CAS 117-21-5: 3-Chlorophthalic anhydride

Description: 3-Chlorophthalic anhydride, with the CAS number 117-21-5, is a chemical compound characterized by its anhydride functional group derived from phthalic acid. It appears as a white to light yellow crystalline solid and is known for its reactivity, particularly in electrophilic aromatic substitution reactions due to the presence of the chlorine atom on the aromatic ring. This compound is primarily used in the synthesis of various chemical intermediates, including dyes, pigments, and resins. It exhibits moderate solubility in organic solvents such as acetone and chloroform, but is generally insoluble in water. 3-Chlorophthalic anhydride can undergo hydrolysis to form 3-chlorophthalic acid in the presence of water. Safety precautions are necessary 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 essential to maintain its stability and prevent degradation.

Formula: C₈H₃ClO₃

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

InChI key: InChIKey=UERPUZBSSSAZJE-UHFFFAOYSA-N

SMILES: O=C1OC(=O)C=2C(Cl)=CC=CC12

Synonyms:

• 1,3-Isobenzofurandione, 4-chloro-
• 3-Chlorophthalic acid anhydride
• 4-Chloro-1,3-isobenzofurandione
• 4-Chloro-2-Benzofuran-1,3-Dione
• 4-Chloroisobenzofuran-1,3-dione
• Chlorphthalidone
• NSC 122937
• Phthalic anhydride, 3-chloro-
• 3-Chlorophthalic anhydride

3-Chlorophthalic Anhydride

CAS: 117-21-5

• Formula: C₈H₃ClO₃
• Purity: >98.0%(GC)
• Color and Shape: White to Almost white powder to crystal
• Molecular weight: 182.56

3-Chlorophthalic anhydride, 95+%

CAS: 117-21-5

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Purity: 95+%
• Color and Shape: White to light yellow, Crystalline powder or flakes and/or chunks

1,3-Isobenzofurandione, 4-chloro-

CAS: 117-21-5

• Formula: C₈H₃ClO₃
• Purity: 95%
• Color and Shape: Solid
• Molecular weight: 182.5606

3-Chlorophthalic acid anhydride

CAS: 117-21-5

• Formula: C₈H₃ClO₃
• Color and Shape: Neat
• Molecular weight: 182.561

3-Chlorophthalic acid anhydride

CAS: 117-21-5

• Purity: 95.0%
• Color and Shape: Solid, Powder
• Molecular weight: 182.55999755859375

3-Chlorophthalic Anhydride

CAS: 117-21-5

• Formula: C₈H₃ClO₃
• Molecular weight: 182.56

3-Chlorophthalic anhydride

CAS: 117-21-5

• Formula: C₈H₃ClO₃
• Purity: 95%
• Color and Shape: white solid
• Molecular weight: 182.56g/mol

3-Chlorophthalic Anhydride

CAS: 117-21-5

Applications 3-Chlorophthalic anhydride

• Formula: C₈H₃ClO₃
• Color and Shape: Neat
• Molecular weight: 182.561

4-Chloroisobenzofuran-1,3-dione

CAS: 117-21-5

4-Chloroisobenzofuran-1,3-dione is a low energy aromatic hydrocarbon that has the potential to react with hydrogen …

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