Maleic anhydride
Maleic anhydride is an important organic chemical raw material and is mainly used to make unsaturated polyester resin, paint, paper treatment agent, medicine, food additive, artificial leather and marble.
molecular formula: C4H2O3
molecular weight: 98.06
Quality standards of maleic anhydride
|
Property
|
specification
|
||
|
excellent
|
first
grade
|
qualified
|
|
| Appearance | white,light yellow piece or sliced crystal | ||
| content(based on maleic anhydride)¡Ý |
99.5
|
99.0
|
98.5
|
| molten colour |
25
|
50
|
100
|
| solidification point¡æ¡Ý |
52.4
|
52.0
|
51.5
|
| ash %¡Ü |
0.005
|
0.005
|
-
|
| Fe content ppm¡Ü |
5
|
-
|
-
|
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