Maleic Anhydride

Basic Information of Maleic Anhydride

Maleic Anhydride (CAS No. 108-31-6) is produced to meet stringent quality standards, ensuring exceptional purity and consistent performance for your specialized applications:

CAS No.:	108-31-6
EC No.:	203-571-6
Linear Formula:	(CH=CH)(C=O)₂O
Molecular Weight:	98.06
Appearance:	Transparent Liquid
Odor:	Acrid, pungent, suffocating odor.
Melting Point:	51-56 °C (lit.)
Boiling point:	200 °C (lit.)
Density:	1.48
Solubility:	Reacts with water to form maleic acid; soluble in acetone, benzene, toluene, xylene.
Flash Point:	218 °F
Purity:	Corrosive, combustible, strong irritant.
RIDADR:	UN 2215 8/PG 3
Chemical Structure:

Our commitment to delivering high-purity MA ensures a reliable and efficient component for your diverse manufacturing and synthesis needs.

Primary Applications of Maleic Anhydride (MA)

Maleic Anhydride's unique reactivity, characterized by its unsaturated five-membered ring structure, drives its extensive utility in various industries:

1. Unsaturated Polyester Resins (UPR):

   This is the largest application for Maleic Anhydride. UPRs are widely used in fiberglass reinforced plastics for construction (e.g., bathtubs, pipes), automotive parts, marine applications (boats), and other composite materials, providing strength and durability.

2. 1,4-Butanediol (BDO) and Derivatives:

   Maleic Anhydride is a key raw material for the production of 1,4-Butanediol (BDO) via hydrogenation. BDO itself is a crucial intermediate for engineering plastics (like PBT, PU), tetrahydrofuran (THF), and gamma-butyrolactone (GBL).

3. Lubricant Additives:

   Derivatives of Maleic Anhydride, particularly maleated polyolefins, are used as dispersants and viscosity index improvers in lubricating oils and fuels, enhancing their performance in engines and machinery.

4. Agrochemicals & Pesticides:

   MA is an intermediate in the synthesis of various agrochemicals, including certain herbicides, insecticides, and plant growth regulators, contributing to agricultural productivity and crop protection.

5. Food Additives & Flavor Enhancers:

   Although Maleic Anhydride itself is not a food additive, it is used to produce fumaric acid and maleic acid, which are widely employed as acidulants and flavor enhancers in the food and beverage industry.

6. Specialty Resins & Copolymers:

   It's used in the production of various other resins and copolymers, including alkyd resins, which are used in paints and coatings, and maleic anhydride copolymers, which find applications as dispersants, thickeners, and sizing agents.

Customized Maleic Anhydride Solutions to Meet Your Needs

• Exceptional Purity & Consistency: Our Maleic Anhydride is manufactured to high purity specifications, crucial for the quality and performance of your end products.

• Commitment to Quality & Safety: We adhere to the highest industry standards for quality management, safety, and environmental responsibility across all our operations, ensuring peace of mind for our clients.

Hazards Classification

• GHS Classification: Corrosive (GHS05), Acute Toxicity (GHS06), Health Hazard (GHS08), Irritant (GHS07)

• Hazard Statements: Causes severe skin burns and eye damage; harmful if swallowed or inhaled; may cause respiratory irritation; may cause an allergic skin reaction; may cause allergy or asthma symptoms or breathing difficulties if inhaled.

• UN Number: UN 2215

• Hazard Class: 8 (Corrosive Substances)

• Packing Group: III