2,4-Diaminobenzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 88-63-1 |
| Product name | 2,4-Diaminobenzenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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 2,4-Diaminobenzenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2,4-Diaminobenzenesulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2,4-Diaminobenzenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dyes | Used as a dye intermediate in the synthesis of acid dyes, direct dyes, etc. | Azotization, sulfonation |
| Pharmaceuticals | Used in the synthesis of antimicrobial agents, antimalarial drugs, etc. | Condensation, sulfonation |
| Pesticides | Used as a pesticide intermediate in the synthesis of insecticides, herbicides, etc. | Condensation, sulfonation |
| Chemical Analysis | Used as a colorimetric reagent for detecting metal ions (e.g., iron, copper) | Complexation |
| Rubber | Used as a rubber additive to improve vulcanization performance | Vulcanization |
| Electroplating | Used as an electroplating additive to enhance coating brightness and uniformity | Electrochemical deposition |
Manufacturing Quality Control of 2,4-Diaminobenzenesulfonic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, state, and visible impurities of the sample under natural light or standard illumination. It is usually a white to pale gray crystalline powder. |
| Melting Point | Capillary Melting Point Determination | Determine the melting temperature range using a melting point apparatus. The melting point of 2,4-diaminobenzenesulfonic acid is generally between 280–285 °C (decomposition). |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use reverse-phase HPLC (e.g., C18 column) with a UV detector (around 254 nm), and determine the main component content by external standard method or internal standard method. |
| Non-aqueous Titration | Titrate the amino group in a non-aqueous solvent (e.g., glacial acetic acid) using a standard perchloric acid solution. Suitable for quantitative analysis of amino-containing compounds. | |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Similar to the content determination, HPLC is used to detect and separate possible organic impurities (e.g., isomers, oxidation products), and assess purity. |
| Moisture | Karl Fischer Method | Use Karl Fischer reagent to titrate the moisture content in the sample, suitable for precise determination of trace moisture. |
| Sulfonic Acid Group Content | Acid-Base Titration | Dissolve the sample and titrate the sulfonic acid groups with a standard sodium hydroxide solution to calculate its content. |
| Heavy Metals | Sulfide Colorimetry (Chinese Pharmacopoeia Method) | Under acidic conditions, react with sodium sulfide to form a colored precipitate, and measure the total heavy metals (e.g., lead) by colorimetry, with a limit generally ≤20 ppm. |
| Drying Loss | Thermogravimetric Analysis (Oven Method) | Dry the sample at a specified temperature (e.g., 105 °C) until constant weight, and measure the mass loss to reflect the content of adsorbed water and volatile impurities. |
| Residue on Ignition | Gravimetric Method | Ignite the sample at high temperature and weigh the residual inorganic matter, used to evaluate the content of inorganic impurities. |
Technical Specifications of 2,4-Diaminobenzenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to amber crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 285-288 °C (decomposes) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm (as Pb) |
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 2,4-Diaminobenzenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2,4-Diaminobenzenesulfonic acid
Safety Information of 2,4-Diaminobenzenesulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2,4-Diaminobenzenesulfonic acid
Industrial 2,4-Diaminobenzenesulfonic acid 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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