China Factory Direct
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| CAS number | 7575-93-1 |
| Product name | METHYL-D3 P-TOLUENESULFONATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeReagent 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 |
|---|---|---|
| Pharmaceutical Industry | Alkylating agent for synthesizing drug molecules or intermediates | Alkylation reactions in organic synthesis |
| Materials Science | Modifier for preparing functional materials or polymeric compounds | Polymerization or surface treatment of materials |
| Chemical Research | Methylating agent or reactive intermediate in laboratory settings | Organic synthesis reactions at laboratory scale |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detector | Quantitative determination based on peak area comparison against a certified reference standard under validated chromatographic conditions. |
| Related Substances (Impurities) | Gas Chromatography (GC) with FID or Mass Spectrometry (GC-MS) | Separation and identification/quantification of structurally related impurities (e.g., p-toluenesulfonic acid, methanol, unreacted tosyl chloride) using retention time and spectral matching. |
| Residual Solvents (Methanol, Dichloromethane) | Headspace Gas Chromatography (HS-GC) | Volatile solvent quantification via equilibrium partitioning into headspace followed by GC-FID analysis per ICH Q3C guidelines. |
| Water Content | Karl Fischer Titration (Coulometric mode) | Electrochemical titration where iodine is generated in situ to react stoichiometrically with water; measures trace moisture content. |
| Acid Value | Acid-Base Titration (NaOH standard solution, phenolphthalein indicator) | Neutralization of acidic impurities (e.g., residual p-toluenesulfonic acid) with standardized sodium hydroxide; expressed as mg KOH/g. |
| Heavy Metals (Pb, Cd, Hg, As) | Inductively Coupled Plasma–Mass Spectrometry (ICP-MS) | Multi-element detection and quantification at sub-ppq levels after microwave-assisted acid digestion and matrix-matched calibration. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition measurement via controlled heating; indicates purity and identity based on sharpness and agreement with literature value (~65–67 °C). |
| Appearance & Color | Visual Inspection (against white/black background) and Hazen (APHA) Color Scale | Subjective assessment of physical state (crystalline solid) and color intensity relative to platinum-cobalt standards. |
| Residue on Ignition | Gravimetric Analysis (Sulfated Ash Method) | Determination of non-volatile inorganic residue after high-temperature ignition (700–800 °C) and weighing. |
| Chloride Content | Ion Chromatography (IC) with Conductivity Detection | Separation and quantification of chloride ions (from residual tosyl chloride hydrolysis products) using anion-exchange column and suppressed conductivity detection. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation of plane-polarized light; confirms chiral purity (D3-isomer is achiral, so near-zero rotation expected; deviation may indicate contamination or racemization artifacts). |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 78–82°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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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.