Glycerol ester of wood rosin

Glycerol ester of wood rosin, also known as glyceryl abietate 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,[2] 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. Similar, less pure materials (glycerol ester of gum rosin) are used as a component of certain low-cost adhesives.[3]

Glycerol ester of wood rosin
Names
Other names
Glycerol ester of rosin; Glyceryl abietate; Ester gum; Resin acids and rosin acids, esters with glycerol
Identifiers
ECHA InfoCard 100.029.524
EC Number
  • 232-482-5
E number E445 (thickeners, ...)
UNII
Properties
Appearance Yellow solid[1]
Melting point 62–87 °C (144–189 °F; 335–360 K)[1]
Insoluble[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

To make the glycerol ester of wood rosin, refined wood rosin 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
  1. Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
  2. WHO Food Additives Series 35: 836. Glycerol ester of wood rosin
  3. Rosin Resins
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