离岸价格
获取最新报价|
Minimum Order
位置:
china
最小订单价格:
-
最小订单:
-
包装细节:
25kg/bag
交货时间:
10days
供应能力:
-
付款方式:
Western Union, L/C, T/T
联系人 Ms. Bella
gongnong road, Shijiazhuang, Hebei
Phthalic anhydride is an important organic chemical raw material
which is mainly used to make plasticizer in plastic, alkyd resin,
dye, unsaturated resin and some medicines or farm chemicals.
molecular formula :C8H4O3
molecular weight :**8.*2
Quality standards of phthalic anhydride GB/T *********6
|
Item |
Index |
||
|
Top grade |
First grade |
Qualified product |
|
|
Appearance |
white scaly or crystalline powder |
white scaly or crystalline powder with slight colors |
|
|
molten Chroma(Chroma no. )≤ |
*0 |
*0 |
**0 |
|
thermostable Chroma(Chroma no. )≤ |
*0 |
**0 |
- |
|
Chroma of vitriol(Chroma no. )≤ |
*0 |
**0 |
**0 |
|
crystallization point°C≥ |
**0.5 |
**0.3 |
**0.0 |
|
Purity(mass fraction)%≥ |
*9.*0 |
*9.*0 |
*9.*0 |
|
Free acid(mass fraction)≤ % |
0.*0 |
0.*0 |
0.*0 |
|
Ash(mass fraction)%≤ |
0.*5 |
- |
- |
