DESCRIPTION

Glycerol Ester of Wood Rosin occurs as a hard, pale amber-colored resin (color N or paler as determined by ASTM Designation D 509). It is produced by the esterification of pale wood rosin with food-grade glycerin. The rosin is obtained by solvent extraction of aged pine stumps, followed by a liquid-liquid solvent refining process. When intended for use in chewing gum base, the product is usually purified by steam stripping, but when intended for use in adjusting the density of citrus oils for beverages, it is purified by countercurrent steam distillation. It is soluble in acetone, but it is insoluble in water.