3-Chlorophthalic anhydride

3-Chlorophthalic anhydride is a monochlorinated aromatic anhydride. It is an isomer of 4-chlorophthalic anhydride and a derivative of phthalic anhydride.

3-Chlorophthalic anhydride

Names
Preferred IUPAC name 4-Chloro-2-benzofuran-1,3-dione
Identifiers
CAS Number	117-21-5 Y
3D model (JSmol)	Interactive image
ChemSpider	60370 Y
ECHA InfoCard	100.003.800
PubChem CID	67014
UNII	VO7NXT0137 Y
CompTox Dashboard (EPA)	DTXSID10151653
InChI InChI=1S/C8H3ClO3/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3H Y Key: UERPUZBSSSAZJE-UHFFFAOYSA-N Y InChI=1/C8H3ClO3/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3H Key: UERPUZBSSSAZJE-UHFFFAOYAN
SMILES Clc1cccc2c1C(=O)OC2=O
Properties
Chemical formula	C8H3ClO3
Molar mass	182.56 g·mol−1
Melting point	~123 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Properties

3-Chlorophthalic anhydride has a melting point of around 123 °C. It may hydrolize in presence of water.

Applications

3-Chlorophthalic anhydride may be used to produce herbicides and pesticides, intermediates for active pharmaceutical ingredients and can be used as a monomer for the production of polyimides.

See also

• 4-Chlorophthalic anhydride

References

• Preparation of 3-chlorophthalic anhydride http://www.freepatentsonline.com/5683553.html