Perfluorodiglyme from Mexico
CF3(OCF2CF2)2OCF3, perfluorinated diether technically acyclic despite ether linkages. 2903.78.00.00 as perhalogenated acyclic hydrocarbon derivative per chapter scope. Specialty heat transfer fluid.
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
• Confirm acyclic classification vs cyclic perfluoroethers in 2939
• Boiling point 112°C; stable to 400°C but avoid Lewis acids
• Fully fluorinated; no hydrogen for FTIR confirmation of purity