2-Amino-4-chloro-5-methylbenzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 88-51-7 |
| Product name | 2-Amino-4-chloro-5-methylbenzenesulfonic 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-Amino-4-chloro-5-methylbenzenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Amino-4-chloro-5-methylbenzenesulfonic 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-4-chloro-5-methylbenzenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Synthesis intermediate for Pigment Red 22 (Brilliant Red) | Prepared by diazotization of 3-chloro-p-toluidine-6-sulfonic acid followed by coupling with β-naphthol. |
| Dye Industry | Synthesis intermediate for Pigment Red 23 (Carmine Red) | Prepared by diazotization followed by coupling with 3-hydroxy-2-naphthanilide. |
| Dye Industry | Intermediate for acid dyes and ice dyes | The aromatic primary amino group undergoes diazotization, followed by coupling with various coupling components. |
Manufacturing Quality Control of 2-Amino-4-chloro-5-methylbenzenesulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reversed-phase HPLC with UV detection at 254 nm, based on external standard calibration. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via iodine-sulfur dioxide reaction in pyridine-methanol solvent. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after high-temperature ashing at 700-800 C. |
| Heavy Metals (as Pb) | AAS | Atomic absorption spectroscopy quantifies total heavy metals after acid digestion and chelation. |
| Chloride Impurity | Potentiometric Titration | Titration with silver nitrate using silver electrode to detect endpoint based on AgCl precipitation potential. |
| Sulfate Impurity | Gravimetric Analysis | Precipitation as BaSO4 followed by filtration, drying, and weighing of the insoluble residue. |
| Organic Impurities (Related Substances) | HPLC-DAD | Separation and detection of structurally related compounds using HPLC with diode array detection. |
| pH of Aqueous Solution | pH Meter Measurement | Direct measurement of pH in a defined aqueous suspension or solution using calibrated glass electrode. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid using capillary tube and controlled heating. |
| Bulk Density | Graduated Cylinder Method | Mass per unit volume measured by tapping a known mass in a standardized cylinder to determine settled density. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to calculate size distribution of dry or dispersed particles. |
| Sulfonic Acid Group Content | Acid-Base Titration | Back-titration of excess standardized NaOH after esterification or direct titration in suitable solvent system. |
Technical Specifications of 2-Amino-4-chloro-5-methylbenzenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Off-white crystalline solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 148–152°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=20 ppm |
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-Amino-4-chloro-5-methylbenzenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Amino-4-chloro-5-methylbenzenesulfonic acid
Safety Information of 2-Amino-4-chloro-5-methylbenzenesulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2-Amino-4-chloro-5-methylbenzenesulfonic acid
Industrial 2-Amino-4-chloro-5-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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