Diethylene Glycol Monomethyl Ether (Diglyme Solvent) from Mexico
Diethylene glycol monomethyl ether (CH3O(CH2CH2O)2H), commonly called diglyme, is a monomethyl ether of diethylene glycol used as a high-boiling solvent in organic synthesis and electronics. Classified under HTS 2909.44.0110 for its chemically defined ether-alcohol structure. It's prized for its aprotic properties and thermal stability.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit NMR or GC-MS spectra verifying the diethylene glycol monomethyl ether structure to confirm Chapter 29 classification
• Declare flash point (96°C) and proper shipping name 'Glycol ether' for DOT compliance during import
• Avoid misclassification by providing evidence it's not a Chapter 38 reactive diluent or paint additive