It is a kind of nutural resin,mainly composed of various kinds of resin acids,it can be dissolved easily in many organic solvents,and has special chemical activity.
specification:
|
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),℃ ≥
|
76
|
75
|
74
|
|
Acid number（mgKOH/g） ≥
|
166
|
165
|
164
|
|
Alcohol insoluble substance, %
|
0.03
|
0.03
|
0.04
|
|
Unsaponifiable matter, %
|
5
|
5
|
6
|
|
Ash, (%)
|
0.02
|
0.03
|
0.04
|
|
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