Is Maleic Anhydride supplied as a solid or a liquid?

Both forms are common. Solid material is typically supplied as white flakes, briquettes, or powder, while molten Maleic Anhydride is transported in heated tanks for bulk industrial handling.

What happens when Maleic Anhydride contacts water?

It reacts with water to form maleic acid. For this reason, solid packaging should remain sealed and dry, and the product should be protected from moisture during storage and processing.

What does Industrial Grade Maleic Anhydride normally specify?

Industrial grade commonly specifies at least 99.5% purity by maleic anhydride content. Other typical checks include low molten color and solidification point, which help confirm quality for resin and chemical synthesis.

How should Maleic Anhydride be stored?

Store solid forms in tightly sealed containers in a cool, dry, well-ventilated area away from heat, sunlight, and water. Molten material requires temperature control to remain liquid and prevent solidification during storage and transfer.

Maleic Anhydride CAS 108-31-6

Maleic Anhydride, CAS 108-31-6, a reactive industrial intermediate supplied in solid or molten form, is positioned for unsaturated polyester resins, alkyd resins, coatings, and polymer modification. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 108-31-6
Synonyms: 2,5-Furandione; Cis-Butenedioic Anhydride
Einecs: 203-571-6
Molecular Formula: C4H2O3
Grade: Industrial grade
Package: Bags / drums / bulk containers (solid or molten)

Request a quote

Share:

Product Description

Maleic Anhydride CAS 108-31-6 is a reactive industrial intermediate with EC 203-571-6 and molecular formula C4H2O3.

Synonyms: 2,5-Furandione; cis-butenedioic anhydride.

CAS: 108-31-6.

Molecular formula: C4H2O3.

It is supplied as solid white flakes, briquettes, or powder, or as molten material in heated tanks.

It is a cyclic anhydride of maleic acid.

It is positioned as a reactive building block for resins and chemical synthesis.

It is used mainly to make unsaturated polyester resins.

It is also used in alkyd resins, coatings, polymer modification, and plastic additives.

It is a building block for specialty and agricultural chemicals.

Confirm purity, molten color, solidification point, and related impurities for the chosen grade.

Check compatibility with the target resin or chemical synthesis conditions.

Store solid forms in tightly sealed containers in a cool, dry, well-ventilated area away from heat, sunlight, and water.

Use appropriate PPE and prevent moisture ingress, spills, or contamination.

Confirm packaging suitable for the solid or molten form and order quantity, and follow the current SDS.

Every batch is checked for purity, molten color, solidification point, and related impurities, with COA/TDS/SDS supplied per grade.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Maleic Anhydride CAS 108-31-6 used for?

A: It is a reactive industrial intermediate used mainly to make unsaturated polyester resins. It is also used in alkyd resins, coatings, polymer modification, plastic additives, and as a building block for specialty and agricultural chemicals.
Q:
Is Maleic Anhydride supplied as a solid or a liquid?

A: Both forms are common. Solid material is typically supplied as white flakes, briquettes, or powder, while molten Maleic Anhydride is transported in heated tanks for bulk industrial handling.
Q:
What happens when Maleic Anhydride contacts water?

A: It reacts with water to form maleic acid. For this reason, solid packaging should remain sealed and dry, and the product should be protected from moisture during storage and processing.
Q:
What does Industrial Grade Maleic Anhydride normally specify?

A: Industrial grade commonly specifies at least 99.5% purity by maleic anhydride content. Other typical checks include low molten color and solidification point, which help confirm quality for resin and chemical synthesis.
Q:
How should Maleic Anhydride be stored?

A: Store solid forms in tightly sealed containers in a cool, dry, well-ventilated area away from heat, sunlight, and water. Molten material requires temperature control to remain liquid and prevent solidification during storage and transfer.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

Current Language

Change Language