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2839.90.10.00/Potassium Waterglass Powder (Technical Grade)/Mexico

Potassium Waterglass Powder (Technical Grade) from Mexico

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.

Duty Rate — Mexico → United States

13.1%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Provide assay certificates showing >95% silicate content to distinguish from mixtures

• Dust hazard precautions required; label as irritant and ensure proper packaging for air/sea freight

Potassium Waterglass Powder (Technical Grade) from Mexico — Import Duty Rate | HTS 2839.90.10.00