Disodium Tungstate Anhydrous from Japan
Disodium tungstate anhydrous (Na2WO4) is a high-purity reagent for laboratory use in protein crystallization and corrosion inhibition. HTS 2841.80.00 covers this alkali metal tungstate salt.
Duty Rate — Japan → United States
5.5%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Distinguish anhydrous vs dihydrate forms with water content certificates (<0.5%)
• Lab-grade requires USP/ACS compliance docs for pharma-related imports
• Avoid bulk packaging over 25kg to minimize DOT hazardous classification