4-Chlorophthalic anhydride Chemical Properties

Melting point:

96°C

Boiling point:

290 °C

Density 

1.594±0.06 g/cm3(Predicted)

vapor pressure 

0.058-0.058Pa at 25℃

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

solubility 

soluble in Toluene

form 

Solid:particulate/powder

color 

White to Almost white

InChI

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

InChIKey

BTTRMCQEPDPCPA-UHFFFAOYSA-N

SMILES

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

LogP

2.713

CAS DataBase Reference

118-45-6(CAS DataBase Reference)

Safety Information

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

HS Code 

2932990090

4-Chlorophthalic anhydride Usage And Synthesis

Chemical Properties

4-Chlorophthalic anhydride has a melting point of around 99 °C. Like most acid anhydrides, it can hydrolyze in the presence of water.

Uses

4-chlorophthalic anhydride is an important monomer synthesis of polyimide and polyimide is considered to be the highest tolerance has been industrialized in the polymer and the shape and chemical stability of other materials can not like the outburst strength, wear resistance and extreme temperatures, excellent, has been widely used in aviation, aerospace, microelectronics and atom to the field of high technology. 4- of 4-chlorophthalic anhydride is mainly used in the synthesis of diphenyl ether dianhydride anhydride, two single and two double ether, thioether dianhydride anhydride two, two, and two amine polymerization ring was a series of polyimide engineering plastic with excellent performance. 4- of 4-chlorophthalic anhydride is not only the ideal raw material for the synthesis of various intermediates of polyimide, and can be used as a drug or pesticide.

Synthesis Reference(s)

Tetrahedron Letters, 23, p. 371, 1982 DOI: 10.1016/S0040-4039(00)86833-1

Preparation

A preparation method of 4-chlorophthalic anhydride uses monosodium phthalic acid as a raw material, uses water as a medium, uses a weak alkali solution as a pH regulator of a reaction system, and directly performs chlorination reaction with chlorine gas. The weak alkali solution is used as the pH regulator of the reaction system, which is beneficial to stabilizing the pH value of the reaction system, and can obtain high-yield 4-chlorophthalic acid monosodium coarse salt. The crude salt is desalted, dehydrated and closed to obtain a crude product of 4-chlorophthalic anhydride, which is purified by rectification to obtain high-purity 4-chlorophthalic anhydride.

4-Chlorophthalic anhydride(118-45-6)Related Product Information

• Caronic anhydride
• Methyl tetrahydrophthalic anhydride
• Tetrachlorophthalic anhydride
• 3-Fluorophthalic anhydride
• cis-1,2,3,6-Tetrahydrophthalic anhydride
• CIS-BUTENEDIOIC ANHYDRIDE
• Trifluoromethanesulfonic anhydride
• Succinic anhydride
• O-Phthalimide
• PHTHALAMIDE
• Dibutyl phthalate
• 1-Chloro-2-methylpropane
• Glutaric anhydride
• Phthalonitrile
• 3-Nitrophthalic anhydride
• 1-Chlorobutane
• Methylhexahydrophthalic anhydride
• Tetrachloroterephthalonitrile