1-Amino-2-naphthol-4-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 116-63-2 |
| Product name | 1-Amino-2-naphthol-4-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty 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-Amino-2-naphthol-4-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1-Amino-2-naphthol-4-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-Amino-2-naphthol-4-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Used as a dye intermediate for producing acid dyes, direct dyes, and azo dyes | Reacted via diazotization followed by coupling with other aromatic amines or phenolic compounds to form target dyes |
| Dyeing and Printing Industry | Used in the production of mordant dyes to impart good color fastness to fibers | Processed through sulfonation, nitration, and reduction to synthesize mordant dyes with specific structures |
| Pharmaceutical Industry | Synthesized as an intermediate for certain pharmaceuticals | Participates in condensation or substitution reactions to generate active pharmaceutical ingredients |
| Analytical Chemistry | Used as an analytical reagent in colorimetric reactions or spectrophotometric assays | Leverages the chemical reactivity of its amino and sulfonic acid groups for quantitative or qualitative analysis |
Manufacturing Quality Control of 1-Amino-2-naphthol-4-sulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Quantifies active ingredient by neutralizing sulfonic acid group with standardized NaOH solution. |
| Moisture Content | Karl Fischer Titration | Measures water content via iodometric reaction with coulometric or volumetric reagent. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Determines total heavy metal concentration by atomic absorption of characteristic wavelengths. |
| Sulfated Ash | Gravimetric Analysis | Measures inorganic residue after high-temperature combustion in presence of sulfuric acid. |
| Chloride Impurity | Potentiometric Titration | Detects chloride ions using silver nitrate titrant and silver indicator electrode. |
| Iron Content | UV-Vis Spectrophotometry | Measures Fe2+ complex with 1,10-phenanthroline at ~510 nm absorbance. |
| Related Substances | HPLC with UV Detection | Separates and quantifies structurally similar impurities using reversed-phase chromatography. |
| pH of Aqueous Solution | pH Meter Measurement | Determines acidity/basicity of a defined aqueous suspension or solution. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Identifies and quantifies residual solvents by separation and flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of solid particles in suspension via light scattering pattern analysis. |
| Bulk Density | Gravimetric Volumetric Method | Calculates mass per unit volume of freely settled powder in standardized cylinder. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement | Evaluates yellowness/brownness against platinum-cobalt standard scale. |
Technical Specifications of 1-Amino-2-naphthol-4-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Brown solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 245-249°C (decomposes) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
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-Amino-2-naphthol-4-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1-Amino-2-naphthol-4-sulfonic acid
Safety Information of 1-Amino-2-naphthol-4-sulfonic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 1-Amino-2-naphthol-4-sulfonic acid
Industrial 1-Amino-2-naphthol-4-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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