Naphthol AS Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 92-77-3 |
| Product name | Naphthol AS |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for Naphthol AS
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Naphthol AS Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Naphthol AS
| Industry | Application | Process |
|---|---|---|
| Dyeing and Printing Industry | Used as an azo dye intermediate for the production of reactive and disperse dyes | Coupling reaction |
| Coatings and Inks | Used as an intermediate for pigments and colorants to enhance color stability | Condensation reaction |
| Pharmaceutical Industry | Used as a drug synthesis intermediate in the preparation of certain antibiotics and anti-inflammatory agents | Nucleophilic substitution reaction |
| Pesticide Industry | Used as an intermediate in the synthesis of certain insecticides and fungicides | Acylation reaction |
| High-Performance Polymers | Used as a polymer modifier or crosslinking agent to improve material performance | Addition-condensation reaction |
Manufacturing Quality Control of Naphthol AS
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, physical state, and presence of impurities. Normal appearance is white to pale yellow powder or crystals with no visible foreign particles. |
| Melting Point | Capillary Melting Point Determination | Use a melting point apparatus to determine the melting temperature range and compare it with the standard value (typically 135–140°C) to assess purity. |
| Assay | High-Performance Liquid Chromatography (HPLC) | Use a reverse-phase C18 column with a UV detector (e.g., at 280 nm) to quantify the main component by external standard or internal standard method. |
| Impurity Analysis | HPLC Method | Use HPLC to detect related substances and evaluate potential synthetic by-products or degradation impurities in the raw material; calculate total impurity content. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Drying Method | Dry the sample at a specified temperature (e.g., 105°C) for a defined period, then weigh to calculate the percentage weight loss, assessing moisture and volatile components. |
| Residue on Ignition (Sulfated Ash) | Gravimetric Method | Treat the sample with sulfuric acid followed by high-temperature ignition, then weigh the residual inorganic material to evaluate inorganic impurity content. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, measure concentrations of heavy metal elements such as lead, arsenic, mercury, and cadmium to ensure compliance with pharmacopeial or safety standards. |
| Solubility | Solubility Test | Test solubility in solvents such as water, ethanol, and acetone to verify compliance with specified requirements. |
| Fourier Transform Infrared Spectroscopy (FTIR) Identification | Fourier Transform Infrared Spectroscopy (FTIR) | Compare the sample’s spectrum with a reference standard to confirm consistency of characteristic molecular absorption peaks for qualitative identification. |
Technical Specifications of Naphthol AS
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow solid |
| Purity | >=98.0% (by HPLC) |
| Melting Point | 137–141°C |
| Total Impurities | <=2.0% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
| Odor | Characteristic aromatic odor |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of Naphthol AS
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Naphthol AS
Packaging of Naphthol AS
Industrial Naphthol AS 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply