Anhydrous Sodium Thiosulfate Powder from China
Anhydrous sodium thiosulfate (Na2S2O3) is a white powder form of the compound used in gold extraction and as a dechlorinator in water treatment. Classified under HTS 2832.30.10.00 as the pure sodium thiosulfate salt, distinct from its hydrated forms but sharing the thiosulfate heading.
Duty Rate — China → United States
39%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide lab assay confirming anhydrous state (>99% purity) to distinguish from pentahydrate and secure 2832.30.10.00 rate
• Comply with TSCA import certification if for commercial use; check for antidumping duties from certain origins
• Avoid bulk packaging over 25kg without inner liners to prevent moisture absorption, which could reclassify as hydrated form