n-Propylphosphonyl Difluoride from Mexico
n-Propylphosphonyl difluoride (CH3CH2CH2P(O)F2) features a straight-chain propyl group on the P(O)F2 structure. Falls squarely under HTS 2931.59.00.15 as the n-propyl variant of alkyl phosphonyl difluorides in the halogenated organo-phosphorus category. Employed in flame retardant precursor synthesis.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Label with GHS corrosive/toxic pictograms; missing labeling causes FDA/CBP rejection at entry
• File EEI with exact quantity <100g exemption limits for CWC chemicals to avoid license
• Test for isomer purity—n-propyl vs iso contamination affects statistical reporting suffix