CAS No.: 8050-09-7
EINECS No.: 232-475-7
MF: C20H30O2
EINECS No.: 232-475-7
MF: C20H30O2
Parameter
|
Grade
|
||
Standard: GB/T8145-8146-2003
|
X
|
WW
|
WG
|
APPEARANCE
|
Transparent
|
Transparent
|
Transparent
|
COLOR
|
Light Yellow
|
Pale Yellow
|
Yellow
|
SOFTENING POINT(R&B)°C
|
76.0
|
76.0
|
75.0
|
ACID NUMBER(mg KOH / g)≥
|
166.0
|
166.0
|
165.0
|
UNSAPONIFIABLE MATTER % ≤
|
5.0
|
5.0
|
5.0
|
ETHANOL INSOLUBLES % ≤
|
0.030
|
0.030
|
0.030
|
ASH CONTENT % ≤
|
0.020
|
0.020
|
0.030
|
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.
Gum rosin is an important raw material for the manufacture of adhesive, coating, inks, rubber, soaps, paper etc.