2-Naphthylamine-5,7-disulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 118-33-2 |
| Product name | 2-Naphthylamine-5,7-disulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeMaterial 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) |
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Documents We Provide for 2-Naphthylamine-5,7-disulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Naphthylamine-5,7-disulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2-Naphthylamine-5,7-disulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Production of disperse dyes | Condensation reaction with acid dyes |
| Dye Industry | Production of vat dyes | Oxidation and reduction treatment |
| Pesticide Industry | Synthesis of pesticide intermediates | Substitution and condensation reactions |
| Coatings Industry | Production of anticorrosive and antifouling coatings | Polymerization and substitution reactions |
Manufacturing Quality Control of 2-Naphthylamine-5,7-disulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reversed-phase HPLC with UV detection at 254 nm, based on peak area comparison against certified reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via iodine-sulfur dioxide reaction in methanol-based solvent. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 700-800 C to combust organic matter, then weighing inorganic residue as percentage of original mass. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Atomic absorption spectroscopy measuring absorbance of ground-state metal atoms in flame or graphite furnace atomizer. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Titration using silver nitrate with silver electrode detection of endpoint via potential change at chloride equivalence point. |
| Sulfate Impurity | Gravimetric Analysis (BaSO4 precipitation) | Precipitation of sulfate as barium sulfate followed by filtration, drying, and weighing of precipitate. |
| pH of Aqueous Solution | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in 1% w/v aqueous solution using calibrated glass electrode. |
| Organic Impurities (Related Substances) | HPLC-DAD | Separation and detection of structurally related compounds using HPLC with diode array detector for spectral confirmation. |
| Iron Content | Colorimetric Method (1,10-Phenanthroline) | Formation of orange-red Fe(II)-phenanthroline complex measured spectrophotometrically at 510 nm. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Drying | Mass loss measured after drying at 105 C for 2 hours under atmospheric pressure. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to determine volume-based particle size distribution in dispersed aqueous slurry. |
| Bulk Density | Graduated Cylinder Method | Mass of freely poured sample divided by its unsettled volume in a standardized cylinder. |
Technical Specifications of 2-Naphthylamine-5,7-disulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 245–250 °C (decomposes) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=20 ppm |
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-Naphthylamine-5,7-disulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Naphthylamine-5,7-disulfonic acid
Safety Information of 2-Naphthylamine-5,7-disulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2-Naphthylamine-5,7-disulfonic acid
Industrial 2-Naphthylamine-5,7-disulfonic acid 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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