... yellowyellow brownyellow red Correspond to the Standard Glass Color Piece of RosinSoftening Point (R&B),°C, min767574Acid Value, (mgKOH/ ... and uses: It is a kind of natural resin, mainly composed of various kinds of resin acids, it can be dissolved ... material for the production of paper, coatings, inks, rubber, soaps, electronic industrial products, food grade ester gum, rosin ester resins etc.3. ...