naphthenic acid naphthenic acidNaphthenate light color, tasteless, with viscosity, high purity. test itemsquality standardsappearanceyellow transparent oily liquidcrude acid value≥160mgKOH/gPure acid value≥210mgKOH/gcontent %≥70Fatty acids content %≤2dynamic viscosity(40°C)≥100mm2/swater content %≤1color (Fe-Co) ≤11