China Factory Direct
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| CAS number | 10312-55-7 |
| Product name | 2-AMINOTEREPHTHALIC ACID |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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) |
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 |
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| Materials Science / Polymers | Used in the synthesis of specialty polyamide and polyimide resins to enhance thermal stability and mechanical strength | Polymerization |
| Pharmaceuticals | Used in the synthesis of anticancer agents, antibiotics, or as a pharmaceutical intermediate | Organic synthesis |
| Chemical Analysis | Used as a ligand in the synthesis of metal–organic frameworks for gas adsorption, separation, or catalytic research | Solvothermal / hydrothermal synthesis |
| Dyes and Pigments | Used in the synthesis of high-performance dyes or dye/pigment intermediates | Coupling / condensation reactions |
| Test Item | Common Testing Method | Method Overview |
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| Appearance | Visual Inspection | Observe the sample's color and condition under natural light or standard illumination to determine if it is a white to pale crystalline powder, and check for impurities, lumps, etc. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reverse-phase C18 column with a UV detector (usually around 254 nm), employing a mobile phase of water-organic solvent (such as methanol or acetonitrile) containing a buffer salt for gradient or isocratic elution. The content of the main component is calculated using external standard or internal standard method. |
| Purity (Related Substances) | High-Performance Liquid Chromatography (HPLC) | Same as above. HPLC is used to detect impurity peaks other than the main peak, calculate the content of each impurity and total impurities to evaluate chemical purity. Usually, the single impurity should be ≤0.1%, and total impurities ≤0.5%. |
| Moisture | Karl Fischer Titration (Karl Fischer) | Determine the moisture content in the sample using electrochemical titration principles, suitable for trace moisture analysis, with accurate and reliable results. It can be divided into volumetric and coulometric methods. |
| Melting Point | Capillary Melting Point Method | Fill the sample into a capillary tube and gradually heat it in a melting point apparatus. Observe the initial melting and complete melting temperature to identify and preliminarily assess the purity. Typical melting point range: >300°C (decomposition). |
| Residual Solvents | Gas Chromatography (GC) | Detect residual organic solvents (such as methanol, ethanol, DMF, etc.) from the production process according to ICH guidelines, using headspace sampling-gas chromatography with FID detection for quantification. |
| Heavy Metals | Atomic Absorption Spectrometry (AAS) or ICP-MS | Digest the sample and then use atomic absorption spectrometry or inductively coupled plasma mass spectrometry to determine the residual levels of heavy metals such as lead, arsenic, cadmium, and mercury, complying with pharmacopoeia or industry limits. |
| Residue on Ignition (Sulfated Ash) | Gravimetric Method | Treat the sample with sulfuric acid and then incinerate at high temperature, weighing the residual inorganic material to assess the content of inorganic impurities, commonly used for raw material control. |
| pH Value (aqueous suspension) | pH Meter Measurement | Disperse a certain amount of sample in purified water, stir, and let it stand. Measure the pH value of the suspension using a calibrated pH meter to evaluate its acidity or alkalinity. |
| Crystal Form Analysis | X-ray Diffraction (XRD) | Analyze the crystal structure through X-ray powder diffraction patterns to confirm the consistency of the crystal form, used for quality control of polymorphic substances. |
| Test Item | Specification |
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| Appearance | Yellow powder |
| Purity(HPLC) | ≥99.0% |
| Water | ≤2.0% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.