Phthalic anhydride
Maleic anhydride
2-ethylhexyl
Fumaric acid

Maleic anhydrideMaleic 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 GB3676-92
Property
specification
excellent
first grade
qualified
Appearance
white,light yellow piece or sliced crystal
content(based on maleic anhydride)≥
99.5
99.0
98.5
molten colour ≤
25
50
100
solidification point≥ °C
52.4
52.0
51.5
ash % ≤
0.005
0.005
-
Fe content ppm ≤
5
-
-
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