Rosin
Our rosin, also called colophony or Greek pitch, is a solid lump of resin obtained from the internal trunks of pine trees. It is produced by melting the resin at high temperature, and then drying and hardening the remaining substance. It has no fixed melting point, and its color is burnt yellow or crimson. This product is mainly applied in the flux during the electronic circuit soldering process. We currently produce the polymerized colophony, polypale rosin-145, hydrogenated colophony, and some others.
So far, our product has been exported to such countries as India, Pakistan, Ukraine, Belarus, Colombia, and more. Moreover, we are searching for new agents around the world. Welcome to contact us, if you show interest in our product. We can understand your needs by email, phone, fax, or others.
| Physical Form | White or pale-yellow bulk solid | Odor | Colophony odor |
| Softening Point (Ring and Ball Method) ℃ | 80 | Acid Value (mg KOH/g) | 170 |
| Ethanol-insoluble Matter % | 0.03 | Unsaponifiable Matter Content % | 1.0 |
| Color | Faint yellow | Volatility | / |
| Solubility | It can be dissolved in methyl alcohol, ethanol, isopropanol, or other high-boiling-point solvent. Its color is pale yellow, and no sediment can be found. | ||
| Inspection Item | Unit | Description |
| Physical Form | - | Lump, solid (flake) |
| Color | - | Light white |
| Odor | - | Slight colophony |
| Softening Point | - | 78-80℃ |
| Flash Point | 250℃ | |
| Acid Value | ≥ | 170mgKOH/g |
| Alcohol-insoluble Matter Content | ≤ | 0.030% |
| Hot Water-Soluble Matter Content | ≤ | 0.20% |
| Unsaponifiable Content Matter | ≤ | 5.0% |
| Resin Acids % | - | 92% |
| Four Hydrogen Resin Acid | 30-40 | |
| Dehydroabietic Acid | 10.0 | |
| Abietic Acid | 0.5% | |
| Specific Gravity | 1.08 | |
| Item Name | RHR-301 | |
| Packing | 225kg/barrel |
| Inspection Item | Unit | Description |
| Physical Form | - | Lump, solid(flake) |
| Color | - | lighter than grade two in accordance with the standard color chart |
| Odor | - | Slight colophony |
| Softening Point | - | 141~145℃ |
| Acid Value | ≥ | 230~248mgKOH/g |
| Alcohol-insoluble Substance | ≤ | 0.030% |
| Hot Water-Soluble Matter | ≤ | 0.20% |
| Viscosity | - | 165mPa.s(200°C) |
| Flash Point | - | 230°C |
| Unsaponifiable Matter Content | ≤ | 1.0% |
| Item Name | Polypale Rosin-145 | |
| Packing | 25kg/bag |
Beyond that, we can supply various types of colophony dedicated for solder products, like solder wire, solder paste, and more.
Related Names
Colophony | Rosin Soldering Flux | Solid Flux
