Maleic anhydride

Maleic anhydride is an organic compound with the chemical formula C
4H
2O
3. It is the acid anhydride of maleic acid. Maleic anhydride is used to make some plastics.

Maleic anhydride
IUPAC name	Furan-2,5-dione
Other names	cis-Butenedioic anhydride
Identifiers
CAS number	check&c=0&v= 108-31-6 check
SMILES	C1=CC(=O)OC1=O
Properties
Molecular formula	C4H2O3
Molar mass	98.04 g mol-1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Chemistry

Maleic acid is a dienophile, a type of chemical used in the Diels-Alder reaction with dienes. The Dies-Alder reaction of maleic anhydride and butadiene or isoprene makes tetrahydrophthalic anhydrides, which can be hydrogenated to hexahydrophthalic anhydrides. These can be used as curing agents in epoxy resin.

Maleic Anhydride Media

• 

  Selected derivatives of maleic anhydride: 2,3-Dimethylmaleic anhydride from dimerization using 2-aminopyridine as catalyst, tetrachlorolactone from treatment with phosphorus pentachloride, product of AlCl3-catalyzed acylation of benzene, and product of ene reaction with propylene.

• 

  Maleic anhydride Diel.Alder reaction with butadiene

• 

  Maleic Anhydride Dimerization