99.9% Pure CFC-11 Trichlorofluoromethane from Mexico
High-purity (99.9%) trichlorofluoromethane, designated CFC-11, is a separate chemically defined organic compound under Chapter 29 note (a), imported under HTS 2903.77.00.10 for its exact perhalogenated fluorochloromethane structure. This specification excludes mixtures or preparations, qualifying it strictly as the base halogenated hydrocarbon. Used in analytical chemistry and calibration gas standards.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide GC-MS purity certificate matching ≥99.9%; deviations reclassify to mixture headings
• Declare specific analytical end-use on commercial invoice to qualify for potential research exemptions
• Avoid retail packaging; bulk cylinders only, as consumer packages shift to Chapter 38