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Properties of substance:

difluoromethane

Group of substances:

organic

Physical appearance:

colorless gas

Empirical formula (Hill's system for organic substances):

CH2F2

Structural formula as text:

H2CF2

Molar/atomic mass: 52.03

Melting point (°C):

-136.81

Boiling point (°C):

-51.65

CAS №: 75-10-5



Solubility (g/100 g of solvent):

ethanol: soluble [Ref.]
water: insoluble [Ref.]

Permittivity (dielectric constant):

26.11 (-49.2°C)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-452.3 (g)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

246.7 (g)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

42.9 (g)

Critical temperature (°C):

78.4

Critical pressure (MPa):

5.843

Critical density (g/cm3):

0.4251

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-19, 6-146
  2. Вредные химические вещества: Углеводороды, галогенпроизводные углеводородов. Справочник. - Л.: Химия, 1990. - pp. 281 [Russian]
  3. Промышленные фторорганические продукты: Справочник. - Л.: Химия, 1990. - pp. 54-56 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 790-791 [Russian]
  5. Токсикологический вестник. - 1996. - №1. - pp. 28 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru