{{Chembox <!-- Images --> | ImageFile = | ImageSize = <!-- Names --> | IUPACName = | OtherNames = Glycerol ester of rosin; Glyceryl abietate; Ester gum; Resin acids and rosin acids, esters with glycerol <!-- Sections --> | Section1 = {{Chembox Identifiers | CASNo = 8050-31-5 | UNII = SD112V492J | EINECS = 232-482-5 | PubChem = | SMILES = }} | Section2 = {{Chembox Properties | Formula = | MolarMass = | Appearance = Yellow solid<ref name=GESTIS>{{GESTIS|ZVG=123046}}</ref> | Density = | MeltingPtC = 62-87 | MeltingPt_ref = <ref name=GESTIS/> | BoilingPt = | Solubility = Insoluble<ref name=GESTIS/> }} | Section3 = {{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }}
'''Glycerol ester of wood rosin (GEWR)''', also known as '''glyceryl abietate''', '''gum rosin''' or '''ester gum''', is an oil-soluble food additive (E number E445). The food-grade material is used in foods, beverages, and cosmetics to keep oils in suspension in water,<ref>[http://www.inchem.org/documents/jecfa/jecmono/v35je05.htm WHO Food Additives Series 35: 836. Glycerol ester of wood rosin]</ref> and its name may be shortened in the ingredient list as '''glycerol ester of rosin'''. It is also used as an ingredient in the production of chewing gum and ice cream.
To make the glycerol ester of wood rosin, refined wood rosin (for example, from solvent extraction of aged pine stumps) is reacted with glycerin to produce the glycerol ester.
Glycerol ester of wood rosin is an alternative to brominated vegetable oil in citrus oil-flavored soft drinks. In some cases, both ingredients are used together.
== References == {{reflist}}
==External links== *[http://www.astm.org/Standards/D804.htm Standard Terminology Relating to Pine Chemicals, Including Tall Oil and Related Products]
Category:Resins Category:Food additives Category:Adhesives Category:E-number additives