DEG
Diethylene glycol (DEG) is a colorless, low-volatility, low viscosity, hygroscopic liquid. Under normal conditions, diethylene glycol has no detectable odor; however, under high vapor concentrations, a slightly sweet odor may be detected.
DIETHYLENE GLYCOL :
HOCH2CH2OCH2 CH2OH
DEG is completely miscible with water and many organic liquids.
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.
Because of its higher molecular weight, DEG is considerably less volatile than ethylene glycol and di!ers su!iciently in that it has specialized uses. The reactivity and solubility of diethylene glycol provide the basis for many applications.
| Property (Unit) | Typical Value |
Apprearance Diethylene glycol, wt. % max Color ( APHA ) max Acidity [ as acetic acid ], wt. % max Chlorides ( as CI ), ppm max. Iron, ppm max. Water, wt. % max. Water solubility at 25°C Molecular weight Molecular weight Freezing point, °C Flash point ( PMCC ), °C Specific gravity at 20/20 °C Specific heat at 20 °C, cal/g/ °C Absolute viscosity at 20 °C, cP Refractive index at 20 °C Autoignition Temperature °C Critical Pressure Kpa Dielectric Constant at 25°C | Essentially free of suspended matter 100.0 8 0.005 0.1 0.1 0.1 Miscible in all proportions 106.12 245.3 -9 154 1.1182 0.56 35.7 1.4472 364 4.605 31.69 |