</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

HFC-23 Foam Blowing Agent Blend from Mexico

Polyurethane foam blowing agent mixture incorporating HFC-23 for insulated panels and appliances. Falls under HTS 3827.51.00.00 because it contains trifluoromethane without CFCs or HCFCs, used in energy-efficient insulation production.

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

Foam end-product EPA registration may be required for blowing agents

Vapor pressure and flammability data sheets essential for classification

Document compatibility with specific polyol/isocyanate systems