2-Aminophenol-4-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 98-37-3 |
| Product name | 2-Aminophenol-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 2-Aminophenol-4-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Aminophenol-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 2-Aminophenol-4-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate | Used in the synthesis of direct dyes and acid dyes |
| Pharmaceutical Industry | Pharmaceutical Intermediate | Used in the synthesis of certain drugs, including cardiovascular therapeutics |
| Photographic Industry | Photosensitive Material | Applied as a component of photosensitive materials for manufacturing photographic paper and film |
| Cosmetics Industry | Ingredient in Skincare Products | Used as an antioxidant to protect skin from free radical damage |
| Chemical Industry | Synthesis of Other Chemical Products | Applied as a raw material or intermediate in the synthesis of various chemical products |
Manufacturing Quality Control of 2-Aminophenol-4-sulfonic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, state, and impurities under natural light or standard illumination. 2-Aminophenol-4-sulfonic acid is typically a white to light brown crystalline powder. |
| Purity/Content | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 chromatographic column with an appropriate ratio of water-organic solvent (such as methanol or acetonitrile) as the mobile phase, and a UV detector (usually at 254 nm or 280 nm wavelength) for quantitative analysis of the main component content, calculating purity. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Atmospheric Drying Method | Dry the sample at a specified temperature (e.g., 105°C) until constant weight, and determine the percentage of mass loss to assess moisture and volatile substance content. |
| Residue on Ignition (Sulfate Ash) | High-Temperature Incineration Method | Char the sample and then incinerate it at high temperature (typically 700–800°C), weigh the residual inorganic material to control the total amount of inorganic impurities. |
| pH Value | pH Meter Measurement | Prepare a solution of a certain concentration (e.g., 1% w/v) and measure its acidity or alkalinity using a calibrated pH meter. 2-Aminophenol-4-sulfonic acid is acidic due to the sulfonic acid group. |
| Heavy Metals | Atomic Absorption Spectroscopy (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 by AAS or ICP-MS to ensure compliance with pharmacopoeia or industry limit requirements. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use a gradient elution program to separate the main peak and potential impurities (such as unreacted raw materials, by-products, degradation products), and perform qualitative and quantitative analysis by area normalization or reference standard method. |
| Melting Point | Capillary Melting Point Determination | Determine the melting temperature range of the sample using a melting point apparatus or Thiele tube method, which serves as a supplementary indicator for identification and purity (literature melting point is approximately 285°C, decomposing). |
| UV-Vis Absorption Spectrum | UV-Vis Spectrophotometry | Prepare a dilute solution and scan the absorption spectrum at specific wavelengths (e.g., 250–300 nm) for structural confirmation and preliminary purity assessment. |
Technical Specifications of 2-Aminophenol-4-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Orange to amber to dark red crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 195–200 °C (decomposes) |
| Total Impurities | <=2.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=20 ppm (as Pb) |
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 2-Aminophenol-4-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Aminophenol-4-sulfonic acid
Packaging of 2-Aminophenol-4-sulfonic acid
Industrial 2-Aminophenol-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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