China Factory Direct
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| CAS number | 93-00-5 |
| Product name | 6-Amino-2-naphthalenesulfonic 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate in the synthesis of azo dyes | Diazotization and coupling reactions |
| Pharmaceutical Industry | Precursor in the synthesis of certain pharmaceuticals | Organic synthesis processes including condensation and sulfonation |
| Analytical Chemistry | Used as an analytical reagent | Preparation of colorimetric reagents or test solutions |
| Detection Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and presence of visible impurities. Typically appears as a white to pale yellow crystalline powder. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with UV detection (e.g., 254 nm), employing water-methanol or buffer solutions as mobile phase for quantitative analysis of the main component. |
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Assesses total impurities and individual impurities via peak area normalization or external standard method to evaluate sample purity. |
| Moisture Content | Karl Fischer Titration | Utilizes KF reagent to quantitatively react with water in the sample; suitable for precise determination of trace moisture (typically required ≤5%). |
| Sulfonic Acid Group Content | Acid-Base Titration | Titrates sulfonic acid groups in non-aqueous medium using standardized alkaline solution to calculate content and verify structural characteristics. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, measures residual heavy metals such as lead, arsenic, mercury, and cadmium, ensuring compliance with pharmacopoeial or environmental limits. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Identifies organic impurities such as synthetic by-products, degradation products, unreacted raw materials, isomers, or other sulfonation by-products. |
| pH Value | pH Meter Measurement | Prepares a solution of the sample at a specified concentration (e.g., 1%), then measures acidity/alkalinity using a calibrated pH meter. |
| Residue on Ignition | Sulfate Ash Method | Heats the sample to high temperature, treats with sulfuric acid, and weighs the residue to assess inorganic impurity levels. |
| Solubility | Solubility Test | Observes the sample’s solubility in solvents such as water, ethanol, acetone, etc., confirming compliance with specified solubility performance. |
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow or light orange crystalline powder |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 270-275°C (decomposes) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.