... Refrigerant Gas,such as : 1. R-134a,R-22,R-23 2.R404a,R-406a,R-407C,R-410a 3.R507,R-502 R134A RefrigerantCharacter USES:Do ... refrigeration system flow easily. The heat transfer performance than 134a R R, therefore the 12 can greatly reduce the dosage of ... refrigerant. At room temperature for a colorless gas pressure in itself, is a colorless transparent liquid R12 substitutes.Chemical properties ...