Chloromethane (data page)

This page provides supplementary chemical data on chloromethane.

Safety data sheet[edit]

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[edit]

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[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, 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[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
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[edit]

^ "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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