Gum Rosin
Gum Rosin
| Gum Rosin | ||||||||
| Grade | X | WW | WG | N | M | K | ||
| Appearance | Transparent | |||||||
| Color Correspond to the Standard Piece of Rosin | slightly yellow | pale yellow | yellow | deep yellow | yellow brown | yellow red | ||
| Softening Point(R&B),℃ mim | 76 | 75 | 74 | |||||
| Acid Valuea，mg/g min | 166 | 165 | 164 | |||||
| Unsaponifiable Matterb, % max | 5 | 5 | 6 | |||||
| Alcohol Insoluble Substance, % max | 0.03 | 0.03 | 0.04 | |||||
| Ash, % max | 0.02 | 0.03 | 0.04 | |||||
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a.Pinus latteri Mason contains partial di-resin acid, so its acid value is higher. b.Pinus elliottii Engelm. contains more di-terpene neutral substance, so the content of unsaponifiable matter is higher. |
Note：
1.Special properties and uses: It is a kind of natural resin, mainly composed of various kinds of resin acids, it can be dissolved easily in many types of solvents, and has special chemical activity. So it is an important raw material for the manufacture of paper, coatings, inks, rubbers, soaps, electronic industrial products, food grade ester gum,rosin ester resins, etc.
2.Packing: Drum: Net weight 225Kgs each drum.
3.The standards of GB8145-2003 is national standard of People's Republic of China. If there are changes, the latest standard will be executed and assured by contract.