Phthalic anhydride
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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 :148.12
Quality
standards of phthalic anhydride
|
property
|
specification
|
||
|
excellent
|
frist
grade
|
qualified
|
|
| appearance | white scale-shaped or crystal powder | white scale-shapedor crystal powder tinged with other colour | |
| molten colour ¡Ü |
20
|
50
|
100
|
| molten clour after heating ¡Ü |
50
|
150
|
-
|
| solidification point ¡Ý ¡æ |
130.5
|
130.3
|
130.0
|
| purity% ¡Ý |
99.5
|
99.5
|
99.0
|
| free acid content ¡Ü % |
0.5
|
0.5
|
0.5
|
| ash% ¡Ü |
0.05
|
-
|
-
|
Packing and Storage
Packing with round paperboard drum lined with PE bag, net 25kg per drum, also packing on the base of customer's demand. Kept in a light-proof, well-closed, dry and cool place.
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