Maleimide Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 541-59-3 |
| Product name | Maleimide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeElectronic Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for Maleimide
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Maleimide Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Maleimide
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | As a synthetic intermediate in drug manufacturing | Introduces the maleimide group via chemical reaction for subsequent synthesis steps |
| Materials | Preparation of functional polymers | Introduces the maleimide group into polymer chains to enhance material properties |
| Biotechnology | Biomolecule labeling and conjugation | Leverages the high selectivity of maleimide for thiol groups to enable labeling or conjugation |
| Agrochemicals | Synthesis of agrochemical intermediates | Derivatizes the maleimide structure to produce high-efficacy, low-toxicity pesticides |
| Coatings | Enhancing coating heat resistance and adhesion | Copolymerizes maleimide monomers into coating resins |
| Photovoltaics | Preparation of high-performance photovoltaic materials | Introduces the maleimide group to optimize photoelectric conversion efficiency |
Manufacturing Quality Control of Maleimide
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC with UV detection | Quantitative determination based on peak area comparison against a certified reference standard using reversed-phase chromatography. |
| Moisture Content | Karl Fischer titration | Electrochemical titration measuring water content via reaction of iodine with sulfur dioxide in pyridine/methanol medium. |
| Melting Point | Capillary melting point apparatus | Thermal transition measurement where solid-to-liquid phase change is observed visually or automatically under controlled heating. |
| Residue on Ignition | Gravimetric analysis | Mass of non-volatile inorganic residue determined after high-temperature ashing and cooling to constant weight. |
| Heavy Metals | ICP-OES | Multi-element quantification of trace metal impurities (e.g., Pb, Cd, Hg, As) by atomic emission spectroscopy after acid digestion. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride anions using suppressed conductivity detection after aqueous extraction. |
| Related Substances | HPLC with UV detection | Identification and quantification of structurally similar impurities (e.g., maleic acid, maleic anhydride, succinimide) using gradient elution. |
| Acid Value | Acid-base titration with NaOH | Neutralization of acidic impurities (e.g., residual maleic acid) using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Appearance | Visual inspection | Assessment of physical state, color, and clarity against established reference standards under controlled lighting conditions. |
| Solubility in Common Solvents | Qualitative dissolution test | Observation of complete dissolution behavior in specified solvents (e.g., acetone, ethyl acetate, chloroform) at room temperature. |
| Loss on Drying | Thermogravimetric analysis (TGA) | Mass loss measured upon heating under nitrogen or air to remove volatile components including residual solvents and moisture. |
| pH of Aqueous Solution | Potentiometric pH measurement | Determination of hydrogen ion activity in a saturated aqueous suspension using calibrated glass electrode and pH meter. |
Technical Specifications of Maleimide
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 87–91°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Conforms to reference spectrum |
| Identification (IR) | Conforms to reference spectrum |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Maleimide
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Maleimide
Packaging of Maleimide
Industrial Maleimide Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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