4-Aminotoluene-3-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 88-44-8 |
| Product name | 4-Aminotoluene-3-sulfonic 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 4-Aminotoluene-3-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4-Aminotoluene-3-sulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4-Aminotoluene-3-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for azo dyes, used in the synthesis of acid, direct, and reactive dyes (e.g., Acid Red G, Direct Black G) | Diazotization followed by coupling with coupling components (e.g., H-acid, J-acid) |
| Pharmaceutical Industry | Intermediate for sulfonamide drug synthesis | Preparation of sulfonamide derivatives via chlorosulfonation and aminolysis |
| Pesticide Industry | Intermediate for certain insecticides and herbicides | Participation in cyclization or condensation reactions to construct active ingredients containing sulfonamide moieties |
| Organic Synthesis | Functionalized aromatic building block for preparing sulfonamide compounds | Introduction of sulfonamide groups via sulfonyl chloride formation and amidation |
Manufacturing Quality Control of 4-Aminotoluene-3-sulfonic acid
| Detection Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color and physical state (e.g., white or off-white crystalline powder) with the naked eye to determine compliance with standard requirements. |
| Identification | Infrared Spectroscopy (IR) | Determine the infrared absorption spectrum of the sample and compare it with the reference spectrum to confirm the presence of characteristic functional groups (e.g., sulfonic acid group, amino group, aromatic ring). |
| Thin Layer Chromatography (TLC) | Perform thin-layer development using an appropriate developing system; compare the Rf values and staining behavior of the sample with those of the reference substance for preliminary identification. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Separate the analyte using a reversed-phase C18 column with a suitable mobile phase (e.g., methanol-water or acetonitrile-buffer salt system), followed by UV detection for quantification. |
| Acid-Base Titration | Utilize the acidic (sulfonic acid group) or basic (amino group) properties of the compound by titrating with a standardized acid or base solution to calculate the main component content. | |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use gradient or isocratic elution programs to separate and detect potential impurities such as synthetic by-products or degradation products. Quantification is typically performed using area normalization or external standard methods. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Constant-Pressure Drying Method | Dry the sample at a specified temperature (e.g., 105°C) until constant weight is achieved, then calculate the percentage of mass loss to assess moisture and volatile substance content. |
| Residue on Ignition (Sulfated Ash) | High-Temperature Incineration Method | Ignite the sample at high temperature (typically 700–800°C), then weigh the residual inorganic matter to control inorganic impurities. |
| pH Value | pH Meter Measurement | Prepare a solution at a defined concentration (e.g., 1% aqueous solution), and measure its acidity or alkalinity using a calibrated pH meter to reflect the degree of ionization of the sulfonic acid group. |
| Melting Point | Capillary Melting Point Method | Determine the melting temperature range using a melting point apparatus as a supplementary indicator for purity and identity confirmation. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, determine the content of heavy metals such as lead, arsenic, cadmium, and mercury to ensure compliance with pharmacopoeial or industry limits. |
Technical Specifications of 4-Aminotoluene-3-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to light red or green crystalline powder |
| Purity | >=98.0% |
| Melting Point | 147°C to 151°C |
| 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 4-Aminotoluene-3-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4-Aminotoluene-3-sulfonic acid
Safety Information of 4-Aminotoluene-3-sulfonic acid
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 4-Aminotoluene-3-sulfonic acid
Industrial 4-Aminotoluene-3-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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