Refrigerant gas R-500. is a chemical compound registered under CAS number 56275-41-3, with the molecular formula C2H4F2•CCl2F2 and a molecular weight of about 186.96 g/mol. It is also known as Refrigerant gas R-500; dichlorodifluoromethane/ difluoroethane azeotropic mixture. CKSPharm supplies Refrigerant gas R-500. for laboratory research and bulk production; product code 517288. Send an inquiry for purity, packaging, price and lead time.