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This page provides supplementary chemical data on nitromethane.

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. MSDS is available from Mallinckrodt Baker.

Structure and properties

Structure and properties
Index of refraction, nD 1.3935 at 20°C
Abbe number ?
Dielectric constant, εr 35.87 ε0 at 30 °C
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility ?
Surface tension[1] 39.8 dyn/cm at 0°C
36.8 dyn/cm at 20°C
26.1 dyn/cm at 100°C
Viscosity[2] 0.853 mPa·s at 0°C
0.620 mPa·s at 25°C

Thermodynamic properties

Phase behavior
Triple point 244.77 K (–23.38 °C), ? Pa
Critical point 588 K (315 °C), 5870 kPa
Std enthalpy change
of fusion, ΔfusHo 		9.7 kJ/mol
Std entropy change
of fusion, ΔfusSo 		39.6 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo 		38.3 kJ/mol
Std entropy change
of vaporization, ΔvapSo 		128.36 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 		–113 kJ/mol
Standard molar entropy,
Soliquid 		171.75 J/(mol K)
Enthalpy of combustion, ΔcHoliquid –709 kJ/mol
Heat capacity, cp 105.98 J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHogas 		–81 kJ/mol
Standard molar entropy,
Sogas 		? J/(mol K)
Heat capacity, cp[3] 57.3 J/(mol K) at 25°C

Vapor pressure of liquid

P in mm Hg 1 10 40 100 400 760
T in °C –29.0 2.8 27.5 46.6 82.0 101.2

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

log10 of Nitromethane vapor pressure. Uses formula: obtained from CHERIC[3]

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Distillation data

Vapor-liquid Equilibrium
for Nitromethane/Ethanol[4]
P = 730 mm Hg
BP
Temp.
°C 		% by mole ethanol
liquid vapor
97.7 3.0 15.7
93.4 4.7 22.3
88.9 8.5 32.9
86.1 12.2 39.5
83.6 16.6 45.3
80.6 25.6 52.9
79.2 31.8 56.3
77.9 45.1 63.5
77.0 53.9 66.9
77.1 58.9 68.6
76.5 64.6 70.5
76.4 72.4 74.0
76.6 78.7 77.3
76.5 81.9 79.4
76.7 85.9 82.2
76.9 91.4 87.1
77.7 95.3 93.0
77.8 97.3 96.5
   
Vapor-liquid Equilibrium
for Nitromethane/Methanol[4]
P = 730 mm Hg
BP
Temp.
°C 		% by mole methanol
liquid vapor
96.9 1.5 13.3
93.1 2.6 22.8
89.1 4.8 33.4
84.8 7.5 42.9
82.1 9.6 48.4
77.9 15.2 57.0
72.9 25.4 67.3
71.1 31.4 70.4
68.2 42.6 74.7
67.3 49.3 76.1
65.6 67.8 81.8
65.1 74.7 83.8
65.0 81.3 86.4
64.6 88.6 90.1
64.5 91.4 92.1
64.4 96.0 95.6
64.5 99.4 99.3

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 		 

References

  1. ↑ Lange's Handbook of Chemistry, 10th ed. pp 1661-1663
  2. ↑ CRC Handbook of Chemistry and Physics, 44th ed. pp 2258-2263
  3. ↑ 3.0 3.1 Template:Cite web
  4. ↑ 4.0 4.1 Template:Cite web

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

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