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 It is based on methane, except that two of the four hydrogen atoms have been replaced by fluorine atoms.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 CH2F2 instead of CH4 for normal methane.
|Critical pressure (pc)||5.83 MPa|
|Critical temperature (Tc)||78.45 °C (351 K)|
|Compressibility factor (Z)||0.9863|
|Heat capacity at constant pressure (Cp) at 21 °C (70 °F)||0.043 kJ·mol−1·K−1|
|Heat capacity at constant volume (CV) at 21 °C (70 °F)||0.034 kJ·mol−1·K−1|
|Heat capacity ratio (κ)||1.253|
WIPO PUBLISHES PATENT OF ARKEMA FRANCE FOR "TERNARY HEAT-TRANSFER FLUIDS COMPRISING DIFLUOROMETHANE, PENTAFLUOROETHANE AND TETRAFLUOROPROPENE" (FRENCH INVENTOR)
Nov 17, 2011; GENEVA, Nov. 17 -- Publication No. WO/2011/141655 was published on Nov. 17. Title of the invention: "TERNARY HEAT-TRANSFER FLUIDS...
WIPO ASSIGNS PATENT TO E. I. DU PONT DE NEMOURS AND COMPANY FOR "COMPOSITIONS COMPRISING TETRAFLUOROPROPENE AND DIFLUOROMETHANE AND USES THEREOF" (AMERICAN INVENTORS)
Jul 18, 2011; GENEVA, July 18 -- Publication No. WO/2011/084813 was published on July 14. Title of the invention: "COMPOSITIONS COMPRISING...