2,3-Dimethylmaleic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 766-39-2 |
| Product name | 2,3-Dimethylmaleic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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 2,3-Dimethylmaleic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2,3-Dimethylmaleic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2,3-Dimethylmaleic anhydride
| Industry | Application | Process |
|---|---|---|
| Chemical Synthesis | Monomer for synthetic resins and polymers | Used as a comonomer in free-radical polymerization to produce high-performance polymeric materials |
| Pharmaceutical Chemicals | Pharmaceutical intermediate | Applied in the synthesis of nitrogen-containing heterocyclic drugs via reaction with amines to form imide structures |
| Pesticide Industry | Pesticide intermediate | Used to synthesize biologically active compounds for fungicides or plant growth regulators |
| Coatings Industry | Raw material for modified resins | Reacted with polyols or amines to produce modified alkyd resins or epoxy curing agents, enhancing coating heat resistance and adhesion |
| High-Performance Polymers | Precursor for high-temperature-resistant polymers | Applied in the synthesis of polyimides or polyesterimides for high-temperature applications such as electronic insulation materials |
Manufacturing Quality Control of 2,3-Dimethylmaleic anhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC with UV detection | Quantification based on peak area comparison against a certified reference standard using reversed-phase chromatography and UV absorbance at 210 nm. |
| Melting Point | Capillary melting point apparatus | Determination of temperature range at which solid transitions to liquid, indicating purity and identity via deviation from literature value (79-81 C). |
| Color | Visual comparison against APHA color standard | Subjective assessment of sample solution color intensity relative to platinum-cobalt standards in dilute solution. |
| Moisture Content | Karl Fischer titration | Electrochemical titration measuring water content via stoichiometric reaction between water, iodine, sulfur dioxide, and base in methanol medium. |
| Acid Number | Acid-base titration with NaOH | Neutralization of acidic groups (e.g., residual acid or hydrolyzed anhydride) using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Residue on Ignition | Gravimetric analysis after high-temperature ashing | Measurement of non-volatile inorganic impurities by weight difference before and after heating sample at 750 C in a muffle furnace. |
| Heavy Metals | ICP-OES | Quantitative determination of metallic impurities (e.g., Pb, Fe, Cu) by plasma excitation and elemental emission spectroscopy. |
| Chloride Content | Potentiometric titration with AgNO3 | Precipitation titration where chloride ions react with silver nitrate; endpoint detected by silver ion-selective electrode. |
| Related Substances | GC-FID | Separation and quantification of volatile organic impurities (e.g., isomers, precursors, degradation products) using gas chromatography with flame ionization detection. |
| Sulfated Ash | Gravimetric analysis after sulfuric acid treatment | Determination of inorganic residue after carbonization and sulfuric acid digestion followed by incineration at 750 C. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light caused by chiral impurities or enantiomeric excess in solution. |
| Volatile Matter | Thermogravimetric analysis (TGA) | Weight loss measurement upon controlled heating under nitrogen to quantify low-boiling or thermally labile components. |
Technical Specifications of 2,3-Dimethylmaleic anhydride
| Test Item | Specification |
|---|---|
| Appearance | White to orange crystalline powder |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 72–76°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Acid Value (mg KOH/g) | 430–450 mg KOH/g |
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 2,3-Dimethylmaleic anhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2,3-Dimethylmaleic anhydride
Packaging of 2,3-Dimethylmaleic anhydride
Industrial 2,3-Dimethylmaleic anhydride 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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