4-Chlorophthalic anhydride

4-Chlorophthalic anhydride
Names
	Preferred IUPAC name 5-Chloro-2-benzofuran-1,3-dione
Identifiers
CAS Number	118-45-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	60395 ;
ECHA InfoCard	100.003.866
PubChem CID	67044;
UNII	BPI93D0O61 ;
CompTox Dashboard (EPA)	DTXSID30151993 ;
	InChI InChI=1S/C8H3ClO3/c9-4-1-2-5-6(3-4)8(11)12-7(5)10/h1-3H Key: BTTRMCQEPDPCPA-UHFFFAOYSA-N ; InChI=1/C8H3ClO3/c9-4-1-2-5-6(3-4)8(11)12-7(5)10/h1-3H Key: BTTRMCQEPDPCPA-UHFFFAOYAB;
	SMILES Clc1ccc2C(=O)OC(=O)c2c1;
Properties
Chemical formula	C8H3ClO3
Molar mass	182.56 g·mol−1
Melting point	~99 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

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

Properties[edit]

It has a melting point of around 99 °C. Like most acid anhydrides, it can hydrolyze in the presence of water.

Production[edit]

It can be produced by chlorination of phthalic anhydride.

Applications[edit]

It 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.

References[edit]

Chlorination of phthalic anhydride http://www.freepatentsonline.com/4297283.html