Process for dehydrating a mineral oil or other solvents for the preparation of moisture-in-oil or moisture-in-solvent standards

摘要

An oil, such as a mineral oil, for example, transformer oil, is contacted with calcium carbide and the mixture is stirred until a liquid phase containing less than 1 ppm water and a solid phase containing Ca(OH)₂ and unreacted CaC₂ are obtained. The oil obtained can be used to give samples of known quantities of water by adding corresponding amounts thereto.