General grade :Electrical grade;Food grade;Medical grade Spec. ItemAppearanceOdorPurity ≥ %Denstiy (20οC), g/cm3Acid value, mgKOH/h ≤Moisture, % ≤Color, (Pt-Co) ≤Refractive index (20οC)Viscosity (20οC), mPa.sElectric volume resistivity, ×10 9.mUV absorption value (220-230nm)