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Glycerol esters of wood rosins, 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, and its name may be shortened in the ingredient list as glycerol ester of rosin.
Glycerol esters of wood rosins is also used as an ingredient in the production of chewing gum and ice cream.
CAS: 8050-31-5
MF: C23H36O4
MW: 376.52954
EINECS: 232-482-5
Synonyms
ESTAR GUM 8 BG;ENDERE S;GLYCERYL HYDROGENATED ROSINATE;STAYBELITE ESTER 10;STAYBELITE ESTER 5;Rosin modified resin;138A;138AL
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.
Glycerol esters of wood rosins is a complex mixture of glycerol di- and triesters of resin acids from wood rosin, with a residual fraction of glycerol monoesters.
Besides these esters, neutrals (non-acidic saponifiable and unsaponifiable substances) and residual free resin acids are present.
Glycerol esters of wood rosins is obtained by the solvent extraction of aged pine stumps (Pinus palustris (longleaf) and Pinus elliottii (slash) species) followed by a liquid-liquid solvent refining process.
The refined wood rosin composed of approximately 90% resin acids and approximately 10% neutrals.
The resin acid fraction is a complex mixture of isomeric diterpenoid monocarboxylic acids having the typical empirical formula C20H30O2, of which the main component is abietic acid.
Glycerol esters of wood rosins is purified by steam stripping or by countercurrent steam distillation.
Glycerol esters of wood rosins is a polyunsaturated, hydrogenated, fatty acid that is used as a cross-linking agent.
Glycerol esters of wood rosins is a mixture of glycerin and calcium stearate with traces of choroidal neovascularization.
Glycerol esters of wood rosins is used in the production of pharmaceutical preparations to increase the viscosity and stability of the formulation.
Glycerol esters of wood rosins has been shown to have a low thermal expansion coefficient, which allows it to be used as a hydrogen bond.
Glycerol esters of wood rosins also has an allergic effect on skin and can cause irritation if touched or inhaled.
The transport rate for Glycerol esters of wood rosins is 0.5 kilometers per hour at 20 degrees Celsius.
Glycerol esters of wood rosins also named glyceryl rosinate or ester gum, it's made of gum rosin and glycerol ester with stabilizing treatment.
Glycerol esters of wood rosins can be perfectly dissolved in polymers.
Glycerol esters of wood rosins comes with excellent adhesivity to be widely used in various adhesive manufactures, it is light color and economic type of tackifier material.
Glycerol esters of wood rosins can be dissolved in many solvent such as petroleum hydrocarbons, aromatics, ester, ketone, gasoline, benzene, acetic ether, acetone, turpentine and so on.
Cannot be dissolved in water and alcohol.
With light color, low-odor, anti-oxidization, thermal stability, strong adhesivity and other features.
Can be widely used with many polymers such as NR, CR, SBR, EVA, SIS, SBS etc.
Glycerol esters of wood rosins Chemical Properties
density: 1.063g/cm3 at 20℃
vapor pressure: 4Pa at 20℃
FEMA: 4226 | GLYCEROL ESTER OF ROSIN
solubility: Chloroform (Slightly), Ethyl Acetate (Slightly)
form: Solid
Cosmetics Ingredients Functions: PERFUMING
FILM FORMING
Cosmetic Ingredient Review (CIR): Glycerin Rosin Ester (8050-31-5)
LogP: 3.97 at 25℃ and pH6.1-6.59
CAS DataBase Reference: 8050-31-5
EPA Substance Registry System: Glycerol esters of wood rosins (8050-31-5)
Uses
Glycerol esters of rosin—often called ester gum—are not a single tidy molecule.
They are a collection of compounds built from modified rosin acids, mainly abietic-type structures.
Although their exact composition varies, they behave reliably enough that food and chemical companies treat them as standard, predictable ingredients.
In the food sector, you’ll find them in gum bases, flavor emulsions, and most famously, in citrus soft drinks as a beverage-weighting agent to keep the flavor evenly mixed.
Resin acids, esters with glycerol, identified by the CAS number 8050-31-5, are a class of chemical compounds derived from natural resin acids, which are typically obtained from pine trees and other coniferous plants.
These substances are characterized by their complex mixture of fatty acids and resin acids, which are esterified with glycerol.
They exhibit properties such as being viscous, sticky, and having a relatively high molecular weight.
These esters are generally soluble in organic solvents but have limited solubility in water. They are commonly used in various applications, including adhesives, coatings, and inks, due to their excellent film-forming properties and adhesion characteristics.
Additionally, they can provide flexibility and durability to formulations.
The chemical structure of resin acids contributes to their reactivity and functionality, making them valuable in industrial applications.
Safety data indicates that while they may pose some health risks upon prolonged exposure, they are generally considered safe when handled properly in accordance with safety guidelines.
Food-grade rosin glycerol ester
Glycerol esters of wood rosins has excellent emulsifying and tackifying properties.
Glycerol esters of wood rosins can be used as a gum base to give gum foaming, shaping, chewing resistance and a good taste.
Glycerol esters of wood rosins can be used for depilation of chickens and ducks, and can also be used as an emulsifier stabilizer in beverages, etc.
Industrial-grade Glycerol esters of wood rosins
Glycerol esters of wood rosins can be widely used in polymers such as EVA, acrylic resin, polyurethane, SIS and SBS.
1. Hot melt pressure-sensitive adhesive: tape adhesive, double-sided adhesive, etc.
2. Solvent heat-sensitive adhesive: laminating adhesive, etc.
3. Hot melt adhesive: EVA hot melt adhesive, polyamide hot melt adhesive, etc.
4. Sealing adhesive: building sealant, etc.
5. Solvent pressure-sensitive adhesive: tape adhesive, self-adhesive, etc.
6. Floor adhesive, etc.
