Spray-Dried Potassium Silicate Beads
> Spray-dried potassium silicate beads are a beaded form of potassium silicate for easy handling in concrete admixtures and catalysts. They are a commercial alkali metal silicate of potassium in solid form, classifiable under this tariff item as a separate chemically defined compound. The product does not contain added stabilizers or other substances that would remove it from Chapter 28.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the beads are coated or impregnated with catalytic substances
Prepared catalysts may fall under Chapter 38.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• > Classify the product based on its chemical composition (potassium silicate) and physical form (beads)
• Provide a certificate of analysis to confirm the absence of added organic binders
• Ensure the product is not classified as a catalyst preparation under Chapter 38
Related Products under Tariff item 2839.90.00
AgSil 16H Potassium Silicate Fertilizer Grade
> AgSil 16H is a horticultural potassium silicate solution with a 2.5:1 SiO2:K2O ratio, used for plant nutrition and disease resistance. It is a commercial alkali metal silicate of potassium, meeting the Chapter 28 definition of a separate chemically defined compound or a solution thereof. Although marketed for agricultural use, it is not a fertilizer preparation and remains classifiable under this tariff item.
Anhydrous Sodium Silicate Powder
> Anhydrous sodium silicate powder is a dehydrated powder of sodium silicate used in specialty ceramics and investment casting. It is a commercial alkali metal silicate of sodium, classifiable under this tariff item as a separate chemically defined compound. The product does not contain added stabilizers or other substances that would remove it from Chapter 28.
Industrial Potassium Silicate 40% Solids
> This is a 40% solids aqueous solution of potassium silicate used in paper manufacturing and detergents. It is a commercial alkali metal silicate of potassium, classifiable under this tariff item as a separate chemically defined compound in solution. The product does not contain added stabilizers or other substances that would remove it from Chapter 28.
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 is a commercial alkali metal silicate of potassium, classifiable under this tariff item as a separate chemically defined compound in solution. The product is not a preparation of Chapter 38.
Liquid Sodium Silicate Grade 40° Bé
> Liquid sodium silicate Grade 40° Bé is an industrial-grade liquid sodium silicate with 40° Baumé density, applied in corrugated board production and pulp bleaching. It is a commercial alkali metal silicate of sodium, classifiable under this tariff item as a separate chemically defined compound in solution. The product is not a preparation of Chapter 38.
Lithium Silicate Solution
> Lithium silicate solution is an aqueous solution of lithium silicate for concrete densifiers and protective coatings. It is a commercial alkali metal silicate of lithium, classifiable under this tariff item as a separate chemically defined compound in solution. The product is not a preparation of Chapter 38.