Description

N-Phenylmaleimide (CAS NO 941-69-5) is a versatile and highly reactive chemical intermediate, primarily valued for its role as a dienophile in Diels-Alder reactions and as a monomer for polymer modification. Its core value proposition lies in its ability to introduce the maleimide functional group into larger molecules, imparting enhanced thermal stability, cross-linking capability, and specific reactivity to advanced materials. This compound is essential for researchers and manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking to develop high-performance resins, adhesives, and biologically active compounds.

Application

• As a key dienophile in Diels-Alder reactions for synthesizing complex organic frameworks and natural product analogs.
• As a cross-linking agent and comonomer in the production of high-temperature resistant polymers, polyimides, and epoxy resins.
• In the synthesis of pharmaceutical intermediates and biologically active molecules, leveraging its reactive double bond.
• For the modification of polymers and rubbers to improve thermal, mechanical, and adhesive properties.
• In the research and development of advanced materials, including liquid crystals and photoresists.
• As a chemical intermediate in agrochemical and dye manufacturing processes.

Basic Information

Product Name	N-Phenylmaleimide
CAS No.	941-69-5
Molecular Formula	C10H7NO2
Molecular Weight	173.17 g/mol
Synonyms	1-Phenyl-1H-pyrrole-2,5-dione; Maleimide, N-Phenyl-; Phenylmaleimide; N-PMI; 2,5-Pyrroledione, 1-phenyl-; N-Phenylmaleic imide; 1-Phenylmaleimide; N-Phenyl-2,5-pyrroledione
EINECS	213-381-4

Quality Control

Our n-Phenylmaleimide is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and purity determination, to meet exacting customer requirements. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	88 - 92 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.