Phosphonate Flame Retardant Intermediate 2931.47 from China
A purified batch of (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate used as a key intermediate in synthesizing phosphorus-based flame retardants for textiles. Classified under HTS 2931.47.00.00 due to its non-halogenated organo-phosphorus structure with direct C-P bonds.
Duty Rate — China → United States
38.7%
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
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)
Import Tips
• Include Safety Data Sheet (SDS) and purity certificate (>98%) to substantiate chemical identity for CBP review
• Avoid anti-dusting agents that could trigger reclassification under general chemical mixtures if exceeding Chapter 29 note (g) limits
• Confirm bulk industrial packaging to distinguish from diluted retail preparations excluded by Chapter notes