China Factory Direct
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| CAS number | 121-58-4 |
| Product name | 4-(dimethylamino)benzenesulphonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Dye manufacturing | Used as an intermediate in the synthesis of various azo dyes and other organic pigments |
| Pharmaceutical Industry | Pharmaceutical raw material | Applied in the production of certain pharmaceuticals, including antidepressants |
| Pesticide Industry | Pesticide manufacturing | Used as an intermediate in the synthesis of certain pesticides |
| Photographic Industry | Photographic material manufacturing | Formulated as a component of photosensitive agents |
| Leather Industry | Leather processing | Applied in leather tanning to enhance color and performance properties |
| Printing Ink | Ink manufacturing | Added to inks to improve stability and color vibrancy |
| Detection Item | Common Analytical Method | Method Overview |
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| Assay (Purity) | Acid-Base Titration | Quantifies active compound by titration with standardized NaOH using phenolphthalein indicator. |
| Moisture Content | Karl Fischer Titration | Measures water content via iodometric reaction with Karl Fischer reagent. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by high-temperature incineration and weight measurement. |
| Heavy Metals | ICP-OES | Quantifies trace metal impurities (e.g., Pb, Cd, Hg) by atomic emission spectroscopy after acid digestion. |
| Chloride Impurity | Potentiometric Titration | Detects chloride ions using silver nitrate titration with silver electrode detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitates sulfate as BaSO4 and determines mass after filtration and drying. |
| Related Substances | HPLC-UV | Separates and quantifies structurally related impurities using reversed-phase chromatography and UV detection. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid using calibrated capillary method. |
| Color | Visual Comparison (APHA Scale) | Compares solution color against platinum-cobalt standards in accordance with APHA 10520. |
| Solubility in Water | Qualitative Dissolution Test | Evaluates complete dissolution in specified volume of water at defined temperature and time. |
| pH of Aqueous Solution | pH Meter Measurement | Measures hydrogen ion activity of a standardized aqueous suspension using calibrated pH electrode. |
| Organic Volatile Impurities | GC-FID | Detects residual solvents by gas chromatographic separation followed by flame ionization detection. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 178-182°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Solubility | Freely soluble in water and ethanol |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.