Description

Rosin CAS NO 85026-55-7 is a solid, natural resin derived primarily from pine trees, valued for its tackifying, adhesive, and film-forming properties. This versatile material serves as a critical raw material in numerous industrial formulations, providing essential performance characteristics. It is a fundamental component for manufacturers in the adhesives, coatings, inks, rubber, and polymer industries seeking reliable and consistent natural resin inputs.

Application

• Adhesives & Sealants: A key tackifier and modifier in hot-melt, pressure-sensitive, and construction adhesives.
• Printing Inks: Used as a resinous vehicle to improve gloss, adhesion, and drying properties.
• Rubber Compounding: Acts as a processing aid and tackifier in tire manufacturing and other rubber products.
• Coatings & Varnishes: Imparts hardness, gloss, and water resistance to protective and decorative coatings.
• Paper Sizing: Employed in the papermaking process to control water absorption and improve printability.
• Soldering Flux: A core ingredient in flux formulations to facilitate metal joining by removing oxides.
• Polymer Modification: Used to modify the properties of synthetic polymers and elastomers.
• Chewing Gum Base: Food-grade rosin is used as a masticatory substance in gum formulations.

Basic Information

Product Name	Rosin
CAS No.	85026-55-7
Molecular Formula	Mixture (Primarily C20H30O2)
Molecular Weight	~302.45 g/mol (for abietic acid)
Synonyms	Colophony; Pine Rosin; Gum Rosin; Wood Rosin; Tall Oil Rosin; Abietic Acid Resin; Rosin Gum; Ester Gum (modified forms); UNII-72N1P6B49K
EINECS	285-426-1

Quality Control

Our Rosin is produced and tested to meet stringent quality parameters for industrial applications. We offer various grades, including gum rosin, wood rosin, and tall oil rosin, with specifications tailored to end-use requirements. Each batch is accompanied by a Certificate of Analysis (COA) detailing key parameters such as acid value, softening point, and color. Quality systems are in place to ensure batch-to-batch consistency and reliability for our global B2B customers.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Recommended storage temperature is between 15°C and 25°C. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Transparent, pale yellow to amber solid
Acid Value (mg KOH/g)	150 - 180
Softening Point (Ring & Ball, °C)	70 - 85
Saponification Value	160 - 190
Color (Gardner)	≤ 8
Ash Content (%)	≤ 0.05
Unsaponifiable Matter (%)	≤ 8

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