Gum Rosin
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Gum rosin is a natural resin, and it mainly composed with resin acids, its could dissolve in many organic solvents.
| GUM ROSIN | ||||||||||||||
| Spec. | X | WW | WG | N | ||||||||||
| Apperance | Correspond to the Standard Glass Color Piece of Rosin | |||||||||||||
| Color | slightly yellow | pale yellow | yellow | deep yellow | ||||||||||
| Softening Point(R&B), | min | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | |
| Acid Value,mgKOH/g | min | 166 | 166 | 166 | 166 | 166 | 166 | 165 | 165 | 165 | 165 | 165 | 165 | |
| Alcohol insoluble Substance,% | max | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |
| Unsaponifiable matter,% | max | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | |
| Ash, % | max | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |
