Acetylenedicarboxylic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 142-45-0 |
| Product name | Acetylenedicarboxylic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural 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 Acetylenedicarboxylic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Acetylenedicarboxylic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Acetylenedicarboxylic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Intermediates | Drug Synthesis | Reacted with various amines to produce corresponding amide derivatives, serving as key intermediates in drug synthesis |
| Agrochemical Intermediates | Pesticide Production | Used in the synthesis of multiple herbicidal, insecticidal, and fungicidal products |
| Dye Intermediates | Dye Manufacturing | Involved in the synthesis of high-performance dyes, including acid dyes and direct dyes |
| Materials Science | Polymer Synthesis | Employed as a raw material for synthesizing high-molecular-weight materials such as polyester resins and polyurethanes |
Manufacturing Quality Control of Acetylenedicarboxylic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, physical state, and presence of visible impurities. The pure product is typically white or off-white crystalline powder. |
| Melting Point | Capillary Melting Point Method | Determine the melting temperature using a melting point apparatus. Dimethyl acetylenedicarboxylate melts at approximately 180–185°C (with decomposition), which helps assess purity. |
| Assay | Acid-Base Titration | Titrate with standardized sodium hydroxide solution; calculate active ingredient content based on the stoichiometric reaction between carboxylic acid groups and base. |
| Structural Confirmation | Fourier Transform Infrared Spectroscopy (FT-IR) | Analyze characteristic functional group absorption peaks, such as carboxyl group (~1700 cm⁻¹) and carbon-carbon triple bond (~2100–2260 cm⁻¹). |
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase column (e.g., C18) and UV detector to identify impurity peaks, then calculate main peak purity and related substances. |
| Moisture Content | Karl Fischer Titration | Precisely determine water content in the sample; suitable for quality control where moisture sensitivity is critical. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, measure residual levels of heavy metals such as lead, arsenic, mercury, and cadmium to ensure compliance with pharmacopeial or safety standards. |
| Residual Organic Solvents | Gas Chromatography (GC) | Detect organic solvents that may remain from manufacturing processes, such as ethanol, acetone, and ethyl acetate. |
| pH Value (aqueous solution) | pH Meter Method | Prepare an aqueous solution of defined concentration (e.g., 1%), and measure acidity or alkalinity using a calibrated pH meter. |
Technical Specifications of Acetylenedicarboxylic acid
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (NMR) |
| Melting Point | 195-198 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 Acetylenedicarboxylic acid
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NMR Spectra of Acetylenedicarboxylic acid
Packaging of Acetylenedicarboxylic acid
Industrial Acetylenedicarboxylic acid 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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