Refrigerants -- Designation system
This standard has been revised by ISO 817:2014
ISO 817:2005 provides an unambiguous system for numbering and assigning composition-designating prefixes to refrigerants. Tables listing the refrigerant designations are included. It is intended to be used with other relevant safety standards such as ISO 5149, IEC 603352-24 and IEC 60335-2-40.