Sodium 2,3-dihydroxynaphthalene-6-sulfonate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 135-53-5 |
| Product name | Sodium 2,3-dihydroxynaphthalene-6-sulfonate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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 Sodium 2,3-dihydroxynaphthalene-6-sulfonate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Sodium 2,3-dihydroxynaphthalene-6-sulfonate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Sodium 2,3-dihydroxynaphthalene-6-sulfonate
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for azo dyes, used in the synthesis of acid, direct, and reactive dyes | Coupling with aromatic diazonium salts to form colored azo compounds |
| Textile Dyeing and Printing | Used as a dye component for dyeing protein fibers such as wool and silk | Dyeing conducted in a weakly acidic medium; sulfonic acid groups enhance water solubility and fiber affinity |
| Organic Synthesis | Precursor for naphthalene-based functional compounds | Derivatized into other naphthalene sulfonic acid derivatives via multi-step reactions including sulfonation, oxidation, and reduction |
Manufacturing Quality Control of Sodium 2,3-dihydroxynaphthalene-6-sulfonate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantifies main compound based on absorbance at characteristic wavelength using calibrated standard curve. |
| Moisture Content | Karl Fischer Titration | Determines water content via stoichiometric reaction between water and Karl Fischer reagent. |
| Residue on Ignition | Gravimetric Analysis | Measures inorganic ash content by high-temperature incineration and weight difference. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions using ion-exchange column and conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitates sulfate as BaSO4 and determines mass after filtration and drying. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals by atomization and absorption of specific wavelength light. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Measures hydrogen ion activity using calibrated pH electrode in 1% w/v aqueous solution. |
| Organic Impurities (Related Substances) | HPLC-UV | Separates and detects structurally related impurities using reversed-phase chromatography and UV detection. |
| Sodium Content | Flame Photometry | Quantifies sodium by measuring intensity of emitted light at characteristic wavelength during flame excitation. |
| Iron Impurity | ICP-OES | Determines trace iron via plasma-induced atomic emission at element-specific wavelengths. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Measures weight loss upon controlled heating to determine volatile content including solvents and hydrates. |
| Bulk Density | USP <616> Tap Density Method | Determines mass per unit volume after standardized tapping of a known powder sample. |
Technical Specifications of Sodium 2,3-dihydroxynaphthalene-6-sulfonate
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Melting Point | 245–250 °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 Sodium 2,3-dihydroxynaphthalene-6-sulfonate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Sodium 2,3-dihydroxynaphthalene-6-sulfonate
Safety Information of Sodium 2,3-dihydroxynaphthalene-6-sulfonate
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of Sodium 2,3-dihydroxynaphthalene-6-sulfonate
Industrial Sodium 2,3-dihydroxynaphthalene-6-sulfonate 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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