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

PFOS Aviation Fuel Additive from Mexico

Specialty chemical additive containing perfluorooctane sulfonic acid for aviation fuel system anti-icing and corrosion protection. This falls under 3824.87.00.00 per Chapter 38 subheading note 3 for PFOS mixtures.

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

Obtain FAA or OEM approval documentation for fuel system additives

Provide aviation fuel compatibility test results

Ensure proper IATA dangerous goods shipping classification