gum rosin

1.Specification

Grade  :X  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 :*6 *6 *5 *5 *4 *4

Acid Value(mgKOH/g),min :**6 **6 **5 **5 **4 **4

Alcohol Insoluble
Substance,(%),max:  0.*3 0.*3 0.*4

Unsaponifiable Matter,(%),max :5 5 6

Ash,(%),max:0.*2 0.*3 0.*4

2.Properties
Gum rosin is a kind of natural resin, mainly composed of various kinds of resin acids, it can be dissolved easily in many organic solvents, and has special chemical activity

3.Use
Gum rosin 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.

4.Packing
Drum:Galvanized iron drum,**5kg net each drum

5.Technical specification
The above technical specification (GB ********3) is the national standard of People’s Republic of China