... .1Vapor Residue, PPm≤100AppearanceColorless, No turbidOdorNo Strange Stench Application:Refrigerant for CFC-12 substitute. 1.HFC-134a is one of ... odorless,nonexplosive,inflammable material. 4.It is widly applied as refrigerant in auto air-condition,refrigerator,,commercial refrigeration ,central air- ... beenused in areas such as medicine,pesticide,cosmetics and cleaning. refrigerant gas cylinder r 134a