Phthalic Anhydride (P.A)

Test Test Method Result
Cristalization point ºC ASTM D – 1439 130.9
Color of the molten matrial, APHA (MAX.) ASTM D – 3366 20
Color of the molten matrial after heat treatment, APHA (MAX.) ASTM D – 3366 50
Free acidity as phthal acid, percent by mass (MAX.) IS 5158 A – 4 < = 0.10
Maleic anhydride % W / W GC < = 0.05
Other impurities (as benzoic and phthalide) percent by mass (MAX.) GC < = 0.1
Apearance Visual White Flakes
Phthalic anhydride % W / W GC 99.8
Phthalic Anhydride(P.A)

Phthalic anhydride is a toxic, white flake compound.

Phthalic Anhydride is the anhydride of phthalic acid. This white solid is an important industrial chemical, especially for the large–scale production of plasticizers for plastics. It is presently obtained by catalytic oxidation of Ortho–Xylene.

molecular formula: C6 H4(CO)2O


1)alkyd pesins for paints and varnishes

2)plasticizer resins

3)dye intermediate, pigment

4)manufacture of phthaleins

5)polyester resins

paking:25 KG net PP bags

500 KG net in jumbo bags

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