Diglyme (Diethylene Glycol Dimethyl Ether) from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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