4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 88-76-6 |
| Product name | 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 88-76-6
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 88-76-6 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 88-76-6
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Azo dye intermediate | Used in the synthesis of acidic azo dyes via diazotization followed by coupling with aromatic amines to form colored compounds |
| Analytical Chemistry | Colorimetric reagent | Applied in colorimetric analysis for quantifying metal ions (e.g., iron, copper) by forming colored complexes |
| Pharmaceutical Industry | Drug synthesis intermediate | Employed in the synthesis pathways of certain antipyretic-analgesic or anti-inflammatory drugs as a pyrazolone derivative building block |
Manufacturing Quality Control of 88-76-6
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reversed-phase HPLC with UV detection at ~254 nm, based on peak area comparison against a certified reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via iodine–sulfur dioxide reaction in anhydrous methanol-based solvent. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Measurement of non-volatile inorganic impurities by weighing residue after controlled high-temperature ashing (750–800 °C). |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification of trace metals (e.g., Pb, Cd, Hg, As) following acid digestion and plasma excitation with elemental emission line detection. |
| Chloride Impurity | Potentiometric Titration with AgNO₃ | Direct titration using silver nitrate solution; endpoint detected by silver ion-selective electrode responding to free Cl⁻ concentration. |
| Sulfonic Acid Group Content | Acid-Base Titration (Back-Titration) | Neutralization of sulfonic acid groups with standardized NaOH, followed by back-titration with HCl using phenolphthalein or potentiometric endpoint. |
| Organic Impurities (Related Substances) | HPLC-DAD | Identification and quantification of structurally related impurities (e.g., unreacted intermediates, isomers, degradants) using diode-array detection and retention time matching. |
| Melting Point | Capillary Melting Point Determination | Thermal transition analysis via calibrated capillary apparatus observing onset and clear point of solid-to-liquid phase change under controlled heating rate. |
| Solubility Profile in Water | Visual Endpoint Method | Qualitative assessment of solubility at 20 °C in distilled water with defined agitation and observation of complete dissolution within specified time. |
| pH of Aqueous Suspension (1% w/v) | pH Potentiometry | Measurement of hydrogen ion activity in a saturated aqueous suspension using calibrated glass electrode pH meter under standardized conditions. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder dispersion via light scattering pattern to determine volume-based particle size distribution (D10, D50, D90). |
Technical Specifications of 88-76-6
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 162-166°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Residue on Ignition | <=0.1% |
| 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 88-76-6
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 88-76-6
Industrial 88-76-6 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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