Di Ethylene glycol  (DEG)

Di Ethylene glycol (DEG)

 

Di Ethylene glycol (DEG) has many uses, including as antifreeze in cooling and heating systems, in hydraulic brake fluids, and as a solvent.  Acute (short-term) exposure of humans to Ethylene glycol by ingesting large quantities causes three stages of health effects: central nervous system (CNS) depression, followed by cardiopulmonary effects, and later renal damage.  The only effects noted in one study of individuals exposed to low levels of Ethylene glycol by inhalation for about a month were throat and upper respiratory tract irritation.  Rats and mice chronically (long-term) exposed to Ethylene glycol in their diet exhibited signs of kidney toxicity and liver effects.  Several studies of rodents exposed orally or by inhalation showed Ethylene glycol to be fetotoxic.  An epidemiologic study on renal cancer mortality did not find an increased risk for workers exposed to Ethylene glycol.

 

 

Uses:

 

Ethylene glycol is used as antifreeze in cooling and heating systems, in hydraulic brake fluids, as an industrial humectant, as an ingredient of electrolytic condensers, as a solvent in the paint and plastics industries, in the formulations of printers’ inks, stamp pad inks, and inks for ballpoint pens, as a softening agent for cellophane, and in the synthesis of safety explosives, plasticizers, synthetic fibers (Terylene, Dacron), and synthetic waxes.  Ethylene glycol is also used to de-ice airport runways and aircraft.

 

Physical Properties:

 

  • The chemical formula for ethylene glycol is C 2 H 6 O 2 , and its molecular weight is 62.07 g/mol.
  • Ethylene glycol occurs as a clear, slightly viscous liquid that is completely miscible with water.
  • Ethylene glycol is odorless.
  • The vapor pressure for ethylene glycol is 0.06 mm Hg at 20 °C, and its log octanol/water partition

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