Description

Maleic Anhydride is a vital organic compound and a key industrial intermediate known 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 construction industries. This product is essential for manufacturers in sectors including plastics, coatings, agriculture, and specialty chemicals, where it serves as a building block for resins, surface coatings, lubricant additives, and agricultural chemicals.

Application

• Unsaturated Polyester Resins (UPR): The primary application, used in fiberglass-reinforced plastics for automotive parts, marine vessels, and construction panels.
• Surface Coatings & Alkyd Resins: A key component in the production of high-performance industrial and decorative paints and varnishes.
• Lubricant Additives: Used to synthesize succinimide-based dispersants that keep engines clean and improve oil performance.
• Agricultural Chemicals: An intermediate in the manufacture of pesticides, herbicides, and plant growth regulators.
• Food & Beverage Additives: Used in the production of fumaric and malic acid, which serve as food 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 co-polymers with styrene, vinyl acetate, and other compounds for various plastic and resin modifications.

Basic Information

Product Name	Maleic Anhydride
CAS No.	108-31-6
Molecular Formula	C4H2O3
Molecular Weight	98.06 g/mol
Synonyms	2,5-Furandione; Maleic Acid Anhydride; cis-Butenedioic Anhydride; Toxilic Anhydride; MAN; MAH; Dihydro-2,5-dioxofuran
EINECS	203-571-6

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 documentation, including Certificates of Analysis (COA) that detail key parameters such as assay, melting point, and impurity profiles. Our quality commitment aligns with major industrial standards, and we can support requirements for REACH, FDA (for indirect food contact applications), and other global regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and hydrolysis. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and oxidizing agents.

Specification

Item	Specification
Appearance	White crystalline flakes or briquettes
Identification (IR)	Conforms
Assay (GC)	≥ 99.5 %
Melting Point	52.0 - 54.0 °C
Color (Pt-Co)	≤ 20
Iron (Fe)	≤ 3 ppm
Ash Content	≤ 0.005 %

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