Description

Glycerol Ester Of Rosin (CAS NO 8050-30-4) is a pale, thermoplastic resin derived from the esterification of rosin with glycerol. This compound is valued for its excellent tackifying properties, good aging characteristics, and compatibility with a wide range of polymers. It serves as a critical raw material for industrial manufacturers requiring consistent adhesive performance and film-forming capabilities.

Application

• Pressure-Sensitive Adhesives (PSAs): A primary tackifier for tapes, labels, and protective films.
• Hot-Melt Adhesives: Key component providing tack and adhesion in packaging, woodworking, and non-woven applications.
• Chewing Gum Base: Acts as a masticatory substance and texturizer in food-grade formulations.
• Inks and Coatings: Used as a modifier to improve gloss, hardness, and drying time.
• Polymer Modification: Enhances the tack and flexibility of elastomers like SBS and SIS in rubber compounds.
• Sealants and Caulks: Imparts initial tack and improves adhesion to substrates.

Basic Information

Product Name	Glycerol Ester Of Rosin
CAS No.	8050-30-4
Molecular Formula	Mixture (C63H92O6 approximate for glyceryl triabietate)
Molecular Weight	~945.4 g/mol (approximate)
Synonyms	Glycerol Rosinate; Ester Gum; Glyceryl Rosinate; Rosin Glycerol Ester; Glycerol Ester of Wood Rosin; Glyceryl Triabietate; GEWR; Food Additive E445
EINECS	232-482-5

Quality Control

Our Glycerol Ester Of Rosin is produced under a stringent quality management system. We offer grades compliant with relevant industry standards, including Food Chemical Codex (FCC) for food-contact applications. Every batch is tested for key parameters such as acid value, softening point, and color. Certificates of Analysis (COA) are available upon request to ensure traceability and specification compliance for your production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flames. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Pale yellow to amber solid
Softening Point (Ring & Ball)	80 - 90 °C
Acid Value	≤ 10 mg KOH/g
Saponification Value	150 - 170 mg KOH/g
Color (Gardner)	≤ 8
Identification (IR)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.