Product Description

Diethylene glycol is derived as a co-product with ethylene glycol (MEG) and triethylene glycol. The industry generally operates to maximize MEG production. Ethylene glycol is by far the largest volume of the glycol products in a variety of applications. Availability of DEG will depend on demand for derivatives of the primary product, ethylene glycol, rather than on DEG market requirements.

DEG is produced by the partial hydrolysis of ethylene oxide. Depending on the conditions, varying amounts of DEG and related glycols are produced. The resulting product is two ethylene glycol molecules joined by an ether bond.

Specifications of DEG

The hydroxyl groups on glycols undergo alcohol chemistry, thus providing opportunities for production of a wide variety of derivatives. Hydroxyls can be converted to aldehydes, alkyl halides, amines, azides, carboxylic acids, ethers, mercaptans, nitrate esters, nitriles, nitrite esters, organic esters, peroxides, phosphate esters and sulfate esters.


Property (Unit)Typical Value
ApprearanceEssentially free of suspended matter
Diethylene glycol, wt. % max.100.0
Color ( APHA ) max.8
Acidity [ as acetic acid ], wt. % max.0.005
Chlorides ( as CI ), ppm max.0.1
Iron, ppm max.0.10
Water, wt. % max.0.10
Water solubility at 25°CMiscible in all proportions
Molecular weight106.12
Boiling point at 760 mm Hg, °C245.3
Freezing point, °C-9
Flash point ( PMCC ), °C154
Specific gravity at 20/20 °C1.1182
Specific heat at 20 °C, cal/g/ °C0.56
Absolute viscosity at 20 °C, cP35.7
Refractive index at 20 °C1.4472
Autoignition Temperature °C364
Critical Pressure Kpa4.605
Dielectric Constant at 25°C31.69



Net weight 20 metric tons



Net weight 22 metric tons


Net weight 17.6 metric tons

Related Documents

Download DEG TDS

Download DEG TDS (Technical Data Sheet)