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Gum Rosin
Synonyms: Colophony, Rosin
Gum rosin also called colophony, is a solid form of resin obtained from pines and some other plants, mostly conifers, produced by heating fresh liquid resin to vaporize the volatile liquid terpene components. It is semi-transparent and varies in color from yellow to black. At room temperature rosin is brittle, but it melts at stove-top temperatures. It chiefly consists of different resin acids, especially abietic acid.
Application:
Chemical material for Paper Production, Soap, Ink, Paints, Adhesives, Ruber, Synthetic Resin, Electric Insulation material, and Organic Synthesis
Packing: 25 kgs in kraft paper bags or 225 kgs in drums, 20/18MT/20'container
| Parameter | Grade | ||
| Standard: GB/T8145-8146-2003 | X | WW | WG |
| APPEARANCE | Transparent | Transparent | Transparent |
| COLOR | Light Yellow | Pale Yellow | Yellow |
| SOFTENING POINT(R&B)°C | 76.0 | 76.0 | 75.0 |
| ACID NUMBER(mg KOH / g)≥ | 166.0 | 166.0 | 165.0 |
| UNSAPonIFIABLE MATTER % ≤ | 5.0 | 5.0 | 5.0 |
| ETHANOL INSOLUBLES % ≤ | 0.030 | 0.030 | 0.030 |
| ASH ConTENT % ≤ | 0.020 | 0.020 | 0.030 |
