Gum rosin is made of natural resin,is redpine rosin.color is pale yellow.without any impurities
1.Soft point 166-170
2.package: 225kg net in galvanized drum
3.Origin: Guangxi China
4.colour: transparent light yellow
GUM ROSIN WW GRADE | GUM ROSIN WW GRADE | |
(ex Pinus Massoniana) | ||
Appearance:transparent | ||
Color(species standard);light yellow | ||
Softening point(R and B,deg C);76.0 min. | ||
USAGE | Paint,ink,rubber,paper,soap, Organic synthesis,etc. | Acid value(mg/g);166 min. |
Unsaponiflable matters:5.0% max. | ||
Insoluble matter in alcohol:0.030% max | ||
NORM | [C19 H29 COOH] | Dirt matters:0.020% max. |
PACKAGE:225kg galvanized drum or 25kg bag. | ||
| Grade and Requirements | |||||||
X | WW | WG | N | M | K | |||
Color | slightly yellow | pale yellow | yellow | deep yellow | yellow brown | yellow red | ||
Correspond to the standard glass color piece of rosin | ||||||||
Appearance | transparent solid | |||||||
Softening Point (ball & ring) | 76 °C min | 75 °C min | 74 °C min | |||||
Acid No. ( mgKOH/g ) | 166 min | 165 min | 164 min | |||||
Unsaponifiable Material | 5% max | |||||||
Alcohol Insoluble Material | 0.03 % max | 0.04 % max | ||||||
Ash ( % ) , max | 0.02 | 0.03 | 0.04 | |||||
Rosin (also known as colophony) is a solid resinous material obtained from the oleoresin (tree sap) of live pine trees (called gum rosin), the stump wood of dead pine trees by solvent extraction (called wood rosin), and in the pulp paper recovery process (called tall oil rosin).
USAGE: The rosin is used directly in the manufacturing of adhesives, inks, rubber compounds, paints & coatings, etc., or modified as resins to give more specific characteristics to the rosin to improve or change their stability, aging, color, tackiness, and so forth to be used in the above-mentioned products.
