Maleic anhydride

Maleic anhydride

Names
IUPAC name Furan-2,5-dione
Other names cis-Butenedioic anhydride
Identifiers
CAS Number	108-31-6 check
3D model (JSmol)	Interactive image
ECHA InfoCard	100.003.247
CompTox Dashboard (EPA)	DTXSID7024166
SMILES C1=CC(=O)OC1=O
Properties
Chemical formula	C4H2O3
Molar mass	98.06 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Maleic anhydride is an organic compound with the chemical formula C₄H₂O₃. It is the acid anhydride of maleic acid. Maleic anhydride is used to make some plastics.

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.