... 2.Solid transparent nature resin 3.Usage: Adhesives, Pigment, Rubber Golden Gum Rosin Colophonygum rosin is important raw materials for the ... to the Standard Glass Color Piece of RosinSoftening Point(R&B),°C, min767574Acid Value,(mgKOH/g), min166165164Alcohol insolubleSubstance ,(%) , max0.030.030 ... , the latest specification will be executed and assured by contract. Golden Gum Rosin Colophony