1-Naphthol-4-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 84-87-7 |
| Product name | 1-Naphthol-4-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeCosmetic GradeFood 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-4-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1-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-Naphthol-4-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Synthesis of azo dyes | Generation of intermediates via sulfonation, nitration, and related reactions |
| Pharmaceutical Industry | Synthesis of pharmaceutical intermediates | Used in the synthesis of anti-inflammatory and antimicrobial agents |
| Fine Fragrance Industry | Synthesis of fragrance compounds | Raw material for synthesizing musk-type fragrances |
| Dyeing Auxiliaries | Production of dye fixatives | Improves dye fixation on fibers |
| Fine Chemicals | Synthesis of other organic compounds | Key raw material for synthesizing naphthalene derivatives |
Manufacturing Quality Control of 1-Naphthol-4-sulfonic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color and condition of the sample under natural light or standard light source to determine if it is a white to pale gray crystalline powder and whether there are any visible impurities. |
| Purity (Main Component Content) | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 chromatographic column with methanol-buffer solution (e.g., phosphate buffer) as the mobile phase, and a UV detector (around 254 nm) for detection. Calculate the purity of the main peak using external standard method or area normalization method. |
| Moisture Content | Karl Fischer Titration | Determine the moisture content by quantitatively reacting water with iodine and sulfur dioxide in the presence of pyridine and methanol, using coulometric or volumetric methods. |
| Sulfonic Acid Group Content | Acid-Base Titration | Dissolve the sample in water and titrate the free sulfonic acid groups with a standard sodium hydroxide solution. Use phenolphthalein or potentiometric methods to indicate the endpoint, then calculate the sulfonic acid group content. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Using the same conditions as for purity testing, identify potential impurity peaks (such as unreacted raw materials, isomers, degradation products) by retention time comparison and perform limit control. |
| Residue on Ignition (Sulfate Ash) | Gravimetric Method (Residue on Ignition) | After high-temperature ignition (about 600–800°C), the residue exists in the form of sulfate. Weigh the residue to calculate the percentage, which reflects the inorganic impurity content. |
| pH Value | pH Meter Measurement | Prepare a certain concentration of sample aqueous solution (e.g., 1% w/v), then directly measure its acidity or alkalinity using a calibrated pH meter. |
| Heavy Metal Content | Atomic Absorption Spectrometry (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, determine the content of heavy metals such as lead, arsenic, cadmium, and mercury. The results should comply with pharmacopoeia or industry limit standards. |
Technical Specifications of 1-Naphthol-4-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 160–164°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| 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 1-Naphthol-4-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 1-Naphthol-4-sulfonic acid
Industrial 1-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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