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2839.90.10.00/Technical Potassium Silicate Grade K/Japan

Technical Potassium Silicate Grade K from Japan

Grade K potassium silicate with 29% solids for investment casting and ceramics. HTS 2839.90.1000 applies to this chemically defined industrial silicate of potassium. Critical for precision manufacturing imports.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Casting industry end-use certificates aid classification

• High pH requires corrosion-resistant packaging