... recognized as one of the main refrigerant working substances to substitute Refrigerant gas R134a ,1,1,1,2-Tetrafluoroethane ,used ... and also been used in areas such as medicine,cosmetics,pesticide Physical Properties Quality Specification Molecular ... .1Critical Pressure,Mpa4.05Evaporating Residue,ppm≤100ODP0AppearanceColourless,No turbidGWP0.29OdorNo strange stenchLiquid Density,g/cm31. ...