DuPont Vertrel XF HCFC-142b Specialty Fluid from Mexico
Vertrel XF is a high-purity HCFC-142b formulation (1-chloro-1,1-difluoroethane) used as precision cleaning solvent in electronics manufacturing. Classified under HTS 2903.74.01.00 when imported as ≥99% pure chemical compound. Distinguish from formulated solvent blends.
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
• Pure Vertrel XF qualifies as Chapter 29; blends with co-solvents move to 3814.00
• Non-flammable certification required for air shipment under IATA regulations
• Verify no alcohol content (>0.1%) to avoid ester classification issues per Chapter notes