Naphthol AS-LC Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 4273-92-1 |
| Product name | Naphthol AS-LC |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial 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 Naphthol AS-LC
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Naphthol AS-LC Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Naphthol AS-LC
| Industry | Application | Process |
|---|---|---|
| Dye Manufacturing | Used in the synthesis of azo dyes | Reacted with various diazo components to produce azo dyes of different colors |
| Textile Printing and Dyeing | Applied as a direct dye for dyeing cellulose fibers such as cotton and linen | Dyeing performed via exhaust or pad dyeing methods |
| Leather Industry | Used for leather coloring | Leather impregnated to achieve the desired shade |
| Cosmetics Industry | Used as a colorant additive in cosmetic formulations | Mixed with other ingredients to prepare products with specific color effects |
Manufacturing Quality Control of Naphthol AS-LC
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification based on peak area comparison against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration where iodine reacts stoichiometrically with water in a methanol-based solvent system. |
| Ash Content | Gravimetric Analysis (Incineration) | Residue mass after high-temperature incineration (550-600 C) of a weighed sample, expressed as weight percent. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride anions using anion-exchange column and suppressed conductivity detection. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Multi-element detection via plasma ionization and mass spectrometric analysis for trace metal quantification. |
| pH of Aqueous Suspension | Potentiometric Measurement | Measurement of hydrogen ion activity in a 10% w/w aqueous suspension using calibrated glass electrode. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity patterns to determine volume-based particle size distribution. |
| Bulk Density | ASTM D1895 Method A | Mass per unit volume of freely settled powder measured in a calibrated cylinder under standardized conditions. |
| Organic Volatile Impurities | GC-FID | Separation by capillary GC followed by flame ionization detection; quantification relative to internal standard. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed as the temperature range over which solid-to-liquid phase change occurs. |
| Residue on Ignition | Gravimetric Analysis (Ignition at 750 C) | Mass loss measurement after ignition at specified temperature; residue reported as % w/w. |
| Sulfated Ash | Gravimetric Analysis (H2SO4 treatment + ignition) | Sample treated with sulfuric acid prior to ignition; residual sulfate ash determined gravimetrically. |
Technical Specifications of Naphthol AS-LC
| Test Item | Specification |
|---|---|
| Appearance | Pale-gray solid |
| Purity | >=98.5% (by HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 178-182°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Soluble in hot ethanol, acetone and alkaline aqueous solution; practically insoluble in cold water |
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 Naphthol AS-LC
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Naphthol AS-LC
Packaging of Naphthol AS-LC
Industrial Naphthol AS-LC 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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