gum rosin is important raw materials for the manufactire of Soap, Paper, Paint, Rubber, Resin, Electric and Synthetic Orgainc. standard for gum rosin ww gradeAppearance: transparent solidColor: pale yellowsoftening point(r&b)min.: 76Acid value,mgkoh/g, min.: 166Alcohol insoluble substance:0.03Unsaponifiable matter: 5% max.Ash:0.02% max