Diethylene Glycol Monomethyl Ether (Diglyme Solvent)
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered cyclic acetal or formal derivative
Structural analogs with cyclic ether functionalities classify under heterocyclic compounds.
If when imported as chemical intermediate mixture for specific industrial use
Prepared chemical products or intermediates not elsewhere specified fall under mixtures heading.
If monomethyl ethers of other polyalkylene glycols
Longer chain polyethers have separate provisions within ether-alcohols subheading.
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Import Tips & Compliance
• 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
Related Products under HTS 2909.44.01.10
Methoxyethanol (2-Methoxyethanol)
Methoxyethanol, also known as 2-methoxyethanol (CH3OCH2CH2OH), is a monomethyl ether of ethylene glycol used as a solvent in paints, inks, and cleaning formulations. It falls under HTS 2909.44.0110 as a chemically defined monoalkyl ether of ethylene glycol. This colorless liquid is valued for its low volatility and ability to dissolve a wide range of compounds.
Methyl Cellosolve (Ethylene Glycol Monomethyl Ether)
Methyl Cellosolve is the commercial name for ethylene glycol monomethyl ether (CH3OCH2CH2OH), a key industrial solvent for inks, dyes, and lacquers. It qualifies for HTS 2909.44.0110 as a chemically pure monomethyl ether of ethylene glycol per Chapter 29 notes. This versatile solvent mixes water solubility with organic solvency.
Methyldiglyme (Diethylene Glycol Monomethyl Ether)
Methyldiglyme is diethylene glycol monomethyl ether used in battery electrolytes and as a reaction medium in pharmaceutical production. HTS 2909.44.0110 covers this chemically defined monomethyl ether of diethylene glycol. Its high boiling point (162°C) makes it ideal for demanding applications.
EGMME (Ethylene Glycol Monomethyl Ether USP Grade)
USP-grade Ethylene Glycol Monomethyl Ether (EGMME) meets pharmaceutical solvent standards for drug manufacturing and extraction processes. Classified under HTS 2909.44.0110 as a monomethyl ether of ethylene glycol meeting Chapter 29 purity requirements. This high-purity solvent ensures compliance with GMP standards.
Cellosolve Solvent (Technical Grade Methyl Cellosolve)
Technical grade Cellosolve (ethylene glycol monomethyl ether) is used in industrial cleaning compounds and as a coupling agent in water-based coatings. HTS 2909.44.0110 applies to this chemically defined ether-alcohol per chapter notes (a). Lower purity than USP but suitable for general industrial applications.
Diglycol Monomethyl Ether
Diglycol monomethyl ether (diethylene glycol monomethyl ether) serves as a coalescing aid in latex paints and as a solvent in printing inks. This product falls under HTS 2909.44.0110 as a monomethyl ether of diethylene glycol meeting Chapter 29 chemical definition criteria. Its dual solubility properties enhance paint film formation.