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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°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	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

Thermodynamic properties

Phase behavior
Triple point	156.92 K (–116.23 °C), ? Pa
Critical point	467 K (194 °C), 3600 kPa
Std enthalpy change of fusion, ΔfusHo	7.19 kJ/mol
Std entropy change of fusion, ΔfusSo	46.6 J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo	27.530 kJ/mol at 11.85°C 27.247 kJ/mol at 22.48°C
Std entropy change of vaporization, ΔvapSo	96.60 J/(mol·K) at 12°
Solid properties
Std enthalpy change of formation, ΔfHosolid	? kJ/mol
Standard molar entropy, Sosolid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Liquid properties
Std enthalpy change of 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 change of 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' constants	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.

log₁₀ of Diethyl Ether vapor pressure. Uses formula: ${\log }_e{P}_{mmHg}=$${\log }_e(\frac{760}{101.325})-12.4379{\log }_e(T+273.15)-\frac{6340.514}{T+273.15}+95.14704+1.412918\times 10^{-05}(T+273.15{)}^2$ obtained from CHERIC

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Distillation data

Vapor-liquid Equilibrium for Diethyl Ether/Methanol 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

Spectral data

UV-Vis
λmax	? nm
Extinction coefficient, ε	?
IR
Major absorption bands	? cm−1
NMR
Proton NMR	3.479 ppm, 1.208 ppm
Carbon-13 NMR	65.97 ppm, 15.35 ppm
Other NMR data
MS
Masses of main fragments

References

• Template:Cite web

Except where noted otherwise, data relate to standard ambient temperature and pressure.

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