1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 118-47-8 |
| Product name | 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone |
| 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 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Azo dye intermediate for synthesizing acid, reactive, and direct dyes | Coupling with aromatic amine diazonium salts to produce azo dyes |
| Pharmaceutical Industry | Key intermediate for the antipyretic and analgesic drug metamizole | Prepared via multi-step reactions including methylation, nitrosation, reduction, and salt formation |
| Analytical Chemistry | Colorimetric reagent for metal ion determination (e.g., cobalt, nickel, copper) | Forms colored complexes with metal ions in a pH-controlled buffer solution for spectrophotometric analysis |
Manufacturing Quality Control of 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
| Detection Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance and Physical Characteristics | Visual Inspection | Observe the sample's color, physical state (e.g., powder, crystalline), presence of caking or visible impurities. Typically should appear as white to off-white powder. |
| Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Compare the sample spectrum with reference standard spectra to confirm consistency in characteristic functional group absorption peaks (e.g., sulfonic acid group, carboxyl group, pyrazolone ring). |
| Proton Nuclear Magnetic Resonance (¹H-NMR) | Measure in deuterated solvent (e.g., DMSO-d6); confirm molecular structure based on chemical shift, integration area, and splitting pattern. | |
| High-Performance Liquid Chromatography-Mass Spectrometry (HPLC-MS) | Perform qualitative identification by comparing retention time and mass-to-charge ratio (m/z) with those of the reference standard. | |
| Purity/Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with UV detection (commonly set at 254 nm or selected based on maximum absorbance); calculate main component content using external standard method or area normalization method. |
| Moisture Content | Karl Fischer Titration | Quantify trace moisture in the sample using Karl Fischer reagent titration; suitable for precise measurement of low-level water content (% w/w). |
| Sulfonic Acid Group Content | Ion Chromatography (IC) or Titration Method | Ion chromatography can quantitatively detect free sulfate ions or bound sulfonic acid groups; alternatively, sulfate is released via alkaline hydrolysis followed by titration. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, determine residual levels of lead, cadmium, mercury, arsenic, etc., ensuring compliance with pharmacopoeial or relevant safety limits. |
| Related Substances (Impurities) | HPLC Method | Use gradient elution program to separate the main peak from impurity peaks; calculate individual and total impurity levels to assess purity and stability. |
| Melting Point | Melting Point Instrument Method | Determine initial and final melting temperatures using an automatic melting point apparatus, useful for auxiliary identification and assessment of crystal purity. |
| Solubility | Solubility Test | Test solubility in common solvents such as water, ethanol, methanol, DMSO, and record solubility behavior. |
| Particle Size Distribution (if applicable) | Laser Particle Size Analysis | For raw materials requiring particle size control (e.g., in formulation development), measure D10, D50, D90, etc., using wet or dry dispersion methods. |
Technical Specifications of 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
| Test Item | Specification |
|---|---|
| Appearance | Pale Yellow Powder |
| Purity | ≥90.0% |
| Insoluble Matter | ≤0.2% |
| Heavy metals | ≤20 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 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
Safety Information of 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone
Industrial 1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone 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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