Home | Daivat LifeSciences

Maleic Anhydride

CAS Number: 108‑31‑6

Synonyms:cis‑Butenedioic anhydride, MAnh

Chemical Formula:C₄H₂O₃

Product Introduction

Maleic anhydride is a white crystalline solid with a sharp, irritating odor. It’s an important industrial reagent used in the production of unsaturated polyester resins, lubricating oil additives, copolymers, and agricultural products.

Get Quote

Physical & Chemical Properties

Property	Value
Appearance	White to yellowish crystalline solid
Molecular Weight	98.06 g/mol
Melting Point	52.8°C
Boiling Point	202°C
Density	~1.48 g/cm³ (liquid at boiling point)
Solubility	Reacts with water (anhydride → acid)
Odor	Pungent, irritating

Applications

Unsaturated Polyester Resins : cross‑linker in fiberglass and composites
Additives: production of lube oil dispersants (e.g., polyisobutenyl succinimides)
Copolymer synthesis: in vinyl polymers and coatings.
Agricultural chemicals: precursor to maleic hydrazide, a plant growth regulator
Chemical synthesis: building block for fumaric acid and other derivatives