... ~ 200mgKOH / g. Naphthenate light color, tasteless, with viscosity, high purity. Refined degreased Naphthenic AcidRefined petroleum products were isolated ... is small, high-acid crude, free fatty acids, viscosity. Test items Quality standards appearanceyellow transparent oily liquid crude acid value ... mgKOH/g content %≥80 Fatty acids content %≤2dynamic viscosity(40°C)≥100mm2/s water content %≤1 color ( ...