xinchangjiang

15TH FASTENER EXPO SHANGHAI June 17-19, 2025 Booth 2D306

2025-05-28

Phthalic Anhydride

Phthalic Anhydride
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  • Phthalic Anhydride

Phthalic Anhydride

Category: Phthalic Anhydride

Keywords: Phthalic Anhydride

Inqury

Product Name: Phthalic Anhydride (PA)

CAS Number: 85-44-9

Molecular Formula: C8H4O3

  

Specifications:

 

                        Grades  

Items        

Top Grade

First Grade

Appearance

white scaly or crystalline powder  

Fused Chroma (Chroma No.), maximum

20

50

Chroma of Thermal Stability (Chroma No.), 

maximum

50

150

Chroma of Sulphuric Acid (Chroma No.), 

maximum

60

100

Crystallization Point, ℃ minimum

130.5

130.3

Purity, % minimum

99.5

99.5

Free Acid, % maximum

0.20

0.30

Ash, % maximum

0.05

-

 

Usage: As an important organic chemical material, it is mainly used for the production 

of plastic plasticizers, alkyd resins, dyes, unsaturated resins and some medicines and 

pesticides. 

 

Packing: 25 KGS/ woven bags with inner plastic bag or upon customer's demands.

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