| abstract |
The present invention relates to a heat transfer composition comprising a refrigerant, a lubricant and a stabilizer, wherein the refrigerant comprises 39 to 45% by weight of difluoromethane (HFC-32), 1 to 4% by weight of pentafluoroethane (HFC-) 125), and from 51 to 57% by weight of trifluoroiodomethane (CF 3 I), wherein the lubricant comprises a polyol ester (POE) lubricant and/or a polyvinyl ether (PVE) lubricant, the stabilizer comprising comprises an alkylated naphthalene, and optionally but preferably an acid depleting moiety. |