Anhydrous Diethyl Ether from Mexico
Water-free diethyl ether used in Grignard reactions and moisture-sensitive syntheses. Falls under 2909.11.00.00 as pure acyclic ether; anhydrous state is standard purification, not rendering it specific-use per Chapter 29 note (e).
Duty Rate — Mexico → United States
11%
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
• Include GC-MS purity certificate; water content <0.01% distinguishes from technical grades
• Use brown glass or metal containers to prevent peroxide formation during transport
• Declare as 'not for anesthetic use' if intended for industrial/lab to avoid medical device scrutiny