GUM ROSIN
GUM ROSIN
Chemical Formula: C??H??O?
Molecular Weight: ~302.45 g/mol
Description:
Gum Rosin, also known as Colophony, is a natural solid resin obtained from the oleoresin of pine trees. It is translucent, brittle, and ranges in color from pale yellow to amber. Gum Rosin is composed mainly of abietic acid and other resin acids. It is widely used in adhesives, coatings, rubbers, inks, and as a raw material for various chemical derivatives.
Applications:
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Adhesive Industry: Used in the production of pressure-sensitive, hot melt, and rubber-based adhesives.
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Paints & Coatings: Acts as a binder and gloss enhancer in varnishes and coatings.
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Rubber Industry: Improves tack and elasticity in rubber compounds.
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Printing Inks: Enhances adhesion and gloss.
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Paper Industry: Used in sizing agents to improve water resistance.
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Soap & Cosmetics: Ingredient in soaps, polishes, and cosmetic formulations.
Key Properties:
| Property | Description |
|---|---|
| Appearance | Pale yellow to amber, brittle solid |
| Odor | Mild, pine-like odor |
| Softening Point | 70 – 80°C |
| Acid Value | 160 – 180 mg KOH/g |
| Color (Gardner Scale) | 4 – 8 |
| Density (@25°C) | ~1.07 g/cm³ |
| Solubility | Insoluble in water; soluble in alcohols, ethers, and organic solvents |
| Ash Content | ≤ 0.02% |
| Stability | Stable under normal storage conditions |
| Grade | WW / WG / N / X / M (depending on color and purity) |
| Packaging | 225 kg net in galvanized iron drums / bags / bulk form |
| Storage | Store in a cool, dry place away from direct sunlight and moisture. Keep containers tightly closed. Avoid excessive heat. |
