O-Xylene (data page)

Last updated

This page provides supplementary chemical data on o-Xylene.

Contents

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

Structure and properties
Index of refraction, [1] nD1.5058 at 20°C
Abbe number ?
Dielectric constant, [2] εr2.568 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

Thermodynamic 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, cp187.0 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, cp132.5 J/(mol K) at 25°C
van der Waals' constants [6] a = 3038 L2 kPa/mol2
b = 0.1755 liter per mole

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: log e [?] P m m H g = {\displaystyle \scriptstyle \log _{e}P_{mmHg}=} log e [?] ( 760 101.325 ) - 10.06059 log e [?] ( T + 273.15 ) - 7946.229 T + 273.15 + 83.32184 + 5.939742 x 10 - 6 ( T + 273.15 ) 2 {\displaystyle \scriptstyle \log _{e}({\frac {760}{101.325}})-10.06059\log _{e}(T+273.15)-{\frac {7946.229}{T+273.15}}+83.32184+5.939742\times 10^{-6}(T+273.15)^{2}} obtained from CHERIC LogOXyleneVaporPressure.png
log10 of o-Xylene vapor pressure. Uses formula: obtained from CHERIC

Distillation data

See also:

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

Spectral data

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		 
  This box:
  

References

  1. ↑ Merck Index of Chemicals and Drugs, 9th ed. monograph 9743
  2. ↑ CRC Handbook of Chemistry and Physics, 44th ed. pp 2611–2620
  3. ↑ CRC Handbook of Chemistry and Physics, 44th ed. pp 2244–2248
  4. ↑ Lange's Handbook of Chemistry, 10th ed. pp 1669–1674
  5. ↑ CRC Handbook of Chemistry and Physics, 85th ed. p8-111
  6. ↑ Lange's Handbook of Chemistry, 10th ed, pp 1522–1524
  7. ↑ "Pure Component Properties" (Queriable Database). Chemical Engineering Research Information Center. Retrieved 27 May 2007.
  8. 1 2 3 4 "Binary Vapor-Liquid Equilibrium Data". Chemical Engineering Research Information Center. Archived from the original (Queriable database) on 29 August 2007. Retrieved 27 May 2007.

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