Maleic Acid CAS 110-16-7

Maleic Acid is positioned in industrial supply as a reactive organic acid intermediate, widely used in the production of unsaturated polyester resins, alkyd resins, and various functional materials. Its cis-configuration and double bond structure enable participation in polymerization and modification reactions, making it relevant in coatings, adhesives, and chemical processing systems.

It is typically supplied as a solid material (flakes or crystalline form) suitable for controlled handling in industrial environments. The product is used as a feedstock or formulation component rather than a direct end-use ingredient. Standard export packaging is available, with supporting documentation such as COA, TDS, and SDS provided for procurement and technical evaluation.

CAS: 110-16-7
Synonyms: Cis-butenedioic acid; Maleinic acid
Einecs: 203-742-5
Molecular Formula: C₄H₄O₄
Grade: Typically supplied for industrial and chemical synthesis use
Package: Available in standard export packaging; packaging format arranged according to order quantity and handling requirements

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Product Description

1 Physicochemical Properties

2 Typical Applications

3 Packaging

4 Storage

5 FAQ

Physicochemical Properties

Item	Description
Appearance	White crystalline solid or flakes
Odor	Slight acidic odor
Melting Point	Approx. 130–135°C
Boiling Point	Decomposes before boiling
Solubility	Soluble in water, ethanol, and acetone
Density	Approx. 1.6 g/cm³
pKa	Approx. 1.9 / 6.3
Reactivity	Contains reactive double bond; participates in polymerization and esterification

Typical Applications

Unsaturated polyester resins: Used as a key intermediate in resin synthesis for coatings, composites, and construction materials.
Alkyd and specialty resins: Acts as a modifying acid component to introduce unsaturation and improve performance characteristics.
Chemical intermediate: Utilized in the production of maleates, fumaric acid derivatives, and other downstream chemicals.
Surface treatment and functional chemicals: Applied in formulations where acidity and reactivity are required for modification or stabilization.

Specific end-use applications should be evaluated based on formulation design and regional regulatory requirements.

Packaging

Maleic Acid is supplied as a solid material and packed in moisture-resistant, sealed packaging to maintain stability during storage and transport. Common formats include multi-layer paper bags with inner liners or fiber drums, suitable for industrial handling.

Packaging is designed to minimize moisture uptake and contamination. Palletized and bulk shipment arrangements can be organized depending on order volume and logistics requirements.

Storage

Store in a cool, dry, and well-ventilated area. Keep containers tightly sealed to prevent moisture absorption and caking. Avoid exposure to direct sunlight, heat sources, and incompatible materials.

Ensure packaging integrity is maintained during storage and transport to preserve product quality.

FAQ

Can supply be arranged for bulk quantities?
Bulk supply and suitable packaging formats can be arranged based on order requirements.

What is the primary role of Maleic Acid in industrial use?
It is mainly used as a reactive intermediate in resin synthesis and chemical production processes.

In what form is Maleic Acid typically supplied?
It is generally supplied as a crystalline solid or flakes for industrial processing.

How does Maleic Acid differ from Fumaric Acid?
Maleic Acid is the cis-isomer, offering higher reactivity in certain chemical reactions compared to the trans-isomer (fumaric acid).

What should be considered when storing Maleic Acid?
It should be protected from moisture and stored in sealed containers in dry conditions.

Is documentation available for procurement?
Yes, COA, TDS, and SDS can be provided to support quality verification and safe handling.

FAQ - Technical & Supply Chain

Documents

Documents and Product Support

For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

COA for batch-based quality reference
TDS for key physical and chemical information
SDS / MSDS for handling, storage, and safety reference
Packing information for sample, trial, and bulk orders
Technical communication based on application and specification requirements

Quotation

Information to Confirm Before Quotation

Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.

Product name and CAS number
Application or intended end use
Required purity, grade, or specification
Sample quantity, trial order, or bulk demand
Preferred packing form or net weight
Destination country or port
Required documents or compliance expectations

Storage & Handling

Packaging, Storage, and Handling Notes

Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.

Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.

Supply Support

Sample, Bulk Order and Repeat Supply Support

Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.

For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.

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Product Categories

Tags:

Dicarboxylic Acid Polymer Modifier Resin Intermediate Unsaturated Carboxylic Acid

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