3-CHLOROPHTHALIC ANHYDRIDE Chemical Properties

Melting point:

123-126 °C

Boiling point:

170°C(lit.)

Density 

1.594±0.06 g/cm3(Predicted)

vapor pressure 

0.02-0.08Pa at 25℃

storage temp. 

Inert atmosphere,Room Temperature

form 

Crystalline Powder and Chunks

color 

White or pale yellow

InChI

InChI=1S/C8H3ClO3/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3H

InChIKey

UERPUZBSSSAZJE-UHFFFAOYSA-N

SMILES

C1(=O)C2=C(C(Cl)=CC=C2)C(=O)O1

LogP

2.713

CAS DataBase Reference

117-21-5(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

37/39-26

HS Code 

29173995

MSDS

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3-CHLOROPHTHALIC ANHYDRIDE Usage And Synthesis

Chemical Properties

White or pale yellow crystalline powder and chunks

Uses

3-chlorophthalic anhydride is mainly used for the synthesis of polyimide engineering plastic properties. Also be used as drug or pesticide intermediates.

Synthesis Reference(s)

[1] Preparation of 3-chlorophthalic anhydride. CA1090814A

Synthesis

react phthalic anhydride with chlorine in the presence of a strong non-volatile Lewis acid at a controlled rate not to exceed 50% conversion of the phthalic anhydride reactant to obtain substantially pure 3-chlorophthalic anhydride at a temperature of about 200°C. to 240°C., and re-covering said substantially pure 3-chlorophthalic anhydride.[1]

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