Phthalic anyhride

Phthalic anhydride

Phthalic anhydride, grade A is manufactured from othox-xylene by air catalytic oxidation in gas phrase with vanadium-titanium catalyst.

Application: Used in the manufucture of Alkyd resins (varnishes, enamels), plasticizers(DOP, DBP etc.) hardener for resins, polyester resins, tyres and technical rubber products, synthesis of phenolphtalein and other phthaleins, many other dyes, chlorinated products, pharmaceutical intermediates, insecticides, diethyl phthalate, dimethyl phthalate, laboratory reagent

Categories ,

Product description

Appearance: White flakes and powder or melt Yellowish or pinkish hue admitted

Physico-chemical properties

Mass fraction of phthalic anhydride, %, no less 99.9
Temperature of crystallization, oC, no less 130.9
Mass fraction of iron, %, no more 0.5
Content of phthalic acid Absent
Mass fraction f maleic anhydride, %, no more 0.05
Mass fraction of ash, %, no more 0.002
Chromaticity of molten product, hasen units, no more:
In output during guarantee period for powder 15
Flakes 20
During guarantee period for melt Not noramlized
Chromaticity of molten product after heating 250oC for 90 min, hasen units, no more
In output during guarantee period for powder 40
Flakes 60
During guarantee period for melt Not noramlized

Product information

GOST: 7119-77
CAS No.: 85-44-9
Grade: A
Quality.: Superior


Packaging: 25 kg palletized Polythyelene bags.
big-bags of mass net 500 kg.


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