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=C1OC(=O)C2=CC(Cl)=CC=C12

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

5-Chloroisobenzofuran-1,3-dione

CAS: 118-45-6

• Formula: C₈H₃ClO₃
• Purity: 97%
• Color and Shape: Solid
• Molecular weight: 182.5606

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

4-Chlorophthalic anhydride

CAS: 118-45-6

• Purity: 97.0%
• Color and Shape: Solid, White solid
• Molecular weight: 182.55999755859375

4-Chlorophthalic Anhydride

CAS: 118-45-6

• Formula: C₈H₃ClO₃
• Molecular weight: 182.56

4-Chlorophthalic anhydride

CAS: 118-45-6

• Purity: 98+%
• Molecular weight: 182.56g/mol

4-Chlorophthalic anhydride

CAS: 118-45-6

4-Chlorophthalic anhydride is a colorless crystalline solid that is soluble in acetone and ethanol. It …

• Formula: C₈H₃ClO₃
• Purity: Min. 95%
• Molecular weight: 182.56 g/mol