Isopropylphosphonyl Difluoride from Mexico
Isopropylphosphonyl difluoride ((CH3)2CHP(O)F2) contains a branched isopropyl group linked to the phosphonyl difluoride moiety. It qualifies for HTS 2931.59.00.15 as one of the explicitly named isopropyl alkyl phosphonyl difluorides in halogenated organo-phosphorus compounds. Critical precursor in nerve agent synthesis and specialty fluorophosphorus chemicals.
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
• Provide OPPTS 830 testing data for customs; failure to declare toxicity leads to 100% exam rates
• Secure BIS export license equivalents for import; dual-use chemical with strict end-use monitoring
• Avoid glass packaging—use PFA/PTFE due to HF generation risk, preventing common DOT violation