Sodium Silicate Cement Hardener from Japan
A liquid preparation of sodium silicate (water glass) used as a hardener and dust proofer for concrete floors and surfaces. Classified under HTS 3824.40.20.00 because it consists wholly of inorganic silicate compounds prepared for cement and concrete applications. It penetrates concrete to form a hardened silica gel layer.
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%
Import Tips
• Require manufacturer's declaration of inorganic-only composition; check for silicate concentration compliance with ASTM standards; avoid misdeclaration as general silicate under 2839 which lacks preparation specificity