2-Aminotoluene-5-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 98-33-9 |
| Product name | 2-Aminotoluene-5-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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-Aminotoluene-5-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Aminotoluene-5-sulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2-Aminotoluene-5-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dyes | Used as a diazo component in the production of acid dyes | Coupling reaction |
| Dyes | Used in the manufacture of reactive dyes | Coupling reaction |
| Dyes | Used in the manufacture of direct dyes | Coupling reaction |
| Dyes | Used to produce dye intermediates such as C.I. Acid Red 52 | Diazotization and coupling |
| Chemical Intermediates | Used to synthesize other fine chemicals | Organic synthesis |
| Pharmaceuticals | Intermediate for azo dye-based pharmaceuticals | Chemical synthesis |
Manufacturing Quality Control of 2-Aminotoluene-5-sulfonic acid
| Test Item | Common Test Methods | Method Summary |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, physical state, and presence of visible impurities with the naked eye; typically should appear as white to off-white crystalline powder. |
| Identification | Infrared Spectrophotometry (IR) | Obtain the IR spectrum of the sample and compare it with the reference spectrum to confirm the consistency of characteristic absorption peaks for structural identification. |
| Identification | HPLC Retention Time Comparison | Under specified chromatographic conditions, compare the retention time of the sample with that of the reference standard to assist in identification. |
| Assay | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with an appropriate mobile phase (e.g., methanol-water or acetonitrile-buffer salt system) under isocratic or gradient elution. Detect using a UV detector (typically at 254 nm) and quantify using the external standard method to determine the main component content. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use similar or optimized chromatographic conditions as in the assay to separate and detect possible process impurities and degradation products. Calculate individual impurity contents using the area normalization method or self-reference method. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Constant Weight Drying under Normal Pressure | Dry the sample at a specified temperature (e.g., 105°C) until constant weight is achieved. Calculate the percentage of mass loss to evaluate moisture and volatile content. |
| Residue on Ignition | High-Temperature Incineration Method | After carbonization, incinerate the sample in a high-temperature furnace at 700–800°C until constant weight. Weigh the residual ash to control the total amount of inorganic impurities. |
| pH Value | pH Meter Method | Prepare an aqueous solution of a certain concentration (e.g., 1% w/v), and measure its pH using a calibrated pH meter to reflect acidity/basicity and possible ionic impurities. |
| Melting Point | Capillary Melting Point Determination | Determine the melting temperature range using a melting point apparatus or Thiele tube method. Compare with the standard value (approximately 138–142°C) to assess purity. |
| Heavy Metals | Thioacetamide Colorimetric Method or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Process the sample according to pharmacopoeia methods. Detect total or individual heavy metals (e.g., lead, arsenic, cadmium, mercury) either by color reaction or high-sensitivity instrumentation. |
Technical Specifications of 2-Aminotoluene-5-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to gray to brown crystalline powder |
| Purity | >=98.0% |
| Total Impurities | <=2.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 140–145°C |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=20 ppm |
| Identification (IR) | Conforms to reference spectrum |
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-Aminotoluene-5-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Aminotoluene-5-sulfonic acid
Safety Information of 2-Aminotoluene-5-sulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2-Aminotoluene-5-sulfonic acid
Industrial 2-Aminotoluene-5-sulfonic 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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