P-Toluenesulfonic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 4124-41-8 |
| Product name | P-Toluenesulfonic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial 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 P-Toluenesulfonic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk P-Toluenesulfonic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of P-Toluenesulfonic anhydride
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Used as a sulfonylation reagent in the synthesis of pharmaceutical intermediates or active pharmaceutical ingredients (APIs), including antibiotics, antivirals, and cardiovascular drugs | Introduces sulfonic acid groups in organic synthesis, commonly applied in protecting group chemistry or sulfonamide structure incorporation |
| Agrochemicals | Serves as a precursor or intermediate in the production of herbicides, fungicides, and other agrochemicals | Modifies molecular structure via sulfonylation to enhance biological activity or alter physicochemical properties |
| Dyes & Pigments | Used to synthesize sulfonic acid–based dyes or pigments, improving water solubility and dyeing performance | Acts as a sulfonating agent in the molecular construction of azo or anthraquinone dyes |
| Polymers & Advanced Materials | Employed in the preparation of ion exchange resins, polysulfonamides, and other polymeric compounds | Functions as a crosslinking or functionalization agent to introduce sulfonic acid groups, thereby tuning hydrophilicity or ionic conductivity |
| Electroplating | Applied as an electroplating additive to regulate bath pH or improve metal deposition quality | Acts as a buffer or auxiliary conductive medium in electrolyte solutions |
Manufacturing Quality Control of P-Toluenesulfonic anhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Hydrolysis of the anhydride to toluenesulfonic acid followed by titration with standardized NaOH solution. |
| Moisture Content | Karl Fischer Titration | Quantitative reaction of water with iodine and sulfur dioxide in a methanol-based reagent, measured electrometrically. |
| Appearance | Visual Inspection | Assessment of physical state and color against standard reference under controlled lighting conditions. |
| Melting Point | Capillary Melting Point Determination | Heating of a capillary-packed sample at controlled rate and recording temperature range of phase transition. |
| Residue on Ignition | Gravimetric Analysis | Ignition of sample at 700-800 C to decompose organic matter, followed by weighing of inorganic residue. |
| Heavy Metals | ICP-OES | Digestion of sample followed by multi-element quantification via atomic emission spectroscopy in plasma. |
| Chloride Impurity | Ion Chromatography | Separation of chloride ions on anion-exchange column with conductivity detection. |
| Sulfuric Acid Impurity | Acid-Base Titration | Direct titration of residual H2SO4 with standardized NaOH using potentiometric endpoint detection. |
| Related Substances | HPLC-UV | Separation of impurities on reversed-phase column with UV detection at 254 nm and comparison to reference standards. |
| Organic Volatile Impurities | GC-FID | Headspace or direct injection analysis with flame ionization detection for residual solvents or decomposition products. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity patterns to determine size distribution of solid particles in suspension. |
| Bulk Density | Gravimetric Volumetric Method | Mass of material freely poured into a calibrated cylinder divided by its volume. |
Technical Specifications of P-Toluenesulfonic anhydride
| Test Item | Specification |
|---|---|
| Appearance | Off-white crystalline solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 139–143°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic sulfonic anhydride odor |
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 P-Toluenesulfonic anhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of P-Toluenesulfonic anhydride
Packaging of P-Toluenesulfonic anhydride
Industrial P-Toluenesulfonic anhydride 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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