Glycerol ester of wood rosin

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

CAS Number

* 8050-31-5

EC Number |

* 232-482-5

UNII |

* SD112V492J

Properties
Appearance  | Yellow solid[1]
Melting point |  62–87 °C (144–189 °F; 335–360 K)[1]

Solubility in water

| Insoluble[1]

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

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,[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.

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

1. ↑ 1.0 1.1 1.2 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

## External links

* Standard Terminology Relating to Pine Chemicals, Including Tall Oil and Related Products

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