Ethylphosphonyl Difluoride from China
Ethylphosphonyl difluoride (C2H5P(O)F2) is an organo-inorganic compound featuring an ethyl alkyl chain attached to phosphorus with difluoride groups. Classified under HTS 2931.59.00.15 as it precisely matches the 'alkyl phosphonyl difluorides' specification for ethyl variants in halogenated organo-phosphorus derivatives. Used in pesticide synthesis and as a reagent in phosphorus chemistry.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Declare exact CAS number (430-64-8) and concentration; impurities may trigger reclassification under Chapter notes
• Obtain prior DEA/CWC approvals; Schedule 2 chemical requiring end-user certificates for import
• Use fluoropolymer-lined containers to prevent hydrolysis during shipping, common pitfall leading to customs holds