stannate (K2SnO3) is a high-purity, water-free form used in advanced electroplating solutions for corrosion-resistant tin coatings. Classified under HTS 2841.90.30.00 as the potassium salt of stannic acid, meeting Chapter 28 criteria for chemically defined oxometallic salts. It provides stable stannate ions without hydration interference in formulations.
Technical Grade Potassium Stannate
Technical grade potassium stannate is a commercial powder (typically 40-60% K2SnO3) for immersion tin plating in electronics manufacturing. It qualifies for HTS 2841.90.30.00 as the designated potassium salt of stannic acid, despite minor impurities allowed in technical grades. Used to create uniform tin layers on copper for solderability.
High Purity Potassium Stannate 99%
99% pure potassium stannate crystals for laboratory and semiconductor applications requiring ultra-clean stannate sources. Precisely classified under HTS 2841.90.30.00 as chemically defined potassium stannate per Chapter 28 Note 1. Essential for atomic layer deposition of tin oxide films.
Potassium Stannate for Glass Coating
Specialty potassium stannate formulation for transparent conductive oxide coatings on glass substrates. Falls under HTS 2841.90.30.00 as the base potassium stannate compound before application. Provides tin source for ITO (indium tin oxide) production.
Electroless Plating Grade Potassium Stannate
Electroless plating grade potassium stannate optimized for stable bath life in PCB manufacturing. HTS 2841.90.30.00 classification as pure potassium stannate salt. Delivers consistent tin deposition rates for ENIG processes.
ACS Reagent Potassium Stannate
ACS reagent grade potassium stannate meeting American Chemical Society purity standards for analytical chemistry. Classified HTS 2841.90.30.00 as chemically defined stannate salt. Used in qualitative analysis of tin and qualitative cation testing.
Industrial Potassium Stannate Flakes
Flake form potassium stannate for easier dissolution in large-scale plating operations. HTS 2841.90.30.00 as the specific potassium salt regardless of physical form. Reduces dust hazards in bulk handling.
Stabilized Potassium Stannate Solution Precursor
Powder precursor for preparing stabilized potassium stannate solutions in plating lines. Remains HTS 2841.90.30.00 as solid salt, not solution. Prevents precipitation in concentrated baths.