| 摘要 |
PURPOSE:To provide a refrigeration medium composed of trifluorotri- fluoromethylpropane, free from destruction of ozone layer, excellent in incombustibility and thermal stability and useful for refrigerator use, etc. CONSTITUTION:The objective refrigeration medium is composed of 1,1.1- trifluoro-2-trifluoromethylpropane and has physical properties such as 22 deg.C boiling point, 162 deg.C critical temperature, 37.2Kcal/kg latent heat of vaporization (0 deg.C) and 0 coefficient of ozone layer destruction. |
