Chloromethane (data page)

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This page provides supplementary chemical data on chloromethane.

Material Safety Data Sheet[edit]

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 for chloromethane is available at SUPELCO INC

Structure and properties[edit]

Structure and properties
Index of refraction,[1] nD 1.3389
Abbe number  ?
Dielectric constant,[2] εr 12.9 ε0 at 25 °C
Bond strength  ?
Bond length  ?
Bond angle  ?
Dipole moment 1.9 D
Magnetic susceptibility  ?
Acentric factor 0.153
Critical compressibility 0.268247
Compressibility factor 0.985
Density [3] 1002.9 kg/m3 at -24.2 °C (liquid)
2.55 kg/m3 at -24.2 °C (gas)
2.22 kg/m3 at 0 °C (gas)
2.134 kg/m3 at 15 °C (gas)
Surface tension[4] 19.5 dyn/cm at 0°C
17.8 dyn/cm at 10°C
16.2 dyn/cm at 20°C
Viscosity[5] 0.2280 mPa·s at 0°C
0.1784 mPa·s at 20°C
0.1440 mPa·s at 40°C
Thermal conductivity 10.5 mW/(m·K) at 0 °C

Thermodynamic properties[edit]

Phase behavior
Triple point 175.43 K (–97.72 °C), 870 Pa
Critical point 416 K (143 °C), 6714.4 kPa
Std enthalpy change
of fusion
, ΔfusHo
6.43 kJ/mol
Std entropy change
of fusion
, ΔfusSo
36.66 J/(mol·K)
Std enthalpy change
of vaporization
, ΔvapHo
21.535 kJ/mol at –24.21°C
20.09 kJ/mol at 20°C
Std entropy change
of vaporization
, ΔvapSo
86.51 J/(mol·K) at –24.21°C
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
–86.37 kJ/mol at 25°C
Standard molar entropy,
Soliquid
140.08 J/(mol K)
Heat capacity, cp 81.2 J/(mol K) at 15°C
Gas properties
Std enthalpy change
of formation
, ΔfHogas
–83.68 kJ/mol
Standard molar entropy,
Sogas
234.36 J/(mol K) at 100 kPa
Enthalpy of combustion, ΔcHogas –764.0 kJ/mol
Heat capacity, cp 40.70 J/(mol K) at 25°C
van der Waals' constants[6] a = 757.0 L2 kPa/mol2
b = 0.06483 liter per mole

Vapor pressure of liquid[edit]

P in mm Hg 1 10 40 100 400 760 1520 3800 7600 15200 30400 45600
T in °C   — –92.4 –76.0 –63.0 –38.0 –24.0 –6.4 22.0 47.3 77.3 113.8 137.5

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

log10 of Methyl Chloride vapor pressure. Uses formula: \scriptstyle \log_e P_{mmHg} =\scriptstyle \log_e (\frac {760} {101.325}) - 7.072977\log_e(T+273.15) - \frac {4094.935} {T+273.15} + 59.41150 + 1.092121 \times 10^{-5} (T+273.15)^2 obtained from CHERIC[5]

Spectral data[edit]

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[edit]

  1. ^ "Methyl Chloride". Inchem. Retrieved 30 May 2007. 
  2. ^ "Dielectric Constants Chart". ASI Instruments. Retrieved 30 May 2007. 
  3. ^ Air Liquide Gas Encyclopedia
  4. ^ Lange's Handbook of Chemistry, 10th ed. pp 1661-1663
  5. ^ a b "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved 30 May 2007. 
  6. ^ Lange's Handbook of Chemistry 10th ed, pp 1522-1524

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

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