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...Hyvolt ii electrical insulating oil marketing specification this is produced from a severely hydrotreated naphthenic to meet the requirements defined in astm d products have very low pour points and excellent oxidation stability test description method specifications typical values physical properties min max viscosity cst at c specific gravity flash point coc color l aniline interfacial tension dynes cm visual examination clear bright dielectric breakdown hz disk electrodes kv vde mm gap impulse voltage power factor gassing tendency chemical hr sludge by mass total acid number mg koh g pressure vessel minutes inhibitor content wt corrosive sulfur noncorrosive water ppm neutralization...