2,6-Naphthalenedisulfonic acid disodium salt Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1655-45-4 |
| Product name | 2,6-Naphthalenedisulfonic acid disodium salt |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Reagent GradeIndustrial GradeSpecialty 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 2,6-Naphthalenedisulfonic acid disodium salt
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2,6-Naphthalenedisulfonic acid disodium salt Supplier from China
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Industrial Applications of 2,6-Naphthalenedisulfonic acid disodium salt
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate in H-acid production | Converted to H-acid (1-amino-8-hydroxy-3,6-naphthalenedisulfonic acid) for azo dye synthesis via nitration, reduction, and hydrolysis of sodium 2,6-naphthalenedisulfonate |
| Organic Synthesis | Naphthalene-based dye intermediate | Used as an aromatic sulfonic acid derivative in coupling or amination reactions to synthesize dyes and pigments with specific molecular structures |
| Chemical Reagents | Analytical reagent | Employed in laboratories as a reference standard or as a sulfonate-type reagent in specific chemical reactions |
Manufacturing Quality Control of 2,6-Naphthalenedisulfonic acid disodium salt
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Place an appropriate amount of sample on a white background and observe under natural light or standard illumination for color, physical state, and presence of impurities; it should be a white or off-white crystalline powder. |
| Identification | Infrared Spectroscopy (IR) | Determine the infrared absorption spectrum of the sample using an infrared spectrometer and compare it with the reference spectrum to confirm the presence of characteristic functional groups (e.g., sulfonic acid groups, aromatic rings). |
| Assay | High-Performance Liquid Chromatography (HPLC) | Use reversed-phase HPLC with a C18 column and a UV detector (typically at 230–254 nm wavelength); quantify 2,6-naphthalenedisulfonic acid sodium by the external standard method. |
| pH Value | pH Meter Method | Prepare an aqueous solution at a specified concentration (e.g., 1% w/v) and measure its pH using a calibrated pH meter; the value should be within the specified range (typically 5.0–8.0). |
| Drying Loss | Thermogravimetric Analysis / Oven Drying Method | Dry the sample at 105°C until constant weight is achieved, then calculate the percentage mass loss to assess moisture and volatile substance content. |
| Residue on Ignition (Sulfated Ash) | High-Temperature Incineration Method | Carbonize the sample, then incinerate it in a furnace at 700–800°C until constant weight is reached; weigh the residual inorganic material to evaluate total inorganic impurities. |
| Heavy Metals | Thioacetamide Method (Colorimetric) or Atomic Absorption Spectroscopy (AAS) | Treat the sample according to pharmacopoeial procedures and determine the total content of heavy metals such as lead, cadmium, mercury, and arsenic by colorimetry or AAS, ensuring compliance with limits (e.g., ≤20 ppm). |
| Chlorides | Silver Nitrate Turbidity Method | Acidify the sample solution, add silver nitrate, and compare the resulting turbidity with that of a standard sodium chloride solution to control chloride ion impurities. |
| Sulfates | Barium Chloride Turbidity Method | In acidic conditions, add barium chloride to form barium sulfate precipitate; compare the turbidity with that of a standard potassium sulfate solution to control sulfate impurities. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use gradient or isocratic HPLC conditions to separate and detect possible isomers (e.g., 2,7-naphthalenedisulfonic acid sodium) and other organic impurities; quantify impurity levels using area normalization or main component self-reference methods. |
Technical Specifications of 2,6-Naphthalenedisulfonic acid disodium salt
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=20 ppm |
| Melting Point | >300 °C (decomposes) |
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 2,6-Naphthalenedisulfonic acid disodium salt
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2,6-Naphthalenedisulfonic acid disodium salt
Safety Information of 2,6-Naphthalenedisulfonic acid disodium salt
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2,6-Naphthalenedisulfonic acid disodium salt
Industrial 2,6-Naphthalenedisulfonic acid disodium salt 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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