Ammonium Dithionite Solution from Germany
Ammonium dithionite (NH4)2S2O4 in aqueous solution acts as a reducing bleach for textiles and paper. Falls under HTS 2831.90.00.00 as 'other' dithionites when chemically defined and not organically stabilized. Concentration typically 20-40% active ingredient for liquid handling.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Classify as solution only if dithionite constitutes principal characteristic; otherwise, preparations in 3824
• DOT Class 8 corrosive label required; IBC totes preferred for bulk import
• Test for ammonia content to prevent reclassification as ammonium sulfite derivatives