Potassium Tetraborate from Japan
Potassium tetraborate is an inorganic salt used as a boron source in welding fluxes and ceramics. It is classified in HTS 2840.20.00.00 as other borates, distinct from sodium borates. This compound appears as a white powder soluble in water.
Duty Rate — Japan → United States
13.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Submit chemical composition analysis to prove potassium borate identity
• Check REACH-like compliance for EU-origin goods transshipping to US
• Label as 'not for food use' to prevent misimport as additive