Method for 1, 1, 1, 3, 3-pentafluoropropane

A process of purification of 1,1,1,3,3-pentafluoropropane characterized by contacting at least one extraction agent selected from the group consisting of

• (a) a fluorohydrocarbon compound corresponds to the general formula (I):
• CxFyHz (I)
• in which x is an integer from 3 to 10, y is an integer from 2 to 22 and z is an integer from 0 to 6;
• (b) an amine compound corresponds to the general formula (II):
• R1R2R3N (II)
• in which R1, R2 and R3 are fluoroalkyl groups each having 1-10 carbon atoms, respectively, and R1, R2 and R3 may have at most two hydrogen atoms, respectively;
• (c) an ether compound corresponds to the general formula (III):
• R4OR5 (III)
• in which R4 and R5 are alkyl groups each having 1-10 carbon atoms, respectively, and at least one of R4 and R5 contains one fluorine atom;
• and
• (d) a chlorohydocarbon compound corresponds to the general formula (IV):
• ClClmHn (IV)
• in which 1 is an integer from 3 to 10, m is an integer from 2 to 22 and n is an integer from 0 to 6
• with a mixture comprising 1,1,1,3,3-pentafluoropropane and hydrogen fluoride so as to form a liquid mixture and separating the liquid mixture into two liquid layers, followed by obtaining an extraction agent layer including 1,1,1,3,3-pentafluoropropane and the extraction agent as the main components, and separatively recovering 1,1,1,3,3-pentafluoropropane from the extraction agent layer.