Dimethyl Maleate for Industrial Chemical Synthesis

Dimethyl Maleate for Industrial Applications

Dimethyl maleate is a diester of maleic acid used as a specialty chemical intermediate in organic synthesis, resin chemistry, and selected industrial formulations. With the molecular formula C6H8O4, it is valued by chemical manufacturers and industrial formulators for its reactive ester structure and suitability for further chemical processing.

Product Overview

Dimethyl maleate, also known as dimethyl (Z)-butenedioate, is the dimethyl ester of maleic acid. It is an unsaturated organic ester containing a carbon-carbon double bond and two ester groups. These structural features make it useful as a chemical building block in synthesis and as a functional intermediate in selected industrial processes.

For B2B procurement, product selection should consider chemical identity, assay, moisture content, impurity profile, packaging compatibility, and the requirements of the intended downstream process. Dimethyl maleate should not be confused with dimethyl fumarate, its geometric isomer, which has a different molecular arrangement and CAS number.

Key Applications

• Organic synthesis: Used as a starting material or intermediate in selected chemical synthesis routes.
• Resin and polymer chemistry: May be used in specialized formulation or synthesis processes where an unsaturated ester is required.
• Fine chemical manufacturing: Suitable for industrial processes that specify dimethyl maleate as a reaction intermediate or feedstock.
• Research and development: Used in laboratory development, process evaluation, and chemical synthesis work.

Suitability depends on the reaction pathway, process conditions, impurity limits, and end-use requirements. Buyers should verify compatibility with the intended formulation or synthesis process before placing a production-scale order.

Dimethyl Maleate Specifications

Buyer Guide: Dimethyl Maleate vs. Dimethyl Fumarate

One of the most important purchasing checks is confirming the identity of the requested isomer. Dimethyl maleate and dimethyl fumarate have the same molecular formula and molecular weight, but differ in the geometry around the carbon-carbon double bond. They are not automatically interchangeable in synthesis, reaction design, or formulation work.

For reliable incoming inspection, specify both the product name and CAS number on the purchase order. Review the COA against the agreed assay, impurity profile, and analytical method rather than relying on the molecular formula alone.

Quality Control and Technical Documentation

For industrial chemical procurement, a fit-for-purpose quality specification should connect analytical results with the intended process. Depending on the agreed grade, quality control may include:

• Identity verification against the specified chemical substance.
• Assay and purity testing by a suitable validated chromatographic method.
• Water content determination where moisture can affect process performance.
• Color, acidity, and relevant impurity checks according to the purchase specification.
• Container integrity and packaging checks before dispatch.
• Review of batch documentation, including the COA and applicable SDS.

Testing parameters and acceptance limits should be agreed before shipment. Third-party testing can be considered when independent verification is required by the buyer's quality system or downstream customer.

Why Choose This Product

• Defined chemical identity: Product identification by chemical name and CAS number helps reduce the risk of isomer substitution.
• Application-oriented specifications: Assay and impurity requirements can be aligned with the buyer's synthesis or formulation needs.
• Bulk procurement support: Industrial quantities and packaging configurations can be arranged according to order requirements.
• Technical documentation: COA, TDS, and SDS support purchasing review, incoming inspection, and safe handling.
• Flexible sourcing requirements: Buyers can define acceptance criteria, packaging, and documentation needs before ordering.

Packaging and Bulk Supply

Dimethyl maleate is a liquid chemical, so packaging should be selected for chemical compatibility, leak prevention, transport conditions, and the buyer's receiving and storage systems. Suitable sealed drums or other compatible industrial containers may be used, with package sizes and shipment configurations adapted to the order.

For bulk procurement, buyers should confirm container material compatibility, seal integrity, storage conditions, transportation classification, and any applicable dangerous-goods documentation before dispatch. The SDS and transport requirements should guide handling throughout the supply chain.

OEM, Custom Packaging, and Procurement Support

Industrial buyers may specify packaging format, container size, batch documentation, labeling requirements, and analytical acceptance criteria according to their internal purchasing procedures. Custom supply arrangements should preserve the defined chemical identity and agreed product specification.

Before confirming an order, provide the intended application, target assay, required impurity limits, quantity range, packaging preference, destination market, and documentation requirements. These details help align the quotation and supply format with the receiving facility's procedures.

Frequently Asked Questions

What is the CAS number of dimethyl maleate?

The CAS number of dimethyl maleate is 624-48-6. Buyers should include this number on inquiries and purchase orders to distinguish the required cis isomer from dimethyl fumarate, which has a different CAS number despite sharing the same molecular formula and molecular weight.

How is dimethyl maleate purity tested?

Purity can be assessed by gas chromatography or HPLC, depending on the validated method and product specification. For procurement, the buyer should agree on the minimum assay, relevant impurity limits, and reporting basis before shipment, then compare the batch COA with the agreed acceptance criteria.

How should dimethyl maleate be stored?

Keep the product in a tightly sealed, compatible container in a cool, dry, well-ventilated area, away from direct sunlight and heat. Storage and handling must follow the product SDS, including any precautions related to exposure, incompatible materials, spill response, and transport.

What information should be included in a bulk inquiry?

Include the chemical name, CAS number, required assay, impurity limits, order quantity, packaging format, destination, and required documents. If the material will be used in a specific synthesis or formulation, explain the relevant process requirements so the proposed specification can be evaluated against the intended application.

Conclusion

Dimethyl maleate is a useful industrial intermediate for chemical synthesis and selected resin or formulation processes. Successful procurement depends on confirming the correct isomer, setting fit-for-purpose purity and impurity limits, reviewing batch documentation, and choosing compatible packaging and storage conditions.

Contact us today to request samples, a COA, technical documents, and a wholesale quotation for dimethyl maleate.