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Chemical data page From Wikipedia, the free encyclopedia
This page provides supplementary chemical data on diethyl ether.
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 | |
---|---|
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 °C 10.4 ε0 at –116 °C |
Bond strength | ? |
Bond length | ? |
Bond angle | ? |
Magnetic susceptibility | ? |
Surface tension | 17.0 dyn/cm at 20 °C |
Viscosity[1] | 0.2950 mP·s at 0 °C 0.2681 mP·s at 10 °C 0.2448 mP·s at 20 °C 0.2230 mP·s at 30 °C |
Phase behavior | |
---|---|
Triple point | 156.92 K (–116.23 °C), ? Pa |
Critical point | 467 K (194 °C), 3600 kPa |
Std enthalpy change of fusion, ΔfusH |
7.19 kJ/mol |
Std entropy change of fusion, ΔfusS |
46.6 J/(mol·K) |
Std enthalpy change of vaporization, ΔvapH |
27.530 kJ/mol at 11.85 °C 27.247 kJ/mol at 22.48 °C |
Std entropy change of vaporization, ΔvapS |
96.60 J/(mol·K) at 12° |
Solid properties | |
Std enthalpy change of formation, ΔfH |
? kJ/mol |
Standard molar entropy, S |
? J/(mol K) |
Heat capacity, cp | ? J/(mol K) |
Liquid properties | |
Std enthalpy change of formation, ΔfH |
–271.2 kJ/mol |
Standard molar entropy, S |
253.5 J/(mol K) |
Enthalpy of combustion, ΔcH |
–2726.3 kJ/mol |
Heat capacity, cp | 172.0 J/(mol K) |
Gas properties | |
Std enthalpy change of formation, ΔfH |
–252.7 kJ/mol |
Standard molar entropy, S |
342.2 J/(mol K) |
Heat capacity, cp | 119.46 J/(mol K) at 25 °C |
van der Waals' constants[2] | a = 1761 L2 kPa/mol2 b = 0.1344 liter per mole |
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.
Vapor-liquid Equilibrium for Diethyl Ether/Methanol[4] P = 700 mmHg | ||
BP Temp. °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 |
UV-Vis | |
---|---|
λmax | ? nm |
Extinction coefficient, ε | ? |
IR | |
Major absorption bands | ? cm−1 |
NMR | |
Proton NMR | 3.479 ppm, 1.208 ppm[5] |
Carbon-13 NMR | 65.97 ppm, 15.35 ppm[5] |
Other NMR data | |
MS | |
Masses of main fragments |
|