China Factory Direct
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| CAS number | 1127-59-9 |
| Product name | 7-METHYL-1H-INDOLE-2,3-DIONE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial 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) |
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 |
|---|---|---|
| Dyes | Intermediate for synthetic indigo dye | Used in oxidative condensation |
| Pharmaceuticals | Precursor compound for antibacterial and antitumor agents | Applied in organic synthesis |
| Pesticides | Active ingredient in insecticides or fungicides | Subject to chemical modification |
| Chemical Research | Organic synthesis intermediate for constructing heterocyclic compounds | Employed in catalytic reactions |
| Materials Science | Functional component in optoelectronic materials or coordination polymers | Utilized in molecular self-assembly |
| Detection Item | Common Analytical Method | Method Overview |
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| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Identity Confirmation | FTIR Spectroscopy | Comparison of sample infrared absorption spectrum with reference spectrum to verify functional group fingerprint. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, indicating crystalline purity and identity. |
| Loss on Drying | Gravimetric Method (105 C, 2 h) | Measurement of mass loss after drying under controlled temperature and time to determine volatile content including moisture and solvents. |
| Residue on Ignition | Sulfated Ash Method | Heating sample to 600-700 C after sulfuric acid treatment to quantify inorganic impurities as sulfate ash. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Atomic absorption spectroscopy quantifies total heavy metal content based on absorbance of ground-state atoms in flame or graphite furnace. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride anions using ion-exchange column and conductivity detection. |
| Sulfate Impurity | ICP-OES | Inductively coupled plasma optical emission spectroscopy measures sulfur emission lines to quantify sulfate contamination. |
| Related Substances | HPLC-DAD | Detection and quantification of structurally similar impurities using HPLC with diode array detection and peak area comparison. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration with iodine-based reagent to specifically determine water content via stoichiometric reaction. |
| Organic Volatile Impurities | GC-FID | Gas chromatography with flame ionization detection identifies and quantifies residual solvents based on retention time and response factor. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity pattern to calculate size distribution of solid particles in suspension. |
| Test Item | Specification |
|---|---|
| Appearance | Red solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 245–249 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=10 ppm |
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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.