Refrigerator oil and hydraulic fluid composition for refrigerators
A refrigerating machine oil having a kinematic viscosity at 100° C. of 0.5 mm 2 /s or more and 2.5 mm 2 /s or less, a distillation end point in gas chromatography distillation of 380° C. or more and 450° C. or less, and a sulfur content of 0.001 mass % or more and 0.2 mass % or less.
1. A working fluid composition for a refrigerating machine comprising:
a refrigerating machine oil having
a kinematic viscosity at 100° C. of 0.5 mm 2 /s or more and 2.5 mm 2 /s or less,
an initial boiling point in gas chromatography distillation of 250° C. or less,
a distillation end point in gas chromatography distillation of 380° C. or more and 450° C. or less,
an aniline point of 100° C. or less,
a % C A in n-d-M ring analysis of 5 or less, and
a sulfur content of 0.001 mass % or more and 0.2 mass % or less; and
a refrigerant.
2. The working fluid composition for a refrigerating machine according to claim 1 , wherein the refrigerating machine oil has an initial boiling point in gas chromatography distillation of 240° C. or less.