Diethyl maleate Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 141-05-9 |
| Product name | Diethyl maleate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for Diethyl maleate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diethyl maleate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diethyl maleate
| Industry | Application | Process |
|---|---|---|
| Chemical | Organic synthesis intermediate | Used as an intermediate in the synthesis of pesticides, pharmaceuticals, and polymeric materials; participates in cycloaddition reactions such as Diels–Alder reactions |
| Pesticides | Raw material for insecticides and fungicides | Serves as a starting material for synthesizing certain heterocyclic pesticides, enabling construction of the active molecular scaffold |
| Pharmaceuticals | Drug synthesis intermediate | Employed in the preparation of anti-inflammatory and cardiovascular drugs; the ester group undergoes condensation or hydrolysis reactions |
| Polymers | Copolymer monomer | Copolymerized with monomers such as ethylene and propylene to produce functional polymers with tailored properties |
| Fine chemicals | Additive synthesis | Used to synthesize additives including plasticizers and stabilizers, enhancing material processing performance |
Manufacturing Quality Control of Diethyl maleate
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, transparency, and presence of suspended matter or precipitate under natural or standard lighting conditions. |
| Identification Test | Infrared Spectroscopy (FT-IR) | Determine the characteristic absorption peaks of the sample using an infrared spectrometer and compare with reference spectra to confirm molecular structure. |
| Assay | Gas Chromatography (GC) | Separate the components of diethyl maleate using gas chromatography and quantify the main component by internal or external standard method. |
| High-Performance Liquid Chromatography (HPLC) | Suitable for cases involving thermally unstable or high-boiling-point impurities; separate and quantify the main component using a reversed-phase chromatographic column. | |
| Water Content | Karl Fischer Titration | Determine trace moisture content in the sample using volumetric or coulometric methods to ensure compliance with drying loss requirements. |
| Acid Value | Acid-Base Titration | Use phenolphthalein as an indicator and titrate free acids with a standard potassium hydroxide ethanol solution to calculate the acid value (mg KOH/g). |
| Color | Platinum-Cobalt Colorimetry (APHA/Hazen) | Compare the sample with standard platinum-cobalt solutions to determine its yellowness, assessing product purity and oxidation level. |
| Boiling Range/Boiling Point | Distillation Method | Determine the initial boiling point and dry point using micro or standard distillation apparatus to verify if the boiling range meets specifications. |
| Refractive Index | Abbe Refractometer Method | Measure the refractive index of the sample at a specified temperature (e.g., 20°C) as an auxiliary identification and purity parameter. |
| Density | Density Meter or Pycnometer Method | Measure the sample's density at standard temperature for quality consistency control. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, measure residual levels of heavy metals such as lead, cadmium, mercury, and arsenic to ensure compliance with safety limits. |
| Organic Impurities | Gas Chromatography-Mass Spectrometry (GC-MS) | Qualitative and semi-quantitative analysis of unknown impurities to identify by-products or degradation products (e.g., monoethyl maleate, ethanol). |
| Peroxides | Iodometric Method or Test Strip Method | Detect the presence of peroxides in the sample to prevent oxidative degradation during storage. |
Technical Specifications of Diethyl maleate
| Test Item | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.426–1.430 |
| Relative Density (20°C/4°C) | 1.072–1.078 g/cm³ |
| Acid Value (mg KOH/g) | <=0.5 |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of Diethyl maleate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Diethyl maleate
Packaging of Diethyl maleate
Industrial Diethyl maleate 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply