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4-Chlorophthalic anhydride

4-Chlorophthalic anhydride structure

CAS No:
118-45-6
Formula:
C8H3ClO3
Chemical Name:
4-Chlorophthalic anhydride
Synonyms:
1,3-Isobenzofurandione,5-chloro-;Phthalic anhydride,4-chloro-;5-Chloro-1,3-isobenzofurandione;4-Chlorophthalic anhydride;p-Chlorophthalic anhydride;4-Chlorophthalic acid anhydride;5-Chloro-2-benzofuran-1,3-dione;5-Chloroisobenzofuran-1,3-dione
Categories:
Pharmaceutical Intermediates > Bulk Drug Intermediates

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4-Chlorophthalic anhydride Basic Attributes

Molecular Weight：

182.56

Exact Mass：

182.56

EC Number：

204-251-9

UNII：

BPI93D0O61

DSSTox ID：

DTXSID30151993

HScode：

2932999099

Characteristics

PSA：

43.4

XLogP3：

1.9

Appearance：

white crystal powder

Density：

1.594±0.06 g/cm3(Predicted)

Melting Point：

98 °C @ Solvent: Benzene, Ligroine

Boiling Point：

286-290 °C

Flash Point：

142.4ºC

Refractive Index：

1.626

Vapor Pressure：

0.00116mmHg at 25°C

Safety Information

hazard class code：

R36/37/38

safety instructions：

26-36/37/39

Precautionary statement(s)：

P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501

Hazard Statements：

H315

GHS Classification：

|Danger|H315 (57.14%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 7 companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

4-Chlorophthalic anhydride Use and Manufacturing

Methods of Manufacturing

237.3 g (1.3 mol) of chlorophthalic anhydride obtained in the step (1) and 100 g (0.5 mol)4, 4`-diaminodiphenyl ether was put into 2000gIn ethylene glycol carbonate, Stir and evenly disperse and mixHeat the reaction system to 190 C, Pumping to a negative pressure of -0.05MPa, The reaction was continuously stirred for 10 hours, and then suction filtration was performed.The filtrate is recycled and recycled.The filter cake is bis (substituted phthalimide) crude 308.8g, The crude product yield was 96.7%.Put the crude product into boiling water and stir it.After boiling, Removal of impurities on the surface of the product and inside the particles, After suction filtration, 291.8 g of a bis(chlorophthalimide) product having an aromatic ether structure was obtained.Product yield is 91.4%;By high performance liquid chromatography, The purity is 99.5%.

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 ethe

Computed Properties

Molecular Weight:182.56
XLogP3:1.9
Hydrogen Bond Acceptor Count:3
Exact Mass:181.9770716
Monoisotopic Mass:181.9770716
Topological Polar Surface Area:43.4
Heavy Atom Count:12
Complexity:239
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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4-Chlorophthalic anhydride

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4-chlorophthalic anhydride

CAS No.: 118-45-6

Grade: Pharmaceutical Grade

Content: 98%

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Guide of 4-Chlorophthalic anhydride

Basic Attributes
Characteristics
Safety Information
Use and Manufacturing
Computed Properties
Recommended Suppliers
Latest News
Learn More Other Chemicals

4-Chlorophthalic anhydride

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