1. WW Grade gum rosin 2. Soft point: 76.0 min 3. Usage: it is widely used in ink, paint, adhesives ect. 4. Origin: Guangxi

WW Grade Gum rosin   

 

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.

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. 

ww grade Gum rosin