Potassium Waterglass Powder (Technical Grade) from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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