Sell gum rosin

Description

Specification	Standard	Typical Data
Appearance	Transparent	Transparent
Color (Gardner)	≤8.0	8.0
Softening Point (R.&.B°C)	≥*6.0	*7.0
Acid Value (mgKOH/g)	≥**6.0	**0.0
Ash content (PCT)	≤0.**0	0.**0
Non saponification content (PCT)	≤5.0	4.5
Undissolvable object in alcohol (PCT)	≤0.**0	0.*1

Gum rosin also called colophony, is a solid form of resin obtained from pines and some other plants, mostly conifers, produced by heating fresh liquid resin to vaporize the volatile liquid terpene components. It is semi-transparent and varies in color from yellow to black. At room temperature rosin is brittle, but it melts at stove-top temperatures. It chiefly consists of different resin acids, especially abietic acid.