| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-containing hydraulic fluid that inhibits acid generation, suppresses a decrease in pH, and has excellent oxidation stability, when used for the long term, and moreover, prevents such effects from being greatly impaired even if a water-containing hydraulic fluid comprising the acids generated from the degradation.SOLUTION: A water-containing hydraulic fluid comprises compounds represented by general formula (1) of 0.01 mass%-0.8 mass% in total, where Rand Rindependently represent a C1-C3 alkyl group.SELECTED DRAWING: None |
