Liquid Potassium Silicate KAS-10
KAS-10 is a high-ratio potassium silicate liquid (SiO2:K2O = 3.3:1) for specialty coatings and soil stabilizers. It qualifies under HTS 2839.90.1000 as a chemically defined commercial silicate of potassium. Commonly imported for agricultural and construction uses.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If marketed as fertilizer additive
Silicates prepared as mineral/chemical fertilizers fall under Chapter 31.
If of other metals like calcium or aluminum
Subheading 2839.90.5000 covers silicates of other metals, excluding potassium.
If anti-freeze or prepared liquid formulation
Prepared chemical products for specific uses like de-icing shift from pure compounds.
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Import Tips & Compliance
• Declare exact weight ratio and concentration; customs may test for potassium content
• Comply with DOT corrosive liquid regulations for transport
• Avoid pitfall of undervaluation; base value on active silicate content excluding water
Related Products under HTS 2839.90.10.00
AgSil 16H Potassium Silicate Fertilizer Grade
AgSil 16H is a horticultural potassium silicate solution (2.5:1 ratio) for plant nutrition and disease resistance. Still classified under HTS 2839.90.1000 as a commercial potassium silicate, not as a fertilizer preparation. Imported for greenhouse and hydroponics.
Potassium Silicate Solution (PQ Corporation Kasil #6)
Kasil #6 is a liquid potassium silicate solution with a SiO2:K2O weight ratio of 2.5, used in adhesives, coatings, and welding electrodes. It falls under HTS 2839.90.1000 as a commercial alkali metal silicate of potassium, chemically defined as a soluble glass-like compound. This product is widely imported for industrial applications requiring alkali resistance.
Potassium Waterglass Powder (Technical Grade)
Anhydrous potassium silicate powder derived from spray-dried liquid, used in foundry molds and refractory cements. Classified under HTS 2839.90.1000 as a commercial potassium silicate, meeting Chapter 28 definitions for inorganic compounds. Ideal for applications needing high-temperature binding.
PQ Corporation Kasil #19 Potassium Silicate
Kasil #19 offers a 3.9:1 SiO2:K2O ratio in liquid form, optimized for welding rod binders and high-performance coatings. Falls under HTS 2839.90.1000 for commercial potassium silicates per Chapter 28 notes. Essential for manufacturing durable industrial products.
Industrial Potassium Silicate 40% Solids
A 40% solids aqueous solution of potassium silicate used in paper manufacturing and detergents. Classified in HTS 2839.90.1000 as a commercial alkali metal silicate of potassium, aligning with Chapter 28 definitions. Key import for pulp and paper industry.
Spray-Dried Potassium Silicate Beads
Beaded form of potassium silicate for easy handling in concrete admixtures and catalysts. HTS 2839.90.1000 covers this commercial form as a potassium silicate compound. Popular for construction chemical imports.