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Diethyl carbonate

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Diethyl carbonate
Names
Other names
carbonic ether; ethyl carbonate; Eufin[1]
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.003.011 Edit this at Wikidata
EC Number
  • 203-311-1
RTECS number
  • FF9800000
UNII
UN number 2366
  • InChI=1S/C5H10O3/c1-3-7-5(6)8-4-2/h3-4H2,1-2H3 checkY
    Key: OIFBSDVPJOWBCH-UHFFFAOYSA-N checkY
  • InChI=1/C5H10O3/c1-3-7-5(6)8-4-2/h3-4H2,1-2H3
    Key: OIFBSDVPJOWBCH-UHFFFAOYAX
  • O=C(OCC)OCC
Properties
C5H10O3
Molar mass 118.132 g·mol−1
Appearance Clear colorless liquid
Density 0.975 g/cm3
Melting point −74.3[2] °C (−101.7 °F; 198.8 K)
Boiling point 126 to 128 °C (259 to 262 °F; 399 to 401 K)
Insoluble
Hazards
GHS labelling:
GHS02: FlammableGHS07: Exclamation mark
Warning
H226, H315, H319, H335
P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501
Flash point 33 °C (91 °F; 306 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Diethyl carbonate (sometimes abbreviated DEC) is an ester of carbonic acid and ethanol with the formula OC(OCH2CH3)2. At room temperature (25 °C) diethyl carbonate is a clear liquid with a low flash point.

Diethyl carbonate is used as a solvent such as in erythromycin intramuscular injections.[3][4] [5]It can be used as a component of electrolytes in lithium batteries. It has been proposed as a fuel additive to support cleaner diesel fuel combustion because its high boiling point might reduce blended fuels' volatility, minimizing vapor buildup in warm weather that can block fuel lines.[6]

Production

It can be made by reacting phosgene with ethanol, producing hydrogen chloride as a byproduct. Because chloroform can react with oxygen to form phosgene, chloroform can be stabilized for storage by adding 1 part (by mass) of ethanol to 100 parts (by mass) of chloroform, so that any phosgene that forms is converted into diethyl carbonate.

2 CH3CH2OH + COCl2 → CO3(CH2CH3)2 + 2HCl

See also

References

  1. ^ "DIETHYL CARBONATE". Retrieved 2010-02-01.
  2. ^ Ding, Michael (2001). "Liquid/Solid Phase Diagrams of Binary Carbonates for Lithium Batteries". Journal of the Electrochemical Society. 148: A299–A304. doi:10.1149/1.1353568.
  3. ^ Anderson, Robert C.; Harris, Paul N.; Chen, K. K. (1955). "Further toxicological studies with ilotycin® (Erythromycin, Lilly)". Journal of the American Pharmaceutical Association. 44 (4): 199–204. doi:10.1002/jps.3030440404. ISSN 1930-2304.
  4. ^ [1], "9-Dihydro-11,12-ketal derivatives of erythromycin A and epi-erythromycin A", issued 1982-03-01 
  5. ^ [2], "3",4"-Oxyallylene erythromycin and oleandomycin, composition and method of use", issued 1982-03-01 
  6. ^ Walter, K. Scientists Discover Method for Cleaner Fossil Fuel. MR&D Magazine. 09/18/2017 - 3:16pm