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Gum resin also named Colophony, it is a kind of natural resin, that composed of various kinds resin acids, and having special physical and chemical properties.
it is an important raw material for the production of paper, coatings, inks, rubber, soaps, electronic industrial products, food grade ester gum, rosin ester resins etc.
Specification:
| Grade | X | WW | WG | N | M | K |
| Appearance | Transparent Solid | |||||
| Color | slightly yellow | pale yellow | yellow | deep yellow | yellow brown | yellow red |
| Correspond to the Standard Glass Color Piece of Rosin | ||||||
|
Softening Point (R&B),°C, min |
76 | 75 | 74 | |||
|
Acid Value, (mgKOH/g), min |
166 | 165 | 164 | |||
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Alcohol insoluble Substance ,(%) , max |
0.03 | 0.03 | 0.04 | |||
|
Unsaponifiable matter, (%) ,max |
5 | 5 | 6 | |||
| Ash, (%) ,max | 0.02 | 0.03 | 0.04 | |||
Copyright Hengshui Zehao Chemicals Co., Ltd. Tel: +86 318-8015158
Address: Rubber industry district, Hengshui City, Hebei Province, China
Mobile: +86 18330856252 Technical support: JiaCheng