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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If tungstate impurities present
Sodium or potassium tungstates have separate subheading in 2841
If when graphitized for colloidal applications
Colloidal graphite with stannate stabilizers falls under 3801
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include lot-specific purity certificates; use child-resistant packaging for lab quantities
• Pitfall: semiconductor end-use doesn't change chemical classification
Related Products 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.
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.