Product Details

Product Description

gum rosin ww grade/ gum resin/natural gum rosin ww grade

Specifications

gum rosin is important raw materials for the manufactire of Soap, Paper, Paint, Rubber, Resin, Electric and Synthetic Orgainc.

Grade	X	WW	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	76		75		74
Acid Value, (mgKOH/g), min	166		165		164
Alcohol insoluble Substance ,(%) , max	0.03		0.03		0.04
Unsaponifiable matter, (%) ,max	5		5		6
Ash, (%) ,max	0.02		0.03		0.04

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.

(2) Bag: Intertexture or kraft paper bag, 25kg net each bag.

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.

Specifications
Color: Slight yellow
Solid resinous
Usage: Adhesives, Rubber Compounds,Ink, Painting

		Specifications
Gum rosin grade	color	slftenning point	Acid No.	Unsaponifiable matter	Alcohol insuluble material	Ash(%)max
X	slightly yellow	76degree	166min.	5%max	0.03%max	0.02
WW	pale yellow	76degree	166min.	5%max	0.03%max	0.02
WG	yellow	75degree	165min.	5%max	0.03%max	0.03
N	deep yellow	75degree	165min.	5%max	0.03%max	0.03
M	yellow brown	74degree	164min.	6%max.	0.04%max	0.04
K	yellow red	74degree	164min.	6%max.	0.04%max	0.04