CAS 118-45-6

4-Chlorophthalic anhydride

Description:

4-Chlorophthalic anhydride is an organic compound characterized by its anhydride functional group and a chlorinated aromatic structure. It is a white to light yellow crystalline solid at room temperature, exhibiting a melting point that typically falls within a moderate range. This compound is known for its reactivity, particularly in electrophilic aromatic substitution reactions due to the presence of the electron-withdrawing chlorine atom, which enhances its electrophilic character. 4-Chlorophthalic anhydride is primarily used in the synthesis of various chemical intermediates, including dyes, pigments, and pharmaceuticals. It also serves as a key building block in the production of polyesters and other polymers. The compound is soluble in organic solvents such as acetone and chloroform but is generally insoluble in water. Safety precautions are essential when handling this substance, as it can be irritating to the skin, eyes, and respiratory system. Proper storage in a cool, dry place away from incompatible materials is recommended to maintain its stability and prevent degradation.

Formula: C₈H₃ClO₃

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

InChI key: InChIKey=BTTRMCQEPDPCPA-UHFFFAOYSA-N

SMILES: O=C1C=2C(C(=O)O1)=CC=C(Cl)C2

Synonyms:

• 1,3-Isobenzofurandione, 5-chloro-
• 4-Chlorophthalic acid anhydride
• 5-Chloro-1,3-isobenzofurandione
• 5-Chloro-2-Benzofuran-1,3-Dione
• 5-Chloroisobenzofuran-1,3-dione
• Chlorophtalicanhydre
• Phthalic anhydride, 4-chloro-
• p-Chlorophthalic anhydride
• 4-Chlorophthalic anhydride

4-Chlorophthalic Anhydride

CAS: 118-45-6

Formula: C₈H₃ClO₃

Purity: >98.0%(GC)(T)

Color and Shape: White to Almost white powder to lump

Molecular weight: 182.56

Ref: 3B-C1328

5-Chloroisobenzofuran-1,3-dione

CAS: 118-45-6

Formula: C₈H₃ClO₃

Purity: 97%

Color and Shape: Solid

Molecular weight: 182.5606

Ref: IN-DA0076CT

4-Chlorophthalic anhydride

CAS: 118-45-6

4-Chlorophthalic anhydride

Purity: 98%

Molecular weight: 182.56g/mol

Ref: 54-OR322098

4-Chlorophthalic Anhydride

CAS: 118-45-6

Formula: C₈H₃ClO₃

Molecular weight: 182.56

Ref: 4Z-P-151014

4-Chlorophthalic anhydride

CAS: 118-45-6

Formula: C₈H₃ClO₃

Purity: 97%

Color and Shape: Solid, White solid

Molecular weight: 182.56

Ref: 10-F121400

4-Chlorophthalic anhydride

CAS: 118-45-6

4-Chlorophthalic anhydride is a colorless crystalline solid that is soluble in acetone and ethanol. It is used to synthesize dyes, paints, varnishes, and other organic compounds. This compound can be produced by the reaction of copper chloride with chloral hydrate or by the dehydration of phthalic anhydride with concentrated sulfuric acid. 4-Chlorophthalic anhydride reacts with hydrogen chloride to form 4-chlorophthalic acid. The solubility of this compound in water varies depending on the temperature and pH levels. The solubilities of 4-chlorophthalic anhydride are determined using experimental solubility data and calculated using thermodynamic values and vibrational frequencies. Phase equilibrium studies show that at low temperatures, 4-chlorophthalic anhydride is more soluble in water than at higher temperatures due to its lower energy state.

Formula: C₈H₃ClO₃

Purity: Min. 95%

Molecular weight: 182.56 g/mol

Ref: 3D-AAA11845