HCFC-141b Technical Grade 99.9% Pure from Mexico
High-purity HCFC-141b (99.9%) is supplied for manufacturing insulated shipping containers and building insulation panels. This separate chemically defined compound qualifies for HTS 2903.73.01.00 as it contains both chlorine and fluorine halogens on an acyclic ethane backbone without additional functional groups.
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 third-party lab analysis confirming ≥99% purity to prevent mixture classification
• Declare exact CAS number 1717-00-6 on commercial invoice for rapid customs processing
• Monitor EU F-gas regulations if transshipping through Europe, as they have stricter HCFC bans