Diethyl L-malate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 691-84-9 |
| Product name | Diethyl L-malate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent GradeCosmetic GradeFood 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) |
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Documents We Provide for Diethyl L-malate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diethyl L-malate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diethyl L-malate
| Industry | Application | Process |
|---|---|---|
| Food Additives | Used as a flavoring ingredient to formulate fruit-flavored foods and beverages | Synthesized via esterification, then purified prior to incorporation into food products |
| Fragrances & Personal Care | Used as a fragrance raw material in perfumes, cosmetics, and personal care products | Produced by acid-catalyzed esterification of L-malic acid with ethanol, followed by purification via distillation or extraction |
| Pharmaceutical Intermediates | Employed as a chiral synthetic intermediate in the construction of active pharmaceutical ingredients | Leverages its chiral structure in asymmetric synthesis, commonly applied in the manufacture of antibiotics or cardiovascular drugs |
| Chemical Research | Used as a chiral reagent or solvent in organic synthesis | Applied in specialized laboratory reaction systems, such as asymmetric catalysis or chiral resolution via crystallization-induced asymmetric transformation |
Manufacturing Quality Control of Diethyl L-malate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies L-malic acid diethyl ester peak area against a calibration curve using an internal or external standard. |
| Water Content | Karl Fischer Titration | Measures water by coulometric or volumetric titration based on the iodine-sulfur dioxide reaction in pyridine/methanol medium. |
| Acid Value | Acid-Base Titration with NaOH | Determines free carboxylic acid impurities by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Color | Visual Comparison or Spectrophotometry (APHA/Pt-Co scale) | Evaluates color intensity by matching sample to standardized platinum-cobalt solutions or measuring absorbance at 430 nm. |
| Density | Digital Density Meter (Oscillating U-tube) | Determines mass per unit volume at specified temperature using resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index | Refractometry | Measures bending of light through sample at 20 C using calibrated prism-based instrument to assess purity and concentration. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Determines non-volatile inorganic residue after controlled high-temperature ashing and weighing of the remaining solids. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals by atomizing sample in flame or graphite furnace and measuring absorption of element-specific wavelength radiation. |
| Chloride Content | Ion Chromatography (IC) or Potentiometric Titration | Separates and quantifies chloride ions via conductivity detection (IC) or measures endpoint potential change during silver nitrate titration. |
| Ethanol Content | Gas Chromatography (GC) with FID | Detects residual ethanol by separation on polar column and quantification relative to calibration standards. |
| Related Substances | High-Performance Liquid Chromatography (HPLC) with UV detection | Separates and quantifies structurally related impurities (e.g., monoester, malic acid, diethyl ether) using reverse-phase C18 column and UV absorbance. |
| Optical Rotation | Polarimetry | Measures specific rotation at 20 C using sodium D-line (589 nm) to confirm chiral integrity and enantiomeric purity. |
Technical Specifications of Diethyl L-malate
| Test Item | Specification |
|---|---|
| Appearance | Colorless to almost colorless clear liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Optical Rotation | -13.0 to -10.0 deg (c=1, in methanol) |
| Refractive Index (n20/D) | 1.422 to 1.426 |
| Relative Density (20°C/25°C) | 1.075 to 1.085 g/cm³ |
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 Diethyl L-malate
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| Lot/Batch Number | *Required fields | |
Packaging of Diethyl L-malate
Industrial Diethyl L-malate 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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