Oxindole Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 59-48-3 |
| Product name | Oxindole |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeReagent 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 Oxindole
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Oxindole Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Oxindole
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of anti-inflammatory and analgesic drugs | Used as an intermediate in the synthesis of indole derivatives |
| Agrochemicals | Preparation of plant growth regulators | Applied in the synthesis of indole compounds |
| Dyes | Synthesis of dye intermediates | Involved in the synthesis of azo dyes |
| Chemical Research | Laboratory reagent | Employed in organic synthesis reaction studies |
Manufacturing Quality Control of Oxindole
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and presence of visible impurities under natural or standard lighting conditions. |
| Melting Point | Capillary Melting Point Method | Heat the sample using a melting point apparatus to observe the temperature range at which it transitions from solid to liquid, used to assess purity and identify substance characteristics. |
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Employ a reversed-phase column (e.g., C18) with UV detection to quantify the main component and impurities based on retention time and peak area. |
| Structural Confirmation | Nuclear Magnetic Resonance Spectroscopy (NMR) | Use ¹H-NMR and ¹³C-NMR to analyze the compound’s structure, confirming the chemical environments of hydrogen and carbon atoms are consistent with the target molecule. |
| Functional Group Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Analyze characteristic absorption peaks in the infrared region to confirm the presence of functional groups such as carbonyl (C=O), aromatic rings, N-H, etc. |
| Moisture Content | Karl Fischer Titration | Determine water content in the sample using a specific redox reaction; suitable for accurate measurement of trace amounts of water. |
| Residual Solvents | Gas Chromatography (GC) | Detect organic solvents possibly remaining from manufacturing (e.g., methanol, ethanol, acetone, dichloromethane) according to ICH guidelines. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Measure residual levels of heavy metal elements such as lead, arsenic, cadmium, and mercury to ensure compliance with pharmacopoeial or safety standards. |
| Related Substances (Impurities) | HPLC or UPLC | Separate the main peak from impurity peaks using gradient elution to evaluate degradation products or synthetic by-products, and calculate total impurity content. |
| Assay (Content Determination) | HPLC External Standard Method or Volumetric Analysis | Quantify active ingredient using a calibration curve in HPLC; alternatively, use titration if the substance exhibits acidic or basic properties. |
Technical Specifications of Oxindole
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 148–152°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 Oxindole
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Oxindole
Packaging of Oxindole
Industrial Oxindole 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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