2-Carboxy-5-nitrobenzenesulfonic acid potassium salt Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5344-48-9 |
| Product name | 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty Grade |
| Packaging | 25L/drum |
| 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 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Azo dye intermediate for synthesizing metal-complex dyes (e.g., red, brown) and reactive dyes | Undergoes diazotization-coupling with aromatic amines (e.g., H-acid, J-acid), followed by sulfonation and neutralization to yield target dyes |
| Organic Synthesis | Functional organic intermediate for introducing sulfonic acid, nitro, and carboxylic acid functional groups | Serves as a multifunctional building block in nucleophilic substitution, reduction, and amidation reactions to synthesize pharmaceuticals, agrochemicals, and functional material precursors |
Manufacturing Quality Control of 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection Method | Take an appropriate amount of sample and place it on a white background. Observe its color, state, and presence of foreign matter under natural light or standard illumination. It should be a white to pale white crystalline powder. |
| Identification | Infrared Spectroscopy (IR) Ultraviolet-Visible Spectrophotometry (UV-Vis) |
Compare the characteristic absorption peaks of the sample with those of the reference substance (such as sulfonic acid group, nitro group, carboxyl group, etc.) using infrared spectroscopy; or determine the maximum absorption peak at a specific wavelength (e.g., approximately 260–280 nm) to confirm structural characteristics. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column, with an appropriate ratio of water-organic solvent (e.g., methanol or acetonitrile) as the mobile phase, often with buffer salts to adjust pH. The main component content is determined by external standard method or area normalization method, typically requiring a purity of ≥98.0%. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Drying at Constant Temperature | Dry the sample at 105°C until constant weight, and calculate the percentage of mass loss to assess moisture and volatile impurities content, generally limited to ≤1.0%. |
| Residue on Ignition (Sulfate Ash) | High-Temperature Incineration Method | Carbohydrate the sample and then incinerate it at 700–800°C in a high-temperature furnace until constant weight. Weigh the residual inorganic material to evaluate the total inorganic impurities, usually limited to ≤0.1%. |
| pH Value | pH Meter Measurement Method | Prepare a solution of a certain concentration (e.g., 1% w/v) and measure its pH value using a calibrated pH meter to reflect acidity or alkalinity, generally within the range of 4.0–6.0. |
| Heavy Metals | Sodium Sulfide Method (Colorimetry) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample preparation according to pharmacopoeia methods, compare the color depth with a standard lead solution (sodium sulfide method), or use ICP-MS to accurately determine the residues of elements such as lead, cadmium, mercury, and arsenic. The total heavy metal limit is usually ≤20 ppm. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Separate and detect possible synthetic by-products or degradation impurities (such as unreacted raw materials, de-nitration products, etc.) using gradient elution or isocratic elution conditions. Each individual impurity is usually ≤0.5%, and the total impurities are ≤1.0%. |
Technical Specifications of 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 245-250°C (decomposes) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.3% |
| 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 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
Safety Information of 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt
Industrial 2-Carboxy-5-nitrobenzenesulfonic acid potassium salt 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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