What is "difluoromethane"

n. (context organic compound English) A dihalogenoalkane in which two of the four hydrogen atoms of methane are replaced by fluorine, used as a refrigerant.

Difluoromethane, also called HFC-32 or R-32, is an organic compound of the dihalogenoalkane variety. It is based on methane, except that two of the four hydrogen atoms have been replaced by fluorine atoms, hence the formula is CHF instead of CH for normal methane.

This page provides supplementary chemical data on difluoromethane.

Property

Value

Critical pressure (p)

5.83 MPa

Critical temperature (T)

78.45 °C (351 K)

Compressibility factor (Z)

0.9863

Heat capacity at constant pressure (C) at 21 °C (70 °F)

0.043 kJ·mol·K

Heat capacity at constant volume (C) at 21 °C (70 °F)

0.034 kJ·mol·K

Heat capacity ratio

1.253