Diethyl Maleate

Synonyms: Ethyl maleate; Maleic acid diethyl ester, (Z)-2-butenedioic acid diethyl ester, DEM
Transport Information
Hazard Class
UN Number
Packing Group
non-regulated
CAS Number
141-05-9
Import Duty
2917.19.70.20

Used in many organic syntheses as a dienophile for diene synthesis. It is used as an additive and intermediate for plastics, pigments, pharmaceuticals, and agricultural products. It is also an intermediate for the production of paints, adhesives, and copolymers.  Dimethyl maleate has also found use in applications where improvements in the hardness and toughness of polymer films are desired. This includes, in particular, the improvement of anti-blocking properties of copolymers of vinyl acetate with DMM. It is also used as an internal modifier to increase the glass transition temperature of styrene or vinyl chloride polymers.