3,4-Diaminobenzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 7474-78-4 |
| Product name | 3,4-Diaminobenzenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty 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 3,4-Diaminobenzenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,4-Diaminobenzenesulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,4-Diaminobenzenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for azo dyes and reactive dyes | Synthesized into dye molecules via diazotization, coupling, and related reactions |
| Pharmaceutical Industry | Intermediate for certain sulfonamide drugs or diagnostic reagents | Active pharmaceutical ingredients prepared through organic synthesis steps such as acylation and condensation |
| Analytical Chemistry | Colorimetric reagent or fluorescent probe precursor | Reacted with metal ions or biomolecules to generate colored or fluorescent products for detection |
| Polymer Materials | Monomer for sulfonic acid-containing functional polymers | Sulfonic acid groups introduced via polymerization or grafting to enhance hydrophilicity or ion-exchange capacity |
Manufacturing Quality Control of 3,4-Diaminobenzenesulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Quantifies main component by titration with standardized HCl using methyl orange indicator. |
| Moisture Content | Karl Fischer Titration | Measures water content via coulometric or volumetric reaction between water and Karl Fischer reagent. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by high-temperature incineration followed by weighing of residue. |
| Heavy Metals (as Pb) | Colorimetric Limit Test | Compares sample color after reaction with thioacetamide to standard lead solution under controlled pH. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitates sulfate as BaSO4 and determines mass after filtration and drying. |
| Related Substances | HPLC-UV | Separates and quantifies impurities using reversed-phase HPLC with UV detection at 254 nm. |
| Iron (Fe) Content | Atomic Absorption Spectroscopy (AAS) | Measures iron concentration by absorption of specific wavelength light by ground-state Fe atoms in flame. |
| pH of Aqueous Solution | Potentiometric Method | Determines acidity/basicity of 1% w/v aqueous suspension using calibrated pH electrode. |
| Melting Point | Capillary Melting Point Apparatus | Identifies purity and identity by observing temperature range at which solid transitions to liquid. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Detects and quantifies residual solvents using capillary column and flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of dry powder by analyzing angular scattering pattern of laser beam. |
Technical Specifications of 3,4-Diaminobenzenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 245–249 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| 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 3,4-Diaminobenzenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,4-Diaminobenzenesulfonic acid
Safety Information of 3,4-Diaminobenzenesulfonic acid
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 3,4-Diaminobenzenesulfonic acid
Industrial 3,4-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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