Colophony CAS 8050-09-7
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Gum Rosin is a type of exudate resin obtained from pine trees. Its chemical composition includes abietic acid, pimaric acid, and neoabietic acid.
- Gum Rosin exhibits solubility in a range of organic solvents.
- It possesses unique chemical reactivity.
- This compound can undergo various chemical reactions
Colophony Description
NAME: Colophony
Synonyms: Gum Rosin / Greek pitch / Wood Rosin / Colophonium / Disproportionated rosin / Rosin
Molecular Formula: C20H30O2
Structure: Gum rosin is a natural resin composed mainly of diterpenoids, which are organic compounds with a specific carbon structure.
Molecular Weight: 302.45
CAS NO.: 8050-09-7
HS code: 38061010
Density: 1.07 g/cm³
Melting point: 100-150 °C
Flashing point: 187 °C
Appearance: Transparent Solid
Solubility: Soluble in alcohol, benzene, ether. Insoluble in water
Package:
Drum: Galvanized iron drum, 225kgs net each drum.
kraft paper bag or plastic intertexture bag, 25kgs net each bag
Storage: Store at room temperature
About Us: With over many years as a certified Colophony manufacturer, we combine innovation with stringent production standards to deliver high-performance product.
Gum Rosin Technical
If you need Gum Rosin MSDS & COA, please contact us.
| Item | Index |
| Appearance | Transparent Solid |
| acid value | 150‑170 |
| Ash, (%),max | 0.02 |
| Imprurity Content | 0.03 MAX |
As a certified Colophony factory, we adhere to strict quality protocols, with every batch undergoing rigorous testing to ensure consistent efficacy and safety.
Wood Rosin Applications
Gum Rosin is used in the formulation of printing inks, varnishes, adhesives (glue), soaps, paper sizing, baking soda, solder flux, and sealing wax.
Rosin is used as a polish in pharmaceuticals and chewing gum, and its E number is E915. Its related glyceride, E445, is used as an emulsifier in soft drinks. In the pharmaceutical industry, rosin is an ingredient in various bandages and ointments.
In industrial applications, rosin is a precursor to solder flux. Lead-tin solder, commonly used in electronics, contains about 1% rosin as a flux core. This helps the molten metal flow and improves the joint by reducing the refractory solid oxide layer on the surface to metal. Rosin often appears as a charred or transparent residue around newly soldered joints.
A mixture of pitch and rosin can be used to create a polished surface for glass, which is crucial in the manufacture of optical components such as lenses.
In construction, small amounts of rosin are added to traditional linseed oil/sand joint fillers.
When mixed with waxes and oils, rosin is a key component of the mysterious fumes. When this gel-like substance is rubbed and stretched quickly, wisps of smoke appear to emerge from the fingertips.
Frequently Asked Questions (FAQ)
Q: What is Colophony Rosin?
A: Colophony (commercially referred to as Gum Rosin, CAS No. 8050-09-7) is a natural, solid resin obtained from pine trees (Pinus spp.) after the distillation of volatile crude turpentine. Chemically, it primarily consists of abietic acid and its isomers. Due to its excellent tackifying, insulating, and film-forming properties, it is widely utilized as a core raw material in hot-melt adhesives, printing inks, synthetic rubber, and electronic soldering fluxes.
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