WATER-SOLUBLE METAL WORKING FLUID COMPOSITION, COOLANT, USAGE OF AMINE COMPOUND AS GAS-PHASE FUNGICIDE, GAS-PHASE ANTIFUNGAL METHOD, AND METAL WORKING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a water-soluble metal working fluid composition capable of controlling fungus growth in a gas-phase.SOLUTION: A water-soluble metal working fluid composition includes an amine compound having a ≥4C linear, branched or cyclic saturated hydrocarbon group, wherein the pH when used is kept not lower by >1 than a pH when the amine compound is neutralized with a 1/2 equivalent acid.