What is Maleic Acid CAS 110-16-7?

Maleic acid is cis-butenedioic acid, an unsaturated dicarboxylic acid with the molecular formula C4H4O4 and molecular weight 116.07 g/mol. It is normally supplied as a white crystalline solid or flakes and is soluble in water, ethanol, and acetone.

How does Maleic Acid differ from Fumaric Acid?

Maleic acid is the cis isomer of butenedioic acid, while fumaric acid is the trans isomer. The cis configuration makes maleic acid more water-soluble and more reactive in many addition, esterification, and polymerization reactions, and it can be isomerized to fumaric acid under suitable conditions.

What are the main uses of Maleic Acid?

It is mainly used as a reactive intermediate in unsaturated polyester resins, alkyd and specialty resins, and the production of maleates and fumaric acid derivatives. It is also used in surface treatment formulations, buffers, and other fine-chemical syntheses.

What grades and specifications are available?

Maleic acid is commonly supplied as industrial or technical grade and higher-purity polymerization or pharmaceutical grade. Commercial specifications often list assay around 99% or higher, with limits on moisture, residue on ignition, and fumaric acid content.

How should Maleic Acid be stored and handled?

Store it in tightly sealed, moisture-resistant containers in a cool, dry, well-ventilated area. Protect it from moisture, direct sunlight, heat sources, and incompatible materials, and maintain package integrity during transport and handling.

Maleic Acid CAS 110-16-7

Maleic Acid, also called cis-butenedioic acid, CAS 110-16-7, an unsaturated dicarboxylic acid supplied as a white crystalline solid or flakes, is positioned as a reactive intermediate for resins and chemical synthesis. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 110-16-7
Synonyms: Cis-butenedioic acid; Maleinic acid
Einecs: 203-742-5
Molecular Formula: C4H4O4
Grade: Industrial / chemical synthesis grade
Package: Standard export packaging

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Product Description

Maleic Acid CAS 110-16-7 is an unsaturated dicarboxylic acid with EC 203-742-5 and molecular formula C4H4O4.

Synonyms: Cis-butenedioic acid; Maleinic acid.

CAS: 110-16-7.

Molecular formula: C4H4O4.

It is supplied as a white crystalline solid or flakes.

It has a molecular weight of about 116.07 g/mol.

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

It is used in unsaturated polyester resins, alkyd and specialty resins.

It is used in the production of maleates and fumaric acid derivatives.

It is also used in surface treatment formulations, buffers, and fine-chemical syntheses.

Confirm assay, appearance, moisture, residue on ignition, and fumaric acid content for the chosen grade.

Check compatibility with the target resin or chemical synthesis conditions.

Store in tightly sealed, moisture-resistant containers in a cool, dry, well-ventilated area.

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

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

Every batch is checked for assay, appearance, moisture, residue on ignition, and fumaric acid content, 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 Acid CAS 110-16-7?

A: Maleic acid is cis-butenedioic acid, an unsaturated dicarboxylic acid with the molecular formula C4H4O4 and molecular weight 116.07 g/mol. It is normally supplied as a white crystalline solid or flakes and is soluble in water, ethanol, and acetone.
Q:
How does Maleic Acid differ from Fumaric Acid?

A: Maleic acid is the cis isomer of butenedioic acid, while fumaric acid is the trans isomer. The cis configuration makes maleic acid more water-soluble and more reactive in many addition, esterification, and polymerization reactions, and it can be isomerized to fumaric acid under suitable conditions.
Q:
What are the main uses of Maleic Acid?

A: It is mainly used as a reactive intermediate in unsaturated polyester resins, alkyd and specialty resins, and the production of maleates and fumaric acid derivatives. It is also used in surface treatment formulations, buffers, and other fine-chemical syntheses.
Q:
What grades and specifications are available?

A: Maleic acid is commonly supplied as industrial or technical grade and higher-purity polymerization or pharmaceutical grade. Commercial specifications often list assay around 99% or higher, with limits on moisture, residue on ignition, and fumaric acid content.
Q:
How should Maleic Acid be stored and handled?

A: Store it in tightly sealed, moisture-resistant containers in a cool, dry, well-ventilated area. Protect it from moisture, direct sunlight, heat sources, and incompatible materials, and maintain package integrity during transport and handling.

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