1-Naphthol-3,6-disulfonic acid disodium salt Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 20349-39-7 |
| Product name | 1-Naphthol-3,6-disulfonic acid disodium salt |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeElectronic GradeMaterial GradeReagent 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 1-Naphthol-3,6-disulfonic acid disodium salt
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1-Naphthol-3,6-disulfonic acid disodium salt Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1-Naphthol-3,6-disulfonic acid disodium salt
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Production of acid dyes and direct dyes | Sulfonation, coupling reaction |
| Pigment Industry | Synthesis of organic pigments | Chemical synthesis, diazotization reaction |
| Pharmaceutical Intermediates | Used in drug synthesis | Sulfonation, esterification, or other functional group modifications |
| Analytical Chemistry | Used as chemical reagents or indicators | Complexation reaction, colorimetric reaction |
| Optoelectronic Materials | Production of fluorescent whitening agents or optical materials | Sulfonation, condensation reaction |
Manufacturing Quality Control of 1-Naphthol-3,6-disulfonic acid disodium salt
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantitative determination based on absorbance at characteristic wavelength using a calibrated standard curve. |
| Moisture Content | Karl Fischer Titration | Volumetric or coulometric titration measuring water content via iodine-sulfur dioxide reaction in anhydrous methanol. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Determination of hydrogen ion activity using a calibrated glass electrode and reference electrode. |
| Sodium Content | Flame Photometry | Quantification of sodium ions by measuring intensity of emitted light at 589 nm upon atomization in flame. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measurement of absorption of specific wavelength light by ground-state metal atoms in acetylene-air flame. |
| Sulfate Impurity | Gravimetric Analysis | Precipitation of sulfate as barium sulfate followed by drying and weighing of the precipitate. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Titration using silver nitrate with silver indicator electrode to detect endpoint of AgCl precipitation. |
| Residue on Ignition | Gravimetric Analysis | Weighing of non-volatile residue remaining after high-temperature incineration at 700-800 C. |
| Organic Impurities (Related Substances) | HPLC-UV | Separation and quantification of structurally related compounds using reversed-phase chromatography and UV detection. |
| Color (APHA) | Visual Comparison or Spectrophotometric Method | Comparison of sample solution color against platinum-cobalt standard solutions or measurement of yellowness index. |
| Water Insolubles | Filtration and Gravimetry | Filtration of aqueous solution, drying of retained residue, and gravimetric determination. |
| Bulk Density | Graduated Cylinder Method | Mass of material per unit volume measured by pouring into a calibrated cylinder and tapping to settle. |
Technical Specifications of 1-Naphthol-3,6-disulfonic acid disodium salt
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.2% |
| Single Impurity | <=0.3% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Solubility | Freely soluble in water; practically insoluble in ethanol and ether |
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 1-Naphthol-3,6-disulfonic acid disodium salt
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 1-Naphthol-3,6-disulfonic acid disodium salt
Industrial 1-Naphthol-3,6-disulfonic 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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