| Customization: | Available |
|---|---|
| Type: | Resin Rosin |
| Grade: | First Grade |
|
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Gum rosin is a natural resin extracted from pine tree sap, known for its eco-friendly, non-toxic, and biodegradable properties. This light yellow to transparent solid substance emits a faint pine scent, with a density ranging from 1.07-1.09g/cm³ and a softening point of 70-85ºC. With a acid value of approximately 150-180mg KOH/g, it exhibits excellent solubility in organic solvents like ethanol and acetone but is insoluble in water.
| Property | Specification | Test Method/Reference |
|---|---|---|
| Basic Information | ||
| Product Name | Premium Grade Masson Pine Rosin | - |
| CAS No. | 8050-09-7 | CAS Database |
| EPA Registry | Rosin (8050-09-7) | EPA Substance Registry System |
| Physical Properties | ||
| Appearance | Dark yellow transparent solid | Visual inspection |
| Form | Solid lumps or granules | - |
| Color | Dark yellow | Visual comparison |
| Melting Point | 70-72°C | ASTM D87 |
| Density | 1.07 g/cm³ | ASTM D792 |
| Specific Gravity | 1.07-1.08 | ASTM D792 |
| Flash Point | 180°C | ASTM D93 |
| Chemical Properties | ||
| Solubility | Soluble in alcohol, benzene, ether | USP <611> |
| Water Solubility | Insoluble in water | USP <611> |
| Acid Value | ~166 mg KOH/g (typical) | ASTM D465 |
| Stability & Safety | ||
| Stability | Stable. Combustible | - |
| Incompatibilities | Oxidizing agents | - |
| Storage Temperature | Room Temperature | - |
| Exposure Limits | TWA 0.1 mg/m³ (NIOSH) | NIOSH Standards |
| Merck Index | 14,8266 | Merck Reference |
| Quality Standards | ||
| Grade | Premium Grade (First Grade) | GB/T 8145-2003 |
| Source | Pinus massoniana Lamb | - |
| Packaging | ||
| Standard Packaging | 25kg/bag (PP woven bag with PE liner) | - |
Gum rosin is valued for its outstanding adhesive and insulating properties, making it widely used in various industrial sectors. In the electronics industry, it serves as a high-quality soldering flux material to enhance PCB soldering quality. In adhesive manufacturing, it is a key ingredient in pressure-sensitive adhesives and hot melt adhesives. In instrument maintenance, professional violin rosin can improve string friction and enhance sound performance. Additionally, gum rosin is utilized in the pharmaceutical industry as a plaster base, in personal care products as a soap additive, and in the rubber industry as an elastic enhancer.
Available in different grades such as industrial, instrument, and pharmaceutical grades, gum rosin is typically packaged in 25kg bags of chunks or granules for industrial use. It should be stored in a cool, dry place away from heat sources, with different grades not to be mixed, and used in well-ventilated areas. With its natural eco-friendly properties, stable chemical nature, and wide range of applications, gum rosin is an essential raw material in industrial production.
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