Record Display for the EPA National Library CatalogRECORD NUMBER: 16 OF 21
|Main Title||Material Compatibility Evaluations of HFC-245ca, HFC-245fa, HFE-125, HFC-236ea, and HFC-236fa.|
|Author||Ratanaphruks, K. ; Tufts, M. W. ; Ng, A. S. ; Smith, N. D. ;|
|CORP Author||Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.|
|Report Number||EPA-68-D4-0005; EPA/600/A-96/129;|
|Additional Subjects||Hydrofluorocarbons ; Compatibility ; Stability ; Chemical reactivity ; Elastomers ; Plastics ; Metals ; Desiccants ; Rubbers ; Emissions ; Performance tests ; Refrigerants ; Alternatives ; Environmental chemical substitutes ; Hydrofluoroethers ; HFC-245ca ; HFC-245fa ; HFE-125 ; HFC-236ea ; HFC-236ta|
The paper presents data pertaining to stability and material compatibilities determined for HFC-245ca. HFC-245fa, HFE-125, HFC-236ea, and HFC-236fa. Following ASHRAE guidelines, material compatibility tests using 11 elastomers, 4 plastics, 5 metals, and 4 desiccants were conducted with the aforementioned refrigerants in both the presence and the absence of a polyolester (POE) lubricant. The metals (copper, steel, aluminum, brass, and bronze) were found to be compatible with both the refrigerants and the POE oil. Trace amounts of fluorine-containing byproducts were detected by gas chromatography/mass spectroscopy for all four desiccants. Based on physical characteristics, unsatisfactory performance across all refrigerants with and without lubricant was found with fluoropolymers, hydrogenated nitrile butyl rubber, natural rubber, and Neoprene.