abstract |
The present invention provides a refrigerating machine oil containing a base oil, a sulfide compound, and a gallic acid ester, the content of the sulfide compound being 0.01-2.0% by mass with respect to the total amount of the refrigerating machine oil, the content of the gallic acid ester being 10-500 ppm by mass, and the dynamic viscosity of the refrigerating machine oil at 40 DEG C being 3-500 mm2/s. |