China Factory Direct
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| CAS number | 13244-33-2 |
| Product name | p-Anisidine-3-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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) |
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 Manufacturing | Used in the production of dye intermediates | Prepared via sulfonation |
| Pharmaceutical Manufacturing | Serves as an intermediate in drug synthesis | Synthesized via substitution reaction |
| Detection Item | Common Analytical Method | Method Overview |
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| Assay (Purity) | Acid-Base Titration | Quantifies active compound by neutralizing sulfonic acid group with standardized NaOH solution. |
| Moisture Content | Karl Fischer Titration | Measures water content via iodine-sulfur dioxide redox reaction in methanol-based solvent. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by high-temperature incineration and weighing of residual mass. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies trace metal impurities by measuring absorption of element-specific UV-Vis light after atomization. |
| Chloride Impurity | Potentiometric Titration | Detects chloride ions using silver nitrate titrant and silver-silver chloride electrode endpoint detection. |
| Sulfate Impurity | Gravimetric Analysis | Precipitates sulfate as barium sulfate and determines mass after filtration and drying. |
| Related Substances | High-Performance Liquid Chromatography (HPLC) | Separates and quantifies structurally related impurities using reversed-phase C18 column and UV detection. |
| Melting Point | Capillary Melting Point Determination | Measures temperature range at which solid transitions to liquid, indicating purity and identity. |
| pH of Aqueous Solution | pH Meter Measurement | Determines acidity/basicity of 1% w/v aqueous suspension using calibrated glass electrode. |
| Iron (Fe) Content | UV-Vis Spectrophotometry | Measures Fe2+ complex with 1,10-phenanthroline at 510 nm after reduction and chelation. |
| Organic Volatile Impurities | Gas Chromatography (GC) | Identifies and quantifies residual solvents using flame ionization detection and capillary column separation. |
| Bulk Density | Graduated Cylinder Method | Determines mass per unit volume of freely settled powder under standardized conditions. |
| Test Item | Specification |
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| Appearance | Gray solid |
| Purity | >=98.0% (HPLC) |
| Total Impurities | <=2.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 185–189 °C |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Identification (NMR) | Consistent with structure |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.