A refrigerating machine oil composition 1, wherein said {HEAD ~ fatty alcohol} is {TAIL ~ at least an alcohol} selected from a group consisting of n butanolandn pentanol 
is
A refrigerating machine oil composition 1 , wherein said { HEAD ~ fatty alcohol } is { TAIL ~ at least an alcohol } selected from a group consisting of n butanolandn pentanol
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH