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Diethyl carbonate

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Diethyl carbonate Basic information
Diethyl carbonate Chemical Properties
  • Melting point:-43 °C (lit.)
  • Boiling point:126-128 °C (lit.)
  • Density 0.975 g/mL at 25 °C (lit.)
  • vapor density 4.1 (vs air)
  • vapor pressure 10 mm Hg ( 23.8 °C)
  • refractive index n20/D 1.384(lit.)
  • Flash point:88 °F
  • storage temp. no restrictions.
  • solubility 18.8mg/l insoluble
  • form Liquid
  • color Clear
  • PH6.3 (1g/l, H2O)
  • OdorPleasant, etheral; mild and nonresidual.
  • explosive limit1.4-11.0%(V)
  • Water Solubility Negligible
  • Sensitive Moisture Sensitive
  • Merck 14,3780
  • BRN 956591
  • Stability:Stable. Flammable. Incompatible with strong acids, strong bases, reducing agents, oxidizing agents. Protect from moisture.
  • CAS DataBase Reference105-58-8(CAS DataBase Reference)
  • NIST Chemistry ReferenceCarbonic acid, diethyl ester(105-58-8)
  • EPA Substance Registry SystemDiethyl carbonate (105-58-8)
Safety Information
MSDS
Diethyl carbonate Usage And Synthesis
  • Chemical Propertiescolourless liquid with a mild odour
  • UsesSolvent for nitrocellulose; manufacture of radio tubes; fixing rare earths to cathode elements.
  • Production MethodsManufacturing steps: (a) reacting chlorine and carbon monoxide to produce (COCl2); (b) reacting phosgene with ethyl alcohol to make ethyl chlorocarbonate (ClCO2C2H5); (c) reacting ethyl chlorocarbonate with anhydrous ethyl alcohol to produce diethyl carbonate.
  • Synthesis Reference(s)Journal of the American Chemical Society, 104, p. 1769, 1982 DOI: 10.1021/ja00370a068
  • General DescriptionA colorless liquid with a mild pleasant odor. Diethyl carbonate is slightly less dense than water and insoluble in water. Hence floats on water. Flash point 77°F. Vapors are heavier than air. When heated to high temperatures Diethyl carbonate may emit acrid smoke. Used as a solvent.
  • Air & Water ReactionsHighly flammable. Insoluble in water.
  • Reactivity ProfileDiethyl carbonate reacts with acids to liberate heat along with ethanol and carbon dioxide. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction with caustic solutions. Flammable hydrogen is generated by mixing with alkali metals and hydrides.
  • Health HazardHigh vapor concentrations can cause headache, irritation of eyes and respiratory tract, dizziness, nausea, weakness, loss of consciousness.
  • Chemical ReactivityReactivity with Water Too slow to be hazardous; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
  • Safety ProfileWdly toxic by subcutaneous route. Questionable carcinogen with experimental tumorigenic and teratogenic data. A dangerous fire hazard when exposed to heat or flame; can react with oxidizing materials. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and fumes. See also ANHYDRIDES.
  • CarcinogenicityA study using male and female mice treated with 0, 50, 250, or 1000 ppm (0–140 mg/kg/day) diethyl carbonate in drinking water indicated no carcinogenic effects.
  • Purification MethodsWash the ester (100mL) with an aqueous 10% Na2CO3 (20mL) solution, saturated CaCl2 (20mL), then water (30mL). After drying by standing over solid CaCl2 for 1hour (note that prolonged contact should be avoided because slow combination with CaCl2 occurs), it should be fractionally distilled. Also dry it over MgSO4 and distil it. [Beilstein 3 H 5, 3 I 4, 3 II 4, 3 III 5, 3 IV 5.]
Diethyl carbonate Preparation Products And Raw materials
Diethyl carbonate(105-58-8)Related Product Information
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