Refined Castor Oil ( First Special Grade) Appearance : Pale Yellow, Viscous, Clear Liquid Viscocity- Gardner- Holdt : U-V Moisture, Impurities And Volatile Matter (M.I.V) : 0.25% Maximum Acid Value : 2.00 KOH mg/g Maximum Free Fatty Acid As Oleic Acid (F.F.A) : 1% Maximum Iodine Value : 82-90 Saponification Value : 177-187 Acetyl Value : 139 Minimum Hydroxil Value : 160-168 Relative Density 15/15.5 c. ; 0.958-0.969 Refractive Index : 1.477-1.481 Unsaponifiable Matter : 1% Maximum Recinolleic Acid : 85% Minimum Colour on Lovibond in 5.25 Cell : Yellow 20.0 Maximum , Red 2.00 Maximum