China Factory Direct
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| CAS number | 14282-78-1 |
| Product name | 4-Methyl-2-thiophenecarboxylic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent GradeCosmetic GradeFood Grade |
| Packaging | 25KG/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) |
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 |
|---|---|---|
| Pharmaceuticals | Intermediate | Used in the synthesis of pharmaceutical intermediates for treating certain diseases |
| Agrochemicals | Intermediate | Used in the synthesis of intermediates for certain insecticides or herbicides |
| Materials Science | New Material Synthesis | Serves as a raw material in the synthesis of novel materials |
| Research Institutions | Chemical Research | Used as an experimental reagent for studying specific chemical reactions or mechanisms |
| Cosmetics | Formulation Ingredient | Potentially used in specialized formulations as an active or auxiliary ingredient |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, condition, and presence of visible impurities under natural light or standard light source. |
| Melting Point | Capillary Melting Point Determination | Determine the temperature range at which the sample transitions from solid to liquid using a melting point apparatus, used to judge purity and material properties. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use reverse-phase HPLC (e.g., C18 column), with UV detection (around 254 nm), quantifying the main component using external or internal standard methods. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Separate the main peak and impurity peaks using gradient elution, detect and quantify organic impurities (such as starting materials, by-products, degradation products, etc.). |
| Moisture | Karl Fischer Titration | Determine the moisture content by quantitatively reacting water with iodine and sulfur dioxide in the presence of pyridine and methanol. |
| Dry Loss | Thermogravimetric Analysis (TGA) or Oven Method | Dry the sample at a specified temperature (e.g., 105°C) for a certain period of time, and calculate the volatile substance content based on the mass loss. |
| Heavy Metals | Sulfide Colorimetric Method or ICP-MS | Detect heavy metal impurities such as lead and arsenic according to pharmacopoeia methods (e.g., ChP or USP); ICP-MS provides higher sensitivity and allows simultaneous multi-element detection. |
| Residual Solvents | Gas Chromatography (GC) | Use headspace sampling-GC with FID detector to detect residual organic solvents (e.g., methanol, ethanol, acetone) used in production processes. |
| Infrared Spectroscopy (IR) | Fourier Transform Infrared Spectroscopy (FTIR) | Analyze the infrared absorption spectrum after pressing the sample into a pellet or coating it as a film, compare with standard spectra to confirm molecular structure and functional groups. |
| Polymorphic Analysis | X-ray Diffraction (XRD) | Analyze the crystal structure of solid samples to determine whether multiple polymorphic forms exist, ensuring batch consistency. |
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (by LC-MS) |
| Melting Point | 124–128 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| 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.