Natural Gum Rosin WW Grade, Pine resin
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- Supplier: C&M INTERNATIONAL LLC
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Product Overview
Description
gum rosin ww grade
100% natural resin
two plantations of ourselves
gum rosin ww grade
Description:
Gum Rosin, also called colophony or Greek pitch, 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 terpenecomponents. 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.
Gum Rosin is distilled from natural resin raw material. Its chemical composition is C19H29COOH , the isomers of resin acid. It is widely used in paints, paper, soap, rubber, food, chemical and pharmaceutical industries with unique significant characteristic.
Specification:
| Index | Premium grade | grade 1 | grade 2 | grade 3 | grade 4 |
| Color / Appearance | yellowish | light Yellow | yellow | dark yellow | pale brown |
| Softening point °C | ≥76 | ≥75 | ≥74 | ||
| Acid value(mgKOH/g) | ≤166 | ≤165 | ≤164 | ||
| Unsaponifiable matter content% | ≤5 | ≤5 | ≤6 | ||
| Alcohol insoluble Substance ,(%) | ≤0.03 | ≤0.03 | ≤0.04 | ||
| Ash % | ≤0.02 | ≤0.03 | ≤0.0 | ||
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