Diglyme (Diethylene Glycol Dimethyl Ether) from Canada
Diglyme is a heterocyclic diether with oxygen hetero-atoms in flexible ring conformation, used in organometallic chemistry. HTS 2932.99.90 as other oxygen heterocycles distinguished from acyclic ethers.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Anhydrous grade requires Karl Fischer water analysis (<10 ppm)
• Molecular sieve packaging maintains purity classification
• Distinguish from higher glymes potentially classified as polymers