It 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:
Item Specification
Excellent First-grade Qualified
molten colour¡Ü 20 50 100
molten clour 50 150
after heating ¡Ü
purity% ¡Ý 99.5 99.5 99.0
The product includes three grades: excellent, first grade, qualified.
Appearance: for excellent and first grade, it is clear liquid, without suspending impurities.
for qualified product, it is white scale-shaped or crystal powder tinged with other color.
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