2-Aminonaphthalene-1-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 81-16-3 |
| Product name | 2-Aminonaphthalene-1-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 2-Aminonaphthalene-1-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Aminonaphthalene-1-sulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2-Aminonaphthalene-1-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for azo dye synthesis | Used in diazotization and coupling reactions |
| Pharmaceutical Industry | Precursor for synthesis of certain pharmaceuticals | Applied in organic synthesis steps including acylation and sulfonation |
| Analytical Chemistry | Analytical reagent | Employed in spectrophotometric or chromatographic detection |
| Research | Model compound for organic synthesis studies | Utilized in multi-step functional group transformation experiments |
Manufacturing Quality Control of 2-Aminonaphthalene-1-sulfonic acid
| Detection Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and visible impurities under natural light or standard illumination. Suitable for determining whether the product is a white to pale yellow crystalline powder. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Utilizes a reversed-phase C18 column with UV detection (typically around 254 nm), employing water-methanol or buffer solution as mobile phase to quantitatively analyze the main component. Offers high sensitivity and accuracy. |
| Purity / Impurity Analysis | High-Performance Liquid Chromatography (HPLC) | Same as above; identifies and quantifies related substances (e.g., unreacted raw materials, by-products, degradation products) based on retention time, calculating total impurity content. |
| Melting Point | Capillary Melting Point Method | Determine the initial and final melting temperatures using a melting point apparatus, used to assess compound purity and characteristic properties. 2-Naphthylamine-1-sulfonic acid typically exhibits a specific melting range (refer to literature values). |
| Moisture Content | Karl Fischer Titration | Uses a KF titrator to precisely measure moisture content in the sample, suitable for organic compounds containing sulfonic acid groups that are prone to moisture absorption. |
| Sulfonic Acid Group Content | Acid-Base Titration | Dissolve the sample in water and titrate with standardized NaOH solution; calculate sulfonic acid group content based on consumed volume to verify functional group ratio. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After digestion with nitric acid-peroxide mixture, determine residual heavy metals such as lead, arsenic, mercury, and cadmium to ensure compliance with pharmacopoeial or industrial standards. |
| Residue on Ignition | Gravimetric Method | Measure the weight of residue after high-temperature incineration of the sample to assess total inorganic impurities, commonly used for control of active pharmaceutical ingredients or fine chemicals. |
| Related Substances (e.g., 2-Naphthylamine) | HPLC or GC-MS | Focuses on monitoring the residual levels of carcinogenic 2-naphthylamine; HPLC combined with mass spectrometry (LC-MS) enhances qualitative and quantitative accuracy, ensuring safety. |
Technical Specifications of 2-Aminonaphthalene-1-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow or light orange crystalline powder |
| Purity | >=98.0% |
| Total Impurities | <=2.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 173-177°C |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Identification (IR) | Conforms to reference spectrum |
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-Aminonaphthalene-1-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Aminonaphthalene-1-sulfonic acid
Safety Information of 2-Aminonaphthalene-1-sulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2-Aminonaphthalene-1-sulfonic acid
Industrial 2-Aminonaphthalene-1-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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