Maleic Anhydride

available

Maleic Anhydride (MA - Molten & Solid Grade)

“The highly reactive dienophile: the essential C4 intermediate for unsaturated polyesters and lubricant additives.” Arnico’s Maleic Anhydride (MA) is the powerful, versatile intermediate with a highly strained ring and a reactive double bond, making it a cornerstone of polymer and additive chemistry. It is the essential raw material for unsaturated polyester resins that build durable boats and pipes, and the key precursor for PIBSA, a crucial engine oil dispersant. Our high-purity briquettes and stable molten form deliver the consistent reactivity needed for demanding, high-performance chemical syntheses.

Description More

1. Product Introduction & Main Application

Arnico’s Maleic Anhydride is a solid chemical substance supplied in briquette or white powder form, produced from the catalytic oxidation of n-butane or benzene. This chemical intermediate, possessing a reactive double bond and a highly active anhydride ring, is a key raw material for the production of Unsaturated Polyester Resins (UPR), copolymers, lubricating oil additives, and maleic acid.

2. Technical Specifications

Technical Parameter	Molten / Solid Grade	High Purity Grade	Unit
Purity	≥ 99.5	≥ 99.9	%
Freezing Point	52.5 – 52.8	52.7 – 52.9	°C
Color (APHA, 140°C Melt)	≤ 20	≤ 10	Pt-Co
Free Maleic Acid	≤ 0.1	≤ 0.05	%
Ash	≤ 5	≤ 2	ppm
Iron (Fe)	≤ 1	≤ 0.5	ppm

3. Features & Benefits

Exceptional & Multiple Reactivity: The anhydride ring opens with alcohols, and the double bond participates in copolymerization with styrene, creating unmatched versatility in polymer synthesis.
Color Stability & Thermal Purity: The molten grade has minimal iron impurities, preventing discoloration of the final resin.
Chemical Resistance in UPR Resins: Imparts hardness and excellent anti-corrosion properties against water and chemicals.
Lubricant Raw Material: An anti-wear additive and viscosity index improver in engine oil (via the production of PIBSA).

4. Industrial Applications

Resin Production: Unsaturated polyester resins for boats, pipes, and FRP tanks.
Lubricant Industry: The production of polyisobutenyl succinic anhydride (PIBSA) for engine oil additives.
Agriculture & Food: The production of maleic acid, fumaric acid, and malic acid.
Paper Industry: Wet-strength paper resins (sizing agent).

5. Safety & Handling

MSDS (Material Safety Data Sheet): This material’s dust and vapors are severe skin, eye, and lung irritants and cause chemical burns. The Arnico MSDS is mandatory.
Storage Conditions: Store the solid form in moisture-proof bags, and the molten form in heated tanks (60-70°C), away from water, alkalis, and oxidizers. It reacts violently with water.
Personal Protective Equipment (PPE): Acid-resistant clothing, PVC gloves, sealed goggles, and a P2 respirator for dust are required.

6. Quality Assurance & COA

Arnico Maleic Anhydride shipments are accompanied by a Certificate of Analysis (COA) detailing the freezing point and melt color.

Technical documents for the product Maleic Anhydride including the Technical Data Sheet (TDS), Material Safety Data Sheet (MSDS), and Certificate of Analysis (COA), are available to customers upon request.

To receive these documents and further information, please contact our technical or sales department, or reach out to us via email.