Chloromethane (data page)

This page provides supplementary chemical data on chloromethane.

Safety data sheet

The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the safety data sheet for this chemical from a reliable source such as SIRI, and follow its directions. SDS for chloromethane is available at Supelco Inc

Structure and properties

Structure and properties
Index of refraction,^[1] n_D	1.3389
Abbe number	?
Dielectric constant,^[2] ε_r	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

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, Δ_fusH^o	6.43 kJ/mol
Std entropy change of fusion, Δ_fusS^o	36.66 J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	21.535 kJ/mol at –24.21 °C 20.09 kJ/mol at 20 °C
Std entropy change of vaporization, Δ_vapS^o	86.51 J/(mol·K) at –24.21 °C
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	? kJ/mol
Standard molar entropy, S^o_solid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	–86.37 kJ/mol at 25 °C
Standard molar entropy, S^o_liquid	140.08 J/(mol K)
Heat capacity, c_p	81.2 J/(mol K) at 15 °C
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	–83.68 kJ/mol
Standard molar entropy, S^o_gas	234.36 J/(mol K) at 100 kPa
Enthalpy of combustion, Δ_cH^o_gas	–764.0 kJ/mol
Heat capacity, c_p	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

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

UV-Vis
λ_max	? 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

^ "Methyl Chloride". Inchem. Retrieved 30 May 2007.
^ "Dielectric Constants Chart". ASI Instruments. Archived from the original on 29 May 2007. Retrieved 30 May 2007.
^ Air Liquide Gas Encyclopedia
^ Lange's Handbook of Chemistry, 10th ed. pp. 1661–1663
^ ^a ^b "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved 30 May 2007.
^ Lange's Handbook of Chemistry 10th ed, pp. 1522–1524

Linstrom, Peter (1997). "NIST Standard Reference Database". National Institute of Standards and Technology. doi:10.18434/T4D303. {{cite journal}}: Cite journal requires |journal= (help)

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

[inchem-1] "Methyl Chloride". Inchem. Retrieved 30 May 2007.

[2] "Dielectric Constants Chart". ASI Instruments. Archived from the original on 29 May 2007. Retrieved 30 May 2007.

[3] Air Liquide Gas Encyclopedia

[4] Lange's Handbook of Chemistry, 10th ed. pp. 1661–1663

[cheric_p-5] "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved 30 May 2007.

[lange1522-6] Lange's Handbook of Chemistry 10th ed, pp. 1522–1524

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