Heynova (Shanghai) New Material Technology CO., Ltd.
Heynova (Shanghai) New Material Technology CO., Ltd.
3-Chlorophthalic anhydrid 117-21-5 C8H3ClO3

3-Chlorophthalic anhydrid 117-21-5 C8H3ClO3

CAS No.: 117-21-5 

Product name: 3-Chlorophthalic anhydrid 

Appearance: White to light yellow crystalline powder 

Purity(HPLC): ≥99% 

Molecular formula: C8H3ClO3 

Molecular weight: 182.56 

Package: In Aluminum foil bag, cartons outside. 

Storage: Preserve in a well-closed container and keep in cool, dry place, avoid light

3-Chlorophthalic anhydrid 117-21-5 C8H3ClO3

Application of 3-Chlorophthalic anhydrid 117-21-5 C8H3ClO3


  • 3-Chlorophthalic anhydrid is an organic compound appearing as a white crystalline solid. It is soluble in alcohol and ester solvents but poorly soluble in water. 3-Chlorophthalic anhydrid can be obtained by reacting phenol with ferrous chloride.


  • 1. Esterification reaction: It serves as an esterification reagent, reacting with alcohols to produce ester compounds.


  • 2. Oxidation reaction:3-Chlorophthalic anhydrid can be oxidized to the corresponding acid and undergoes quinone formation under reaction conditions.


  • 3. Fungicide: 3-Chlorophthalic anhydrid exhibits fungicidal properties and is utilized in agriculture as a component of plant protection agents and insecticides

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3-Chlorophthalic anhydrid 117-21-5 C8H3ClO3
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