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: ClC1=C2C(C(=O)OC2=O)=CC=C1

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

Ref: 3B-C3489

3-Chlorophthalic anhydride, tech grade

CAS: 117-21-5

Formula: C₈H₃ClO₃

Purity: 95%

Color and Shape: Solid

Molecular weight: 182.5606

Ref: IN-DA000DHR

3-Chlorophthalic acid anhydride

CAS: 117-21-5

Formula: C₈H₃ClO₃

Color and Shape: Neat

Molecular weight: 182.561

Ref: 04-C11494000

3-Chlorophthalic Anhydride

CAS: 117-21-5

Formula: C₈H₃ClO₃

Molecular weight: 182.56

Ref: 4Z-P-151013

3-Chlorophthalic anhydride

CAS: 117-21-5

3-Chlorophthalic anhydride

Formula: C₈H₃ClO₃

Purity: 80%

Color and Shape: white solid

Molecular weight: 182.56g/mol

Ref: 54-OR54359

3-Chlorophthalic acid anhydride

CAS: 117-21-5

Formula: C₈H₃ClO₃

Purity: 95%

Color and Shape: Powder

Molecular weight: 182.56

Ref: 10-F013484

3-Chlorophthalic Anhydride

Controlled Product

CAS: 117-21-5

Applications 3-Chlorophthalic anhydride

Formula: C₈H₃ClO₃

Color and Shape: Neat

Molecular weight: 182.561

Ref: TR-C380578