M-Xylene (data page)

Chemical data page From Wikipedia, the free encyclopedia

This page provides supplementary chemical data on m-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 SIRI, and follow its directions.

Structure and properties

More information Structure and properties ...
Structure and properties
Index of refraction, nD 1.49722 at 20 °C
Abbe number ?
Dielectric constant,[1] εr 2.374 ε0 at 20 °C
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility ?
Surface tension[2] 31.15 dyn/cm at 0 °C
28.90 dyn/cm at 20 °C
20.46 dyn/cm at 100 °C
Viscosity[3] 0.8059 mPa·s at 0 °C
0.6200 mPa·s at 20 °C
0.4970 mPa·s at 40 °C
0.3455 mPa·s at 80 °C
0.2418 mPa·s at 130 °C
Solubility[4] 0.203 g/L at 0 °C
0.161 g/L at 25 °C
0.22 g/L at 40 °C
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Thermodynamic properties

More information Phase behavior, Solid properties ...
Phase behavior
Triple point 219.6 K (–53.5 °C), ? Pa
Critical point 618 K (345 °C), ? Pa
Std enthalpy change
of fusion, ΔfusHo		 11.57 kJ/mol
Std entropy change
of fusion, ΔfusSo		 51.36 J/(mol·K) at –47.88 °C
Std enthalpy change
of vaporization, ΔvapHo		 35.66 kJ/mol at 139.2 °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		 –25.4 kJ/mol
Standard molar entropy,
Soliquid		 253.80 J/(mol K)
Enthalpy of combustion, ΔcHo –4549 kJ/mol
Heat capacity, cp 184.5 J/(mol K) at 25 °C
Gas properties
Std enthalpy change
of formation, ΔfHogas		 17.2 kJ/mol
Standard molar entropy,
Sogas		 358.2 J/(mol K)
Heat capacity, cp 125.8 J/(mol K)
van der Waals' constants[5] a = 3076 L2 kPa/mol2
b = 0.1772 liter per mole
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Vapor pressure of liquid

P in mm Hg11040100400760
T in °C–6.928.355.376.8116.7139.1

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

log10 of m-Xylene vapor pressure. Uses formula: obtained from CHERIC[6]

Distillation data

See also:

More information BPTemp. °C, % by mole carbon tetrachloride ...
Vapor-liquid Equilibrium
for m-Xylene/Carbon tetrachloride[7]
P = 760 mm Hg
BP
Temp.
°C		 % by mole carbon tetrachloride
liquidvapor
137.01.85.8
131.96.521.9
126.811.435.6
122.016.446.5
118.120.855.2
113.925.862.6
110.230.668.7
106.435.773.9
102.841.278.8
102.341.979.6
98.148.884.3
94.156.288.0
90.663.591.1
87.570.493.5
84.677.595.5
82.184.397.1
79.791.198.4
77.597.799.6
    
Vapor-liquid Equilibrium
for m-Xylene/Toluene[7]
P = 760 mm Hg
BP
Temp.
°C		 % by mole toluene
liquidvapor
133.2011.135.8
129.8718.646.2
119.6852.371.8
118.5656.174.1
117.9159.376.0
117.3762.577.9
116.3267.780.2
116.3668.881.6
115.9769.882.2
115.3073.684.4
    
Vapor-liquid Equilibrium
for m-Xylene/Benzene[7]
P = 760 mm Hg
BP
Temp.
°C		 % by mole benzene
liquidvapor
124.8010.244.7
118.9417.559.8
115.4021.465.5
112.3028.473.2
106.3534.078.0
102.0842.783.3
99.1549.486.5
96.7059.590.3
90.8968.193.0
 
Vapor-liquid Equilibrium
for m-Xylene/Aniline[7]
P = 745 mm Hg
BP
Temp.
°C		 % by mole m-xylene
liquidvapor
16710.045.5
16019.558.0
15334.071.5
14653.083.0
14371.589.0
14182.093.0
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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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