This page provides supplementary chemical data on diethyl ether.
Material Safety Data Sheet
The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions. MSDS for diethyl ether is available at Mallinckrodt Baker.
Structure and properties
Structure and properties Index of refraction, nD 1.3497 at 24.8 °C Abbe number? Dielectric constant, εr 4.34 ε0 at 20 °C 8.1 ε0 at –64 °C10.4 ε0 at –116 °C Bond strength ? Bond length ? Bond angle ? Magnetic susceptibility ? Surface tension 17.0 dyn/cm at 20 °C ViscosityLange's Handbook of Chemistry, 10th ed. pp. 1669–1674 0.2950 mP·s at 0 °C0.2681 mP·s at 10 °C0.2448 mP·s at 20 °C0.2230 mP·s at 30 °C
Thermodynamic properties
Phase behavior Triple point 156.92 K (–116.23 °C), ? Pa Critical point 467 K (194 °C), 3600 kPa Std enthalpy changeof fusion, ΔfusHo 7.19 kJ/mol Std entropy changeof fusion, ΔfusSo 46.6 J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo 27.530 kJ/mol at 11.85 °C27.247 kJ/mol at 22.48 °C Std entropy changeof vaporization, ΔvapSo 96.60 J/(mol·K) at 12° Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid –271.2 kJ/mol Standard molar entropy,Soliquid 253.5 J/(mol K) Enthalpy of combustion, ΔcHo –2726.3 kJ/mol Heat capacity, cp 172.0 J/(mol K) Gas properties Std enthalpy changeof formation, ΔfHogas –252.7 kJ/mol Standard molar entropy,Sogas 342.2 J/(mol K) Heat capacity, cp 119.46 J/(mol K) at 25 °C van der Waals' constantsLange's Handbook of Chemistry 10th ed, pp. 1522–1524 a = 1761 L2 kPa/mol2 b = 0.1344 liter per mole
Vapor pressure of liquid P in mm Hg 1 10 40 100 400 760 1520 3800 7600 15200 30400 45600 T in °C –74.3 –48.1 –27.7 –11.5 17.9 34.6 56.0 90.0 122.0 156.0 — — Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.
Distillation data Vapor-liquid Equilibrium for Diethyl Ether/MethanolP = 700 mmHg BPTemp.°C % by mole ether liquid vapor 55.98 3.90 25.16 51.78 7.32 38.58 50.00 9.24 43.84 48.95 10.84 47.73 46.20 14.02 54.04 45.70 14.81 55.30 42.25 21.30 63.51 41.65 21.74 64.43 41.15 23.83 65.74 39.90 33.87 72.47 39.45 29.24 69.58 38.40 33.17 71.72 33.40 60.85 83.07 32.90 77.07 86.59 32.48 82.84 88.57 32.02 97.70 97.66 30.50 95.02 94.58
Spectral data
UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR 3.479 ppm, 1.208 ppmSpectral Database for Organic Compounds (SDBS) Carbon-13 NMR 65.97 ppm, 15.35 ppm Other NMR data MS Masses of main fragments
References