Maleic Anhydride (MA)

Gandi Chemical Solutions supplies Maleic Anhydride (MA) (CAS 108-31-6) to manufacturers, water treatment plants and industrial processors. Enquiries for Maleic Anhydride are quoted against this listing. Priced by quotation, with a current safety data sheet on every consignment.

Maleic anhydride is a versatile building block used to produce unsaturated polyester resins (fiberglass composites), maleic rosin esters, agricultural chemicals, and food-additive intermediates like fumaric acid. It’s corrosive and a strong irritant to eyes, skin, and respiratory tract, so full PPE and good ventilation are required, particularly with molten or dust forms.

Where maleic anhydride is used

• Unsaturated polyester resin manufacture
• Maleic anhydride grafted polyolefin compatibilisers
• Lubricant and fuel additive synthesis
• Agricultural chemical and surfactant intermediates
• Copolymer manufacture, including styrene-maleic anhydride resins

Key features

• CAS 108-31-6, C4H2O3.
• Also ordered as Maleic Anhydride, Toxilic anhydride, Maleic acid anhydride.
• Supplied in briquette, flake and molten form.

Specification and grade

Maleic anhydride, CAS 108-31-6, formula C₄H₂O₃, supplied as white briquettes, flake or molten. It melts at about 53°C — low enough that briquettes soften in a warm store — and reacts readily with water to form maleic acid, which is the degradation route that matters commercially.

Handling and storage

Causes severe skin burns and eye damage and is a respiratory sensitiser capable of causing occupational asthma. It reacts with water exothermically, and contact with alkali, amines or alkali metals can cause violent decomposition. Keep it absolutely dry, store below 30°C in a dry, ventilated area away from water, bases and oxidisers, and vent storage vessels — hydrolysis generates pressure.

Packaging and supply

Supplied in briquette, flake and molten form. Molten delivery needs heated, dry storage held around 60–70°C under nitrogen; confirm that arrangement before a first bulk order, because water ingress into a molten tank is a serious event rather than a quality issue.

References and related supply

• More from this range: Other Chemicals
• Related products: Styrene Monomer (SM), Triethylenetetramine (TETA), Ethylene Glycol Monovinyl Ether (2-Vinyloxyethanol) 97%
• Independent chemical record: PubChem entry for CAS 108-31-6