28103-66-4

Basic information

• Product Name: Hydrochlorofluorocarbon-235 (HCFC-235)
• Synonyms: Hydrochlorofluorocarbon-235 (HCFC-235);1-Chloro-1,2,2,3,3-pentafluoropropane
• CAS NO: 28103-66-4
• Molecular Formula: C₃H₂ClF₅
• Molecular Weight: 168.49
• Product Categories: refrigerants
• Mol File: 28103-66-4.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 7.97°C (rough estimate)
• Appearance: /
• Density: 1.1948 (estimate)
• Refractive Index: 1.2457 (estimate)
• CAS DataBase Reference: Hydrochlorofluorocarbon-235 (HCFC-235)(CAS DataBase Reference)
• NIST Chemistry Reference: Hydrochlorofluorocarbon-235 (HCFC-235)(28103-66-4)
• EPA Substance Registry System: Hydrochlorofluorocarbon-235 (HCFC-235)(28103-66-4)

Safety Data

• Hazardous Substances Data: 28103-66-4(Hazardous Substances Data)

Upstream product

• 1599-41-3 2,2,3-trichloro-1,1,1,3,3-pentafluoropropane 
• 2730-62-3 2-chloro-1,1,1-trifluoropropene 
• 5406-70-2 1,1,1,2,3,3-hexachloropropane 

Relevant articles and documents

PROCESS FOR MAKING TETRAFLUOROPROPENE

The present invention describes a process for making CF3CH═CHF (HFO-1234ze). The process involves the addition of carbon tetrachloride (CCl4) to 1,2-dichloroethylene to form CCl3CHClCHCl2. The compound CCl3CHClCHCl2 thus can then either be treated with HF to produce CF3CHClCHClF as the main product, or it can be converted to CCl2═CHCHCl2 (1230za) by dechlorination. CCl2═CHCHCl2 can be treated with HF such that the main product obtained is CF3CHClCHClF. CF3CH═CHCl may be produced as a by-product, but upon treatment with HF, it affords the compound CF3CHClCHClF. The desired compound, CF3CH═CHF (HFO-1234ze), is obtained as a trans/cis mixture by dehydrochlorination of CF3CH2CHClF or by dechlorination of CF3CHClCHClF.

PROCESS FOR THE PREPARATION OF 1,1,1,3,3-PENTAFLUOROPROPANE AND 1,1,1,2,3-PENTAFLUOROPROPANE

A process is disclosed for the manufacture of CF3CH2CHF2 and CF3CHFCH2F. The process involves (a) reacting hydrogen fluoride, chlorine, and at least one halopropene of the formula CX3CCl=CClX (where each X is independently F or Cl) to produce a product including both CF3CCl2CClF2 and CF3CClFCCl2F; (b) reacting CF3CCl2CClF2 and CF3CClFCCl2F produced in (a) with hydrogen to produce a product including both CF3CH2CHF2, and CF3CHFCH2F; and (c) recovering CF3CH2CHF2 and CF3CHFCH2F from the product produced in (b). In (a), the CF3CCl2CClF2 and CF3CClFCCl2F are produced in the presence of a chlorofluorination catalyst including a ZnCr2O4/crystalline α-chromium oxide composition, a ZnCr2O4/crystalline α-chromium oxide composition which has been treated with a fluorinating agent, a zinc halide/α-chromium oxide composition and/or a zinc halide/α-chromium oxide composition which has been treated with a fluorinating agent.