It is a pentaerythritol ester of rosin, which is made from gum rosin through esterification with pentaerythritol, which with the properties of low volatility, high viscosity, excellent heat and aging stability, excellent polymer compatibility etc. It is a good tackifying resin. Specificationsú¦ Color (Gardner Grade with Toluene 1:1):5max Color (Solid, Gardner): 7+ Max. Softening point (Ring & Ball), oC: 100í+2 Acid value, (mgKOH/g), Max: 15 Solubility in Toluene (1:1): Clear VOC: 0.5% max FDA Status: RT100 meets the ingredient requirements of the following section of the Code of Federal Regulations, Title 21 when used according to the regulations and any limitations that may apply: 175.105 Adhesives 175.300 Resinous & Polymeric Coatings in paper bag 25kgs net each, or in big-bag, 800kgs net each