Ester Gum (or glycerol ester of wood rosin), CAS# 8050-30-4, is a glycerol ester, available as Hard, yellow to pale amber-colored resin. Ester Gum is widely used as thickening agent and texture stabilizer in chewing gum and ice cream. It is widely accepted as safe food additive in many countries with E number E445. As a professional supplier and manufacturer of food additives, Foodchem International Corporation has been supplying quality Ester Gum to customers all over the world for over 10 years.