gum rosin ww grade is an important raw material for the manufacture of adhesive, coating, inks, rubber, soaps, paper etc.

Gum rosin has been general used for ink, adhesive, paint, food and rubber industry.

Name of Index	X	WW		WG	N		M	K
Color	Slight yellow	Light yellow		yellow Deep	yellow		Yellow brown	yellow red
Appearance	Transparent
Softening Point (R. & B.)	76°Cmin		75°C min			74°C min
Acid Value mg KOH/g	166 min		165 min			164 min
Unsaponifiable Matter	5%max		5%max			5%max
Insoluble Matter in Alcohol	0.03%max		0.03%max			0.04%max
Ash	0.02%max		0.03%max			0.04%max

2. Properties and uses:

It 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. So 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.

3. Packing:

(1) Drum: Galvanized iron drum, 225kg net each drum.

4. Technical specification:

The above technical specification (GB 8145-87) is the national standard of People's Republic of China. If there are changes, the latest specification will be executed and assured by contract.

gum rosin ww grade