5-Amino-2-methylbenzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 118-88-7 |
| Product name | 5-Amino-2-methylbenzenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeSpecialty 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 5-Amino-2-methylbenzenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 5-Amino-2-methylbenzenesulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 5-Amino-2-methylbenzenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for azo dyes, used in the synthesis of acid, direct, and reactive dyes (e.g., Acid Red 37, Direct Black 38) | Diazotization followed by coupling with coupling components (e.g., H-acid, J-acid) |
| Pharmaceutical Industry | Intermediate for sulfonamide drug synthesis | Preparation of sulfadiazine derivatives via chlorosulfonation and aminolysis |
| Pesticide Industry | Intermediate for certain insecticides and herbicides | Participation in cyclization or condensation reactions to construct heterocyclic structures |
| Organic Synthesis | Building block for functional organic molecules | Introduction of amino and sulfonic acid groups onto aromatic rings for ligand or functional material synthesis |
Manufacturing Quality Control of 5-Amino-2-methylbenzenesulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Quantifies the main component by titration with standardized NaOH solution using an indicator or potentiometric endpoint detection. |
| Moisture Content | Karl Fischer Titration | Determines water content via stoichiometric reaction between water and iodine in a methanol-based reagent. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities by ignition at 750-800 C and weighing the residual ash. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions based on ion exchange and conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitates sulfate as BaSO4 and determines mass after filtration and drying. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures total heavy metal content by atomization and absorption of characteristic wavelength light. |
| Iron Content | UV-Vis Spectrophotometry | Quantifies Fe2+ after complexation with 1,10-phenanthroline, measuring absorbance at ~510 nm. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Determines hydrogen ion activity using calibrated glass electrode in a 1% w/v aqueous suspension. |
| 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) | Separates and quantifies residual solvents or low-boiling organics using flame ionization detection. |
| Color (APHA) | Visual Comparison or Spectrophotometric APHA | Evaluates yellowness intensity by matching against platinum-cobalt standard solutions or calculating APHA index. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of dry powder using angular scattering pattern of laser light. |
Technical Specifications of 5-Amino-2-methylbenzenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Yellow crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 127–131°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 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 5-Amino-2-methylbenzenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 5-Amino-2-methylbenzenesulfonic acid
Safety Information of 5-Amino-2-methylbenzenesulfonic acid
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 5-Amino-2-methylbenzenesulfonic acid
Industrial 5-Amino-2-methylbenzenesulfonic 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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