1-Naphthylamine-7-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 119-28-8 |
| Product name | 1-Naphthylamine-7-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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-Naphthylamine-7-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1-Naphthylamine-7-sulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1-Naphthylamine-7-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for azo dyes | Used in diazotization reactions to produce various azo dyes for dyeing wool, silk, and leather. |
| Dye Industry | Production of acid dyes | Serves as a key raw material for synthesizing acid dyes (e.g., Acid Red, Acid Orange series), imparting specific hue and fastness properties. |
| Pigment Industry | Intermediate for organic pigments | Applied in the synthesis of azo pigments for coloring inks, paints, and plastics. |
| Chemical Reagents | Analytical reagent | Employed in chemical analysis as a component for detecting specific metal ions (e.g., nitrite) or in chromatographic analysis. |
| Fine Chemicals | Building block for compound synthesis | Utilized as a bifunctional building block—leveraging its amino and sulfonic acid groups—for further functionalization to produce specialty chemicals or pharmaceutical intermediates. |
Manufacturing Quality Control of 1-Naphthylamine-7-sulfonic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color and physical state of the sample. Pure substance is usually a white to pale pink crystalline powder with no visible impurities. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Using a reversed-phase C18 column, UV detector (e.g., 254 nm), with water-methanol or buffer solution as the mobile phase, quantitatively analyze the main component content, which has high sensitivity and accuracy. |
| Purity (Related Substances) | High-Performance Liquid Chromatography (HPLC) | Same as above, by peak area normalization or external standard method to evaluate impurity peaks, calculate total impurity content, and assess sample purity. |
| Melting Point | Melting Point Determination (Capillary Method) | Determine the melting temperature range using a melting point apparatus. 1-Naphthol-7-sulfonic acid typically has a specific melting point (literature value >300°C decomposition), used for identification and preliminary purity assessment. |
| Water Content | Karl Fischer Titration (Karl Fischer) | Use KF titration to accurately determine the moisture content in the sample, suitable for compounds containing sulfonic acid groups, avoiding the decomposition interference from heating loss methods. |
| Sulfonic Acid Group Content | Acid-Base Titration | Titrate the sulfonic acid group with a standard alkaline solution in non-aqueous solvent (e.g., ethanol), calculate its content to verify structural characteristics. |
| Heavy Metals | Atomic Absorption Spectrometry (AAS) or ICP-MS | Digest the sample and determine the residual heavy metals such as lead, mercury, cadmium, and arsenic to ensure they meet pharmacopoeia or industrial standards. |
| Chlorides/Sulfates | Ion Chromatography (IC) or Turbidimetry | Ion chromatography can accurately determine inorganic anion impurities; turbidimetry is used for rapid screening of chloride or sulfate residues. |
| Residual Solvents | Gas Chromatography (GC) | If organic solvents (such as ethanol, methanol) are used during production, use headspace GC to detect the residual solvent content. |
| Ignition Residue (Sulfate Ash) | Gravimetric Method | After high-temperature ignition, weigh the residue to assess the total amount of inorganic impurities, especially suitable for sulfonic acid compounds. |
Technical Specifications of 1-Naphthylamine-7-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Light yellow to brown crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 175–179 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 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 1-Naphthylamine-7-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1-Naphthylamine-7-sulfonic acid
Safety Information of 1-Naphthylamine-7-sulfonic acid
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 1-Naphthylamine-7-sulfonic acid
Industrial 1-Naphthylamine-7-sulfonic 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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