Special Grade Rosin
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Product Description
Product Details
Masson resin rosin (HS CODE: 3806 1000 CAS NO.: 8050-09-7)
| Index name | Premium X | First grade WW | Second grade WG | Third grade N | Fourth grade M | Fifth grade K |
| Color | slightly yellow | light yellow | yellow | dark yellow | Yellow brown | yellow red |
| Appearance | transparent | |||||
| Softening point t(R.&B.) | 76℃min | 75℃min | 74℃min | |||
| Acid value mg KOH/g | 166min | 165min | 164min | |||
| Unsaponifiable matter content | 5%max | 5%max | 5%max | |||
| Ethanol insoluble matter content | 0.03%max | 0.03%max | 0.04%max | |||
| Ash content | 0.02%max | 0.03%max | 0.04%max | |||
Slash pine rosin
| Slash pine rosin | Color | Appearance | Softening point(R.&B.) | Acid value mg KOH/g | Unsaponifiable matter content | Ethanol insoluble matter content | Ash content |
| light yellow | transparent | 76℃min | 166min | 5%max | 0.03%max | 0.03%max |
Scope of use:
Rosin is a natural organic substance, mainly composed of various resin acids, easily soluble in a variety of organic solvents, and has unique chemical activity. Therefore, it is an important raw material for soap, papermaking, paint, rubber, resin, electrical appliances, organic synthesis and other industries.
General physical properties of rosin:
Appearance: yellow brittle solid.
Color: light yellow to red.
Solubility: insoluble in water, but soluble in organic solvents.
Softening point: 72-80℃.
Relative density: 1.070-1.085.
Average heat Capacity (20-245℃): Average heat capacity (20-245℃).
Melted rosin expansion coefficient: 0.00055.
Heat of fusion: 15.8kcal/kg.
Calorific value: 9074-9171kcal/kg.
Boiling point: 250℃/5 mmHg.
Thermal conductivity: 0.11 kcal/(mh℃).
Atomized dust ignition point: 130℃.
Flash point: 216℃
Lower explosion limit: 12.6g/m3.
Main chemical composition of Chinese masson pine and slash pine rosin (%)
| Name | Pimaric acid | Elliotinoic acid | Sandaracopimaric acid | Isopimaric acid | Palustric acid | Dehydroabietic acid | Abietic acid | Neoabitic acid |
| Masson rosin | 7.9 | 1.6 | 0.4 | 25.0 | 4.3 | 44.5 | 13.6 | |
| Slash pine rosin | 3.0 | 3.6 | 2.1 | 14.6 | 20.8 | 5.0 | 31.2 | 17.3 |
Application
Most rosin is directly used in the production of paper, paint, soap and ink. Because rosin has shortcomings such as easy oxidation and low softening point, the paint industry often uses the carboxyl reaction of resin acids to make resin. Acid esters and resinates are reused; while the synthetic rubber and ink industries use the double bond reaction of resin acids to produce disproportionated rosin, Polymerized rosin , Hydrogenated rosin , etc. for reuse.
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