Historical
ANSI/ASHRAE 34-1992
Number Designation and Safety Classification of Refrigerants (includes supplements)
This standard is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It also establishes a uniform system for assigning reference numbersand safety classifications to refrigerants.
Content Provider
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]