Chloroform_(data_page)

Chloroform (data page)

Chemical data page

This page provides supplementary chemical data on chloroform.

Vapor pressure of liquid

P in mm Hg		1	10	40	100	400	760	1520	3800	7600	15200	30400	45600
T in °C		–58.0	–29.7	–7.1	10.4	42.7	61.3	83.9	120.0	152.3	191.8	237.5	—

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

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Structure and properties
Index of refraction, n_D	1.4459 at 19 °C
Abbe number	?
Dielectric constant, ε_r	4.8069 ε₀ at 20 °C
Bond strength	?
Bond length^[1]	C-Cl 1.75 Å
Bond angle^[1]	Cl-C-Cl 110.3°
Dipole moment	1.08 D (gas)^{[citation needed]} 1.04 D^[2]
Magnetic susceptibility	? – Close to that of Teflon
Surface tension	28.5 dyn/cm at 10 °C 27.1 dyn/cm at 20 °C 26.67 dyn/cm at 25 °C 23.44 dyn/cm at 50 °C 21.7 dyn/cm at 60 °C 20.20 dyn/cm at 75 °C
Viscosity^[3]	0.786 mPa·s at –10 °C 0.699 mPa·s at 0 °C 0.563 mPa·s at 20 °C 0.542 mPa·s at 25 °C 0.464 mPa·s at 40 °C 0.389 mPa·s at 60 °C

Phase behavior
Triple point	209.61 K (–63.54 °C), ? Pa
Critical point	537 K (264 °C), 5328.68 kPa
Std enthalpy change of fusion, Δ_fusH^o	8.8 kJ/mol
Std entropy change of fusion, Δ_fusS^o	42 J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	31.4 kJ/mol
Std entropy change of vaporization, Δ_vapS^o	105.3 J/(mol·K)
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	–134.3 kJ/mol
Standard molar entropy, S^o_liquid	? J/(mol K)
Enthalpy of combustion	–473.2 kJ/mol Δ_cH^o
Heat capacity, c_p	114.25 J/(mol K)
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	–103.18 kJ/mol
Standard molar entropy, S^o_gas	295.6 J/(mol K) at 25 °C
Heat capacity, c_p	65.33 J/(mol K) at 25 °C
van der Waals' constants^[4]	a = 1537 L² kPa/mol² b = 0.1022 liter per mole