Nsc190757 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 91893-72-0 |
| Product name | Nsc190757 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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) |
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Documents We Provide for Nsc190757
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Nsc190757 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Nsc190757
| Industry | Application | Process |
|---|---|---|
| Biobiochemistry and Molecular Biology | N-terminal sequencing reagent for protein sequencing (Edman degradation reagent) | Used as a coupling reagent in Edman degradation |
| Pharmaceutical R&D | Intermediate or reagent for peptide synthesis and modification | Applied in sulfonation reactions targeting specific functional groups |
| Analytical Chemistry | Derivatization reagent for high-performance liquid chromatography (HPLC) | Reacts with amino-containing compounds to form derivatives |
Manufacturing Quality Control of Nsc190757
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main compound using reversed-phase chromatography with UV detection at characteristic wavelength. |
| Related Substances | HPLC-UV | Detects and quantifies structurally similar impurities by retention time comparison and peak area integration. |
| Residual Solvents | GC-FID | Measures volatile organic solvents (e.g., methanol, acetone) based on flame ionization response after gas chromatographic separation. |
| Water Content | Karl Fischer Titration | Determines water by coulometric or volumetric titration using iodine-sulfur dioxide reaction in anhydrous pyridine-methanol medium. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Quantifies trace heavy metals via mass spectrometric detection of elemental ions after acid digestion and nebulization. |
| Sulfate Impurity | Ion Chromatography | Separates and quantifies sulfate anion using suppressed conductivity detection after anion-exchange column separation. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride anion using suppressed conductivity detection after anion-exchange column separation. |
| pH (1% w/v aqueous solution) | Potentiometric pH Measurement | Measures hydrogen ion activity using calibrated glass electrode in standardized aqueous solution. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by high-temperature incineration followed by weighing of residual solids. |
| Particle Size Distribution | Laser Diffraction | Analyzes particle size distribution by measuring angular variation in intensity of scattered laser light. |
| Bulk Density | USP <616> Method I | Determines mass per unit volume of freely settled powder using standardized cylinder and weight measurement. |
| Microbial Contamination | Membrane Filtration | Detects aerobic microorganisms by filtration, membrane transfer to culture media, and colony enumeration after incubation. |
Technical Specifications of Nsc190757
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 215–220 °C |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=10 ppm |
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 Nsc190757
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Nsc190757
Packaging of Nsc190757
Industrial Nsc190757 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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