3-Ethynylthiophene Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 67237-53-0 |
| Product name | 3-Ethynylthiophene |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeElectronic GradeIndustrial Grade |
| Packaging | 25L/drum |
| 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 3-Ethynylthiophene
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-Ethynylthiophene Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-Ethynylthiophene
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of pharmaceutical intermediates | Used to generate drug molecules with specific structures via chemical reaction |
| Materials | Preparation of conductive polymers | Applied in the synthesis of polythiophene-based conductive materials |
| Electronics | Production of organic semiconductor materials | Employed as a monomer in the synthesis of conjugated polymers |
| Chemicals | Manufacture of functional dyes | Utilized in designing compounds with specialized optical properties |
Manufacturing Quality Control of 3-Ethynylthiophene
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies 3-ethynylthiophene peak area relative to a calibration curve using an internal or external standard. |
| Water Content | Karl Fischer Titration (Coulometric mode) | Electrochemical titration based on the reaction of iodine with water in a controlled anhydrous medium. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Measures non-volatile inorganic impurities by weighing sample before and after high-temperature ashing. |
| Heavy Metals (as Pb) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Atomizes and excites sample in plasma; quantifies metal emissions at characteristic wavelengths. |
| Chloride Impurity | Ion Chromatography (IC) with Conductivity Detection | Separates chloride ions on an anion-exchange column and detects them via changes in solution conductivity. |
| Acidity (as HCl) | Acid-Base Titration with Potentiometric End-Point Detection | Neutralizes acidic impurities with standardized NaOH; endpoint determined by pH inflection. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement at 455 nm | Compares sample color intensity against APHA platinum-cobalt standards or measures absorbance at 455 nm. |
| Residual Solvents (e.g., THF, acetone) | Headspace Gas Chromatography (HS-GC) with FID | Equilibrates sample in sealed vial, injects headspace vapor into GC for separation and quantification. |
| Stereochemical Purity / Isomeric Impurities | Chiral Gas Chromatography (cGC) or Chiral HPLC | Resolves enantiomers or structural isomers using chiral stationary phases and detects eluted peaks. |
| Thermal Stability (Decomposition Onset) | Differential Scanning Calorimetry (DSC) | Measures heat flow difference between sample and reference during controlled heating to detect exothermic decomposition events. |
Technical Specifications of 3-Ethynylthiophene
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow 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) | 1.565–1.575 |
| Relative Density (20°C/25°C) | 1.12–1.14 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 3-Ethynylthiophene
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3-Ethynylthiophene
Packaging of 3-Ethynylthiophene
Industrial 3-Ethynylthiophene 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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