China Factory Direct
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| CAS number | 7385-85-5 |
| Product name | 2-Naphthyl p-Toluenesulfonate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial 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 |
|---|---|---|
| Chemical Synthesis | Organic synthesis intermediate | Used to prepare other sulfonate compounds or as an alkylating agent in electrophilic substitution reactions |
| Analytical Chemistry | Derivatization reagent for chromatographic analysis | Used in high-performance liquid chromatography (HPLC) or gas chromatography (GC) to derivatize hydroxyl- or amino-containing compounds, enhancing detection sensitivity |
| Pharmaceutical R&D | Drug synthesis precursor | Employed in the synthesis of biologically active naphthalene derivatives, including anti-inflammatory or antitumor candidate molecules |
| Materials Science | Synthesis of functional materials | Applied in constructing polymer or liquid crystal material precursors containing sulfonate groups |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by comparison of peak area against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Appearance | Visual Inspection | Assessment of physical state and color against established reference samples under controlled lighting conditions. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, following pharmacopeial guidelines (e.g., USP <741>). |
| Loss on Drying | Gravimetric (105 C, 2 h) | Measurement of mass loss after drying under specified temperature and time to determine volatile content including residual solvents and moisture. |
| Residual Solvents | GC-FID | Separation and quantification of common organic solvents (e.g., toluene, acetone) using gas chromatography with flame ionization detection. |
| Heavy Metals | ICP-OES | Multi-element quantification of toxic metals (Pb, Cd, Hg, As) after acid digestion, based on atomic emission intensity at characteristic wavelengths. |
| Chloride Impurity | Ion Chromatography | Separation and conductivity-based detection of chloride ions in aqueous extract following sample dissolution and filtration. |
| Sulfate Impurity | Turbidimetric Method | Formation of barium sulfate precipitate in acidic medium; quantification via measurement of turbidity at 420 nm. |
| Related Substances | HPLC-DAD | Detection and semi-quantitative assessment of structurally related impurities (e.g., p-toluenesulfonic acid, 2-naphthol) using diode array detection. |
| Water Content | Karl Fischer Titration | Coulometric or volumetric titration based on iodine consumption in a reaction specific to water in anhydrous methanol/pyridine medium. |
| Acid Value | Acid-Base Titration | Neutralization of acidic impurities with standardized NaOH solution using phenolphthalein indicator; expressed as mg KOH/g. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity from dispersed particles to calculate volume-based size distribution (D10, D50, D90). |
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 124–128°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 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.