离岸价格
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Minimum Order
位置:
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最小订单价格:
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最小订单:
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包装细节:
In galvanized iron drum, 225kgs net each drum
交货时间:
-
供应能力:
-
付款方式:
T/T
联系人 Ms. dong
lirang, Shijiazhuang, Hebei
Gum rosin is made of natural resin, its general formula is C*0H****0.
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.
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Parameter |
Grade |
||
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Standard: GB/T*************3 |
X |
WW |
WG |
|
APPEARANCE |
Transparent |
Transparent |
Transparent |
|
COLOR |
Light Yellow |
Pale Yellow |
Yellow |
|
SOFTENING POINT(R&B)°C |
*6.0 |
*6.0 |
*5.0 |
|
ACID NUMBER(mg KOH / g)≥ |
**6.0 |
**6.0 |
**5.0 |
|
UNSAPONIFIABLE MATTER % ≤ |
5.0 |
5.0 |
5.0 |
|
ETHANOL INSOLUBLES % ≤ |
0.**0 |
0.**0 |
0.**0 |
|
ASH CONTENT % ≤ |
0.**0 |
0.**0 |
0.**0 |
