China Factory Direct
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| CAS number | 762-21-0 |
| Product name | Diethyl acetylenedicarboxylate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Chemical Industry | As a precursor for succinic acid production | Acidic hydrolysis to produce succinic acid |
| Chemical Industry | For unsaturated polyester resin production | Hydrolysis of diethyl acetylenedicarboxylate |
| Food Industry | As a food additive; used in plasticizer production | Acidic hydrolysis to produce succinic acid, followed by use as a food additive |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | GC-FID | Quantification by gas chromatography with flame ionization detection using an internal standard or external calibration. |
| Water Content | Karl Fischer Titration | Coulometric or volumetric titration based on the reaction of iodine with water in a pyridine-methanol solvent system. |
| Acid Value | Acid-Base Titration | Neutralization of free acid groups with standardized potassium hydroxide solution using phenolphthalein indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Measurement of yellowness intensity by comparison to APHA color standards or absorbance at 430 nm. |
| Density at 20 C | Pycnometry or Digital Density Meter | Determination of mass per unit volume using calibrated glass pycnometer or oscillating U-tube density meter. |
| Refractive Index at 20 C | Refractometry | Measurement of light bending angle at air-liquid interface using calibrated Abbe refractometer. |
| Residue on Evaporation | Gravimetric Analysis | Weighing non-volatile residue after controlled evaporation of a sample under specified temperature and vacuum. |
| Heavy Metals (as Pb) | AAS (Air-Acetylene) | Atomic absorption spectroscopy after wet digestion and matrix-matched calibration for lead and related metals. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride anions using suppressed conductivity detection with carbonate eluent. |
| Residual Solvents (Ethanol, Ethyl Acetate) | GC-FID with Headspace | Quantitative analysis of volatile solvents via headspace sampling followed by capillary GC separation. |
| Peroxide Value | Iodometric Titration | Oxidation of iodide to iodine by peroxides, followed by titration with standardized sodium thiosulfate solution. |
| Appearance (Clarity) | Visual Inspection | Assessment of transparency and absence of suspended particles or haze against a black/white background under controlled lighting. |
| Test Item | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Refractive Index (n20/D) | 1.435–1.445 |
| Relative Density (20°C/25°C) | 1.075–1.085 g/cm³ |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Danger |
| Safety Data Sheet | |
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.