O-Xylene (data page)

Chemical data page From Wikipedia, the free encyclopedia

This page provides supplementary chemical data on o-Xylene.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as eChemPortal, and follow its directions. MSDS is available from MATHESON TRI-GAS, INC. in the SDSdata.org database.

Structure and properties

More information Structure and properties ...
Structure and properties
Index of refraction,[1] nD 1.5058 at 20°C
Abbe number ?
Dielectric constant,[2] εr 2.568 ε0 at 20 °C
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility ?
Surface tension[3] 30.10 dyn/cm at 20°C
Viscosity[4] 1.1049 mPa·s at 0°C
0.8102 mPa·s at 20°C
0.6270 mPa·s at 40°C
0.4168 mPa·s at 80°C
0.2626 mPa·s at 140°C
Solubility[5] 0.171 g/L at 25°C
0.21 g/L at 45°C
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Thermodynamic properties

More information Phase behavior, Solid properties ...
Phase behavior
Triple point 247.8 K (−25.3 °C), ? Pa
Critical point 631 K (358 °C), 3700 kPa
Std enthalpy change
of fusion, ΔfusHo		 13.6 kJ/mol
Std entropy change
of fusion, ΔfusSo		 54.87 J/(mol·K) at −25.3
Std enthalpy change
of vaporization, ΔvapHo		 36.24 kJ/mol at 144.5°C
Std entropy change
of vaporization, ΔvapSo		 ? J/(mol·K)
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		 −24.4 kJ/mol
Standard molar entropy,
Soliquid		 247 J/(mol K)
Enthalpy of combustion, ΔcHo −4552 kJ/mol
Heat capacity, cp 187.0 J/(mol K) at 25°C
Gas properties
Std enthalpy change
of formation, ΔfHogas		 19.0 kJ/mol
Standard molar entropy,
Sogas		 353.6 J/(mol K)
Heat capacity, cp 132.5 J/(mol K) at 25°C
van der Waals' constants[6] a = 3038 L2 kPa/mol2
b = 0.1755 liter per mole
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Vapor pressure of liquid

P in mm Hg11040100400760
T in °C−3.832.159.581.3121.7144.4

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

log10 of o-Xylene vapor pressure. Uses formula: obtained from CHERIC[7]

Distillation data

See also:

More information BPTemp. °C, % by mole m-xylene ...
Vapor-liquid Equilibrium
for o-Xylene/m-Xylene[8]
P = 26.66 kPa
BP
Temp.
°C		 % by mole m-xylene
liquidvapor
100.10.00.0
99.84.75.6
99.69.711.4
99.217.820.6
98.825.929.3
98.434.138.1
97.942.546.8
97.649.653.9
97.257.461.5
96.865.569.2
96.573.576.5
96.180.883.2
95.888.690.2
95.693.794.6
95.3100.0100.0
    
Vapor-liquid Equilibrium
for o-Xylene/Carbon tetrachloride[8]
P = 760 mm Hg
BP
Temp.
°C		 % by mole carbon tetrachloride
liquidvapor
142.01.86.5
136.06.422.9
130.411.236.9
125.016.149.4
120.720.457.3
116.125.364.6
111.830.270.9
107.935.275.9
104.240.480.3
104.140.580.5
99.447.885.2
95.155.488.9
91.662.491.6
88.270.094.0
85.377.195.8
82.684.197.2
80.091.098.5
77.797.699.6
    
Vapor-liquid Equilibrium
for o-Xylene/Ethanol[8]
P = 101.3 kPa
BP
Temp.
°C		 % by mole ethanol
liquidvapor
78.399.5299.66
78.798.5999.03
78.797.7398.52
79.095.7897.40
79.390.5995.09
79.786.7994.16
80.085.0193.70
80.280.9192.91
80.376.7792.36
82.067.6991.21
83.848.6689.25
88.125.1187.32
97.310.9481.49
112.85.2265.91
137.30.6522.90
    
Vapor-liquid Equilibrium
for o-Xylene/Methanol[8]
P = 101.3 kPa
BP
Temp.
°C		 % by mole Methanol
liquidvapor
64.798.7899.10
64.898.3398.81
64.897.6798.45
64.996.7097.96
65.393.3496.82
65.786.8495.68
66.384.2495.31
66.783.3095.65
67.376.7494.97
68.449.3394.52
71.521.7693.84
102.12.4980.00
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Spectral data

More information UV-Vis, IR ...
UV-Vis
λmax ? nm
Extinction coefficient, ε ?
IR
Major absorption bands ? cm−1
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments		  
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References

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