Gum Rosin|Gondorukem

Cv.Anugrah Abadi is one of a leading supplier of high quality forest chemical products made from the natural resin of pine trees. Gum Rosin (Gondorukem) is derived from tapping of living pine trees (Pinus Merkusii), a solid form of resin obtained from the distillation of pines resin yields 69% of Gum Rosin and 23% og gum terpentin, and rest of 8% is residue. Gum Rosin is brittle, semi-transparent in yellow color and glossy solid. It is insoluble in water and but soluble in many organic solvents. Gum Rosin also known as Gondorukem (Indonesia), pine rosin, rosin, colophony, siongka.

Us Of Gum Rosin (Gondorukem) :
Gum Rosin is divided into several grades such as X (Slight yellow), WW (Light yellow), WG (Yellow), N (Dark Yellow). At present, Most rosin product used in the resin industry printing inks, light varnishes, adhesives/glues, paper sizing, soda, soldering fluxes, sealing wax, rubber industry, and vernished, also usually used for the manufacturing og paper and soap industry, etc.
while in the producing of synthetic rubber and printing ink, resin acid is changed into disproportionate rosin, polymerized rosin, hydrogenated rosin, etc for further use by its double bond reaction.

rosingum@yahoo.co.id

Specification (Standard Sni 01-5009.12-2001)

* Softening Point Ring And Ball

X = ≥ 78° C

WW = ≥ 78° C

WG = ≥ 76° C

N = ≥ 74° C

*Colour By Lovibond Comparator

X/WW/WG/N

*Impurity/Solubility In Toluen

X = ≤ 0.02 %

WW = ≤ 0.05 %

WG = ≤ 0.07 %

N = ≤ 0.10 %

*Acid Value

160 - 190

*Saponification Value

170 - 220

*Iodine Value 

5 - 25

*ASH Content

X = ≤ 0.01 %

WW = ≤ 0.04 %

WG = ≤ 0.05 %

N = ≤ 0.08 %

*Volatile Oil Content

X = ≤ 2 %

WW = ≤ 2 %

WG = ≤ 2.5 %

N = ≤ 3 %

rosingum@yahoo.co.id