P-TOLUENESULFINIC ACID Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 536-57-2 |
| Product name | P-TOLUENESULFINIC ACID |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeMaterial 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for P-TOLUENESULFINIC ACID
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk P-TOLUENESULFINIC ACID Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of P-TOLUENESULFINIC ACID
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Key intermediate in the synthesis of antifungal agents (e.g., terbinafine) | Undergoes alkylation with haloalkanes, followed by oxidation or coupling to construct the allylamine structure |
| Agrochemicals | Precursor for high-efficacy insecticides (e.g., imidacloprid derivatives) | Participates in sulfinic salt condensation reactions to introduce sulfur-containing side chains, enhancing target binding activity |
| Dyes | Modifier for auxochromes and positioning groups in azo and reactive dyes | Serves as a substituent on diazo components to improve dye lightfastness and fiber affinity |
| Organic Synthesis | Precursor to chiral sulfoxides (e.g., esomeprazole) | Converted to optically pure sulfoxides via asymmetric oxidation for proton pump inhibitor synthesis |
| Rubber Additives | Raw material for insoluble sulfur stabilizers | Heated with elemental sulfur to form polysulfide complexes that retard sulfur migration and blooming in rubber compounds |
Manufacturing Quality Control of P-TOLUENESULFINIC ACID
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (p-Toluenesulfinic Acid Content) | Acid-Base Titration with NaOH | Direct titration of acidic protons using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Moisture Content | Karl Fischer Titration | Quantitative determination of water based on iodine-sulfur dioxide reaction in pyridine-methanol medium. |
| Residual Solvents (e.g., Ethanol, Acetone) | Gas Chromatography (GC) with FID | Separation and quantification of volatile organic solvents using capillary column and flame ionization detection. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Multi-element detection after acid digestion by measuring atomic emission intensities at characteristic wavelengths. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride ions using anion-exchange column and conductivity detection. |
| Sulfate Impurity | Gravimetric Analysis | Precipitation of sulfate as barium sulfate followed by filtration, drying, and weighing. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Determination of hydrogen ion activity using calibrated glass electrode and reference electrode. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed visually as solid-to-liquid phase change under controlled heating rate. |
| Organic Impurities (Related Substances) | HPLC with UV Detection | Separation on reversed-phase column and detection at 254 nm to identify and quantify structurally related compounds. |
| Appearance (Color and Clarity) | Visual Inspection against Standard Solutions | Comparison of sample solution in specified solvent with platinum-cobalt color standards and visual assessment of clarity. |
| Iron (Fe) Content | Atomic Absorption Spectroscopy (AAS) | Quantification of iron after acid digestion by measuring absorption of specific atomic resonance line at 248.3 nm. |
| Loss on Drying (LOD) | Gravimetric Thermal Method | Mass loss measured after drying sample at 105 C for 2 hours under controlled atmospheric conditions. |
Technical Specifications of P-TOLUENESULFINIC ACID
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.0% |
| Melting Point | 75–79°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
|
|
Download COA of P-TOLUENESULFINIC ACID
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of P-TOLUENESULFINIC ACID
Packaging of P-TOLUENESULFINIC ACID
Industrial P-TOLUENESULFINIC 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply