Description

Maleic Anhydride is a vital organic compound and a key industrial intermediate, prized for its high reactivity and versatility. Its primary value lies in its role as a precursor for unsaturated polyester resins (UPR), which are fundamental to the composites and plastics industries. This product is essential for manufacturers in sectors including polymers, coatings, agriculture, and chemical synthesis, where it is used to produce alkyd resins, lubricant additives, and agricultural chemicals.

Application

• Unsaturated Polyester Resins (UPR): The primary application, used in fiberglass-reinforced plastics for automotive parts, marine hulls, and construction panels.
• Alkyd Resins: A key raw material for surface coatings, paints, and varnishes, providing durability and gloss.
• Lubricant Additives: Used to synthesize succinic anhydride derivatives that act as corrosion inhibitors and detergents in engine oils.
• Agricultural Chemicals: Intermediate in the production of pesticides, herbicides, and plant growth regulators.
• Food Additives: Used in the manufacture of fumaric and malic acid, which are acidulants and flavor enhancers.
• Paper Sizing: Employed in the production of alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA) sizing agents to improve water resistance.
• Co-Polymers: Serves as a monomer for copolymers with styrene, vinyl acetate, and other compounds, modifying material properties.

Basic Information

Product Name	Maleic Anhydride
CAS No.	33225-51-3
Molecular Formula	C4H2O3
Molecular Weight	98.06 g/mol
Synonyms	2,5-Furandione; Maleic Acid Anhydride; cis-Butenedioic Anhydride; Toxilic Anhydride; MAN; MAH; MAnh
EINECS	Contact for details

Quality Control

Our Maleic Anhydride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive quality assurance, with testing protocols aligned with industry standards. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is supplied with every shipment to guarantee product integrity and support your quality control processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases, amines, and oxidizing agents. Due to its nature as a strong acid/organic solvent, ensure containers are kept tightly sealed to prevent moisture absorption and contamination. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	White crystalline solid / flakes
Identification (IR)	Conforms
Assay (Titration)	≥ 99.5%
Melting Point	52.0 - 54.0 °C
Iron (Fe)	≤ 5 ppm
Color (APHA)	≤ 20

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.