China Factory Direct
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| CAS number | 621-12-5 |
| Product name | 1,4-DIPHENYLSEMICARBAZIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty 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 |
|---|---|---|
| Rubber Industry | Vulcanization accelerator | Used as an intermediate in the production of sulfenamide-type vulcanization accelerators for rubber vulcanization systems, enhancing vulcanization efficiency and rubber performance |
| Chemical Synthesis | Organic synthesis intermediate | Employed in the preparation of other nitrogen-containing aromatic compounds; participates in condensation and substitution reactions as a precursor for pharmaceuticals or fine chemicals |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination based on peak area comparison with a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via iodine-sulfur dioxide reaction in a methanol-based solvent system. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after high-temperature ashing at 700-800 C. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification of trace metals by measuring atomic emission intensities following acid digestion and plasma excitation. |
| Chloride Impurity | Potentiometric Titration | Titration with silver nitrate using a silver indicator electrode to detect endpoint based on AgCl precipitation potential shift. |
| Sulfate Impurity | Turbidimetric Method | Quantification via formation of barium sulfate precipitate measured as light scattering intensity in acidic medium. |
| Related Substances | HPLC-DAD | Separation and identification of structurally similar impurities using diode-array detection for spectral confirmation and relative response. |
| Melting Point | Capillary Melting Point Determination | Thermal transition observed visually or automatically as the temperature range at which solid phase converts to liquid. |
| Solubility in Water | Visual Observation/Gravimetric | Qualitative or semi-quantitative assessment of maximum concentration dissolved in distilled water at 25 C with filtration and drying. |
| pH of Aqueous Suspension | pH Meter Measurement | Determination of hydrogen ion activity in a defined suspension (e.g., 1% w/v) using calibrated glass electrode. |
| Organic Volatile Impurities | GC-FID | Separation and quantification of residual solvents using capillary gas chromatography with flame ionization detection. |
| Bulk Density | Tap Density Measurement | Mass per unit volume determined after standardized mechanical tapping of a known mass in a graduated cylinder. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 230-234°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| 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.