2-Amino-1,4-benzenedisulfonic acid Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 98-44-2 |
| Product name | 2-Amino-1,4-benzenedisulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for 2-Amino-1,4-benzenedisulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Amino-1,4-benzenedisulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2-Amino-1,4-benzenedisulfonic acid
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Dye intermediates | Synthesis of aromatic compounds |
| Pharmaceutical Industry | Intermediates for drug synthesis | Chemical structure modification and coupling reactions |
| Dyeing and Printing Industry | Production of acid dyes | Sulfonation and amination reactions |
| Analytical Reagents | Preparation of pH indicators | Chemical synthesis and purification processes |
Manufacturing Quality Control of 2-Amino-1,4-benzenedisulfonic acid
| Milestone | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance and Physical Properties | Visual Inspection | Observe the color, state, and whether the sample is clumped under natural light or standard illumination to determine if it meets specifications (typically a white to light gray crystalline powder). |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with an ion-pair reagent (e.g., sodium octanesulfonate) and buffer solution (e.g., phosphate buffer) as the mobile phase, detected by UV detector (wavelength approximately 254 nm), and quantify the main component using external standard or internal standard method. |
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Same as above, calculate total impurity content by peak area normalization or impurity correction factor to evaluate sample purity. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Optimize gradient elution program to separate possible synthetic intermediates, by-products, or degradation products (e.g., unreacted raw materials, oxidation products), and perform qualitative and semi-quantitative analysis using a UV detector. |
| Moisture Content | Karl Fischer Titration | Quantitatively determine the moisture content in the sample using Karl Fischer reagent, suitable for precise determination of trace water in compounds containing sulfonic acid groups. |
| Sulfonic Acid Group Content | Acid-Base Titration | Dissolve the sample in water or appropriate solvent, then titrate with standard sodium hydroxide solution. Calculate the total acidity based on the volume consumed to indirectly reflect the sulfonic acid group content (requires conversion based on molecular structure). |
| Melting Point | Capillary Melting Point Method | Determine the initial and final melting temperatures using a melting point apparatus under heating conditions, used for identification and preliminary assessment of purity (this compound typically has a specific melting range). |
| Heavy Metals | Sulfide Colorimetry (e.g., Chinese Pharmacopoeia Method) | After wet digestion, react the sample with sodium sulfide under acidic conditions to form a colored sulfide precipitate, and measure the total heavy metals (e.g., lead, iron) by colorimetry. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Oven Method | Dry the sample at a specified temperature (e.g., 105°C) for a certain period, and calculate the percentage loss in weight to reflect volatile impurities and residual solvents. |
| Residue on Ignition (Sulfate Ash) | Weight Method | Ignite the sample at high temperature until constant weight, and weigh the residue, which represents inorganic impurities (mainly sulfates), and calculate the percentage of residue. |
Technical Specifications of 2-Amino-1,4-benzenedisulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | ≥80.0% |
| Free salt | ≤10.0% |
| Total impurities | ≤0.05% |
| Water | ≤9.0% |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of 2-Amino-1,4-benzenedisulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Safety Information of 2-Amino-1,4-benzenedisulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2-Amino-1,4-benzenedisulfonic acid
Industrial 2-Amino-1,4-benzenedisulfonic 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply