2,5-Diaminobenzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 88-45-9 |
| Product name | 2,5-Diaminobenzenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeFood GradeCosmetic 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 2,5-Diaminobenzenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2,5-Diaminobenzenesulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2,5-Diaminobenzenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Dye manufacturing | Used as an intermediate in the synthesis of various azo dyes and disperse dyes |
| Pharmaceutical Industry | Pharmaceutical production | Used as an intermediate in the synthesis of certain drugs, including antipyretic-analgesic and anti-inflammatory agents |
| Pesticide Industry | Pesticide formulation | Used as an intermediate in the synthesis of certain herbicides and other pesticide types |
| Photographic Industry | Photographic material manufacturing | Used as a component of photosensitive materials in the preparation of photographic emulsions |
| Food Industry | Food additive production | Used as a raw material in the production of certain food additives |
| Leather Industry | Leather tanning | Used as an intermediate in tanning agents to improve leather quality |
| Cosmetic Industry | Cosmetic ingredient production | Used as an intermediate in the synthesis of certain cosmetic ingredients, such as UV filters and antioxidants |
Manufacturing Quality Control of 2,5-Diaminobenzenesulfonic acid
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Uses reversed-phase columns (e.g., C18), with mobile phases of methanol/water or acetonitrile/water, and UV detection at 254 nm or 230 nm. Peak areas are quantified using external standard or internal standard methods. This method effectively separates and determines the main component content, offering high sensitivity and excellent reproducibility. |
| Content Determination | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Leverages the characteristic absorption peak of 2,5-diaminobenzenesulfonic acid at a specific wavelength (typically 230–250 nm). Sample concentration is calculated via standard curve method. Suitable for rapid screening and routine quality control; simple to operate but susceptible to interference from impurities. |
| Impurity Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | After derivatization (e.g., acetylation or silylation), GC-MS is used for qualitative and quantitative analysis of potential organic impurities. Ideal for precise identification and quantification of volatile or semi-volatile impurities. |
| Structural Confirmation | Nuclear Magnetic Resonance Spectroscopy (NMR) | ¹H NMR and ¹³C NMR provide information on the chemical environment of hydrogen and carbon atoms, respectively. Considered the gold standard for confirming molecular structure, especially useful for newly synthesized compounds or samples of unknown origin. |
| Molecular Weight Determination | Mass Spectrometry (MS, ESI-MS or MALDI-TOF) | Electrospray Ionization Mass Spectrometry (ESI-MS) or Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) accurately determines the molecular ion peak, verifying molecular formula and molecular weight. Commonly used for purity assessment and structural identification. |
| Residual Solvent Testing | Gas Chromatography (GC-FID / GC-MS) | Utilizes headspace injection or direct injection to detect residual organic solvents (e.g., ethanol, acetone, dichloromethane) from synthesis processes. Complies with ICH Q3A guidelines to ensure product safety. |
| Moisture Content Determination | Karl Fischer Titration | Determines water content through a chemical titration reaction. Provides highly accurate results and is suitable for both solid and liquid samples. Recognized as the standard method in pharmacopeias for moisture testing. |
| pH Determination | pH Measurement (Potentiometric Method) | The sample is dissolved in an appropriate solvent (e.g., water or buffer), and pH is measured using a pH meter to assess acidity/basicity within specified limits, reflecting product stability. |
Technical Specifications of 2,5-Diaminobenzenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 285-290 °C (decomposes) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 2,5-Diaminobenzenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2,5-Diaminobenzenesulfonic acid
Safety Information of 2,5-Diaminobenzenesulfonic acid
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 2,5-Diaminobenzenesulfonic acid
Industrial 2,5-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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