Diethylene glycol ethyl methyl ether
[CAS 1002-67-1]

Identification

• Classification: Chemical reagent >> Organic reagent >> Ether
• Name: Diethylene glycol ethyl methyl ether
• Synonyms: 1-Ethoxy-2-(2-methoxyethoxy)ethane
• Molecular Formula: C₇H₁₆O₃
• Molecular Weight: 148.20
• CAS Registry Number: 1002-67-1
• EC Number: 213-690-5
• SMILES: CCOCCOCCOC

Properties

• Solubility: 7.586e+004 mg/L (25 °C water)
• Density: 0.9±0.1 g/cm³ Calc.^*, 0.923 g/mL (Expl.)
• Boiling point: 167.9±15.0 °C 760 mmHg (Calc.)^*
• Flash point: 53.8±15.9 °C (Calc.)^*
• Index of refraction: 1.402 (Calc.)^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H319-H412
• Safety Statements: P264+P265-P273-P280-P305+P351+P338-P337+P317-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412
Skin irritation	Skin Irrit.	2	H315
Reproductive toxicity	Repr.	2	H361
Flammable liquids	Flam. Liq.	3	H226

chemBlink Chemical Story

Diethylene glycol ethyl methyl ether shows how solvent molecules can be designed to live between polar and nonpolar worlds. Its three ether oxygens interact with polar molecules, while its hydrocarbon groups retain affinity for organic materials. This combination is typical of glycol ethers: they can dissolve mixtures that are awkward for either water or simple hydrocarbons alone.

The molecule is fully etherified and has no free hydroxyl group. That changes hydrogen bonding, volatility, and reactivity while preserving the flexible polyether chain. In coatings, inks, cleaning formulations, and process chemistry, such a balance can provide useful solvency together with controlled evaporation.

Its broader story is that solvent choice is molecular engineering. Small changes to the end groups of a polyether can alter water compatibility, resin solvency, evaporation rate, and handling without changing the central backbone.

References:
PubChem. 1-Ethoxy-2-(2-methoxyethoxy)ethane, CAS 1002-67-1.
Industrial glycol ether physicochemical and use literature.

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