ICOR International has introduced the HFC refrigerant NU-22Bâ„¢ (R-422B). It is safety classified A1, nontoxic, nonflammable, and compatible with mineral oil, alkylbenzene, and polyolester oils.
Company officials said that the refrigerant has greater refrigerating capacity, and its operating characteristics are closer to HCFC-22 than its predecessor, NU-22 (R-417A). R-422B is being used to replace R-22 in residential through industrial applications. It is packaged in 25-pound disposable and bulk cylinders.