Nitromethane (data page)

This page provides supplementary chemical data on nitromethane.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. MSDS is available from Mallinckrodt Baker. ^[1]

Structure and properties

Structure and properties
Index of refraction, nD	1.3817 at 20 °C [2]
Abbe number	?
Dielectric constant, εr	37.27 ε0 at 20 °C [3]
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	−21.0·10−6 cm3/mol [4]
Surface tension	39.04 dyn/cm at 10 °C 36.53 dyn/cm at 25 °C 32.33 dyn/cm at 50 °C [5]
Viscosity	0.63 cP at 25 °C [6]

Thermodynamic properties

Phase behavior
Triple point	244.77 K (−23.38 °C), ? Pa
Critical point	588 K (315 °C), 5870 kPa [7]
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	−112. kJ/mol [8]
Standard molar entropy, Soliquid	171.9 J/(mol·K) [8]
Enthalpy of combustion, ΔcHoliquid	−709 kJ/mol
Heat capacity, cp	106.6 J/(mol·K) [8]
Gas properties
Std enthalpy change of formation, ΔfHogas	−80.8 kJ/mol [8]
Standard molar entropy, Sogas	282.9 J/(mol·K) [8]
Heat capacity, cp [9]	55.5 J/(mol·K) at 25 °C [8]

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: ${\displaystyle \scriptstyle \log _{e}P_{mmHg}=}$${\displaystyle \scriptstyle \log _{e}({\frac {760}{101.325}})-10.20778\log _{e}(T+273.15)-{\frac {7217.173}{T+273.15}}+83.18124+8.369119\times 10^{-06}(T+273.15)^{2}}$ obtained from CHERIC

Distillation data

Vapor-liquid Equilibrium for Nitromethane/Ethanol [10] 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 [10] 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

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• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.

References

1. Mallinckrodt Baker
2. Haynes, p. 3.414
3. Haynes, p. 6189
4. Haynes, p. 3.576
5. Haynes, p. 6.182
6. Haynes, p. 6.231
7. Haynes, p. 6.69
8. Haynes, p. 5.20
9. "Pure Component Properties". Chemical Engineering Research Information Center. Retrieved 20 May 2007.
10. "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved 20 May 2007.

Cited sources

• Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. ISBN   978-1439855119.

Further reading

• Linstrom, Peter (1997). "NIST Standard Reference Database". National Institute of Standards and Technology. doi:10.18434/T4D303.