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Home > Products > Alaki Products > High Quality CAS: 85-44-9 Phthalic Anhydride 99.5%

High Quality CAS: 85-44-9 Phthalic Anhydride 99.5%

Basic Info

Model No.:  Phthalic anhydride

Product Description

Model NO.: Phthalic anhydride Appearance: Powder Colour: White Thermostable Chroma: 50 Specification: ISO Type: Pharmaceutical Intermediates Quality: Industrial Molten Chroma: 20 Trademark: Qingxin Origin: Shandong China                                              High quality Cas:85-44-9 Phthalic anhydride 99.5%
Phthalic anhydride is the organic compound with the formula C8H4O3. This anhydride of phthalic acid, a colourless solid, is an important industrial chemical, especially for the largescale production of plasticizers for plastics.
Specification:

Item

Index

Top grade

First grade

Qualified product

Appearance

white scaly 
or crystalline powder

white scaly or crystalline
 powder with slight colors

molten Chroma(Chroma no. )

20

50

100

thermostable Chroma(Chroma no. )

50

150

-

Chroma of vitriol(Chroma no. )

60

100

150

crystallization point(°C)

130.5

130.3

130.0

Purity(mass fraction)%

99.80

99.50

99.00

Free acid(mass fraction) %

0.20

0.30

0.50

Ash(mass fraction)%

0.05

-

-

Applications of phthalic anhydride
Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. 
It undergoes hydrolysis and alcoholysis.
Hydrolysis by hot water forms orthophthalic acid. 
This process is reversible: Phthalic anhydride reforms upon heating the acid above 180°C.

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