3-Aminophenol hemisulfate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 68239-81-6 |
| Product name | 3-Aminophenol hemisulfate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeCosmetic GradeFood Grade |
| Packaging | 25KG/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 3-Aminophenol hemisulfate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-Aminophenol hemisulfate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-Aminophenol hemisulfate
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate | Used in the synthesis of dye intermediates, including certain azo and anthraquinone dyes |
| Pharmaceutical Industry | Pharmaceutical Raw Material | Serves as a key intermediate in drug synthesis, participating in the production of multiple pharmaceuticals |
| Cosmetics Industry | Antioxidant | Applied as an antioxidant ingredient in cosmetics to protect skin from free radical damage |
| Textile Industry | Dyeing Auxiliary | Employed as a dyeing auxiliary to enhance dyeing performance or stabilize dye properties |
Manufacturing Quality Control of 3-Aminophenol hemisulfate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (3-aminophenol sulfate content) | Acid-base titration with NaOH | Quantifies active ingredient by neutralizing acidic sulfate protons with standardized sodium hydroxide solution. |
| Water content | Karl Fischer titration | Measures water via iodine-sulfur dioxide redox reaction in anhydrous methanol/pyridine medium. |
| Heavy metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Determines total heavy metal impurities by atomization and absorption of element-specific UV-Vis radiation. |
| Sulfate content | Gravimetric analysis as BaSO4 | Precipitates sulfate as barium sulfate and quantifies by weighing the dried precipitate. |
| Residue on ignition | Gravimetric method | Measures non-volatile inorganic impurities remaining after high-temperature incineration at 700-800 C. |
| Chloride content | Potentiometric titration with AgNO3 | Detects chloride ions by silver nitrate titration using a silver indicator electrode. |
| pH of aqueous solution (1% w/v) | pH meter measurement | Measures hydrogen ion activity in a standardized aqueous suspension using calibrated pH electrode. |
| Related substances (impurity profile) | HPLC with UV detection | Separates and quantifies organic impurities using reversed-phase chromatography and UV absorbance at 254 nm. |
| Iron content | ICP-OES | Quantifies trace iron by plasma-induced atomic emission at characteristic wavelengths. |
| Loss on drying | Thermogravimetric method | Determines volatile matter by mass loss upon heating at 105 C for 2 hours under controlled conditions. |
| Appearance and color | Visual inspection against standard solutions | Evaluates physical state, homogeneity, and color intensity by comparison to reference standards under controlled lighting. |
| Bulk density | Graduated cylinder method | Measures mass per unit volume of freely settled powder using standardized tapping procedure. |
Technical Specifications of 3-Aminophenol hemisulfate
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | ≥98.0% |
| Loss on drying | ≤1.0% |
| Ash | ≤1.0% |
| Fe | ≤50 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 3-Aminophenol hemisulfate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 3-Aminophenol hemisulfate
Industrial 3-Aminophenol hemisulfate 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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