STEPAN MWA-257 is stable in both acidic and alkaline solutions and can be used as an emulsifier and lubricant in synthetic and semi-synthetic metalworking fluids. This high active nonionic surfactant can be used as a component of lubricants, gear and chain oils, metalworking fluids, hydraulic fluids, and plasticizers. This alcohol ethoxylate is soluble in naphthenic and paraffinic oils.