Gum Rosin

gum rosin China original gum rosin WW grade

Gum Rosin

 · Properties and uses

Gum rosin is a kind of natural resin, a mixture with various organic acids, and with special chemical activity, and important chemicals for paper-making, soap, paint, ink, adhesive, rubber, food, synthetic resin, electric insulating material and building industries.

 · Specifications (National Std UDC GB/T8145-2003)

Item	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

 · Packing and storage

The product is packed in galvanized iron drum, net weight 225kgs/drum. The product must be kept in dark and cool place, away from water and fire.

Gum Rosin