It is a kind of natural resin, mainly composed of various kinds of resin acids, it can be dissolved easily in many organic solve SpecificationsAppearance:Transparent SolidColor:pale yellowSoftening Point (R&B),°C, min:76Acid Value, (mgKOH/g), min:166Alcohol insoluble Substance ,(%) , max:0.03Unsaponifiable matter, (%) ,max:5Ash, (%) ,max:0.02Correspond to the Standard Glass Color Piece of Rosin2. ...