Disodium Tungstate Anhydrous from Mexico
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 — Mexico → United States
5.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 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