Phosphonate Flame Retardant Intermediate 2931.47 from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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