Thiamine Propyl Disulfide from China
Thiamine propyl disulfide (TPD) offers improved bioavailability over thiamine HCl for oral supplements. Classified HTS 2936.22.00.00 as synthetic vitamin B1 derivative for nutritional fortification. Stable in tablet matrices.
Duty Rate — China → United States
0%
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
• Disulfide bond stability testing required for 36-month shelf life claims
• Avoid bulk packaging >25kg to prevent HAZMAT shipping requirements