ETHYL EOSIN Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 6359-05-3 |
| Product name | ETHYL EOSIN |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 ETHYL EOSIN
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk ETHYL EOSIN Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of ETHYL EOSIN
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Colorant | Dissolved in alcoholic solvents and homogeneously blended with other components |
| Biotechnology | Fluorescent probe | Excited by light at a specific wavelength for labeling biomolecules |
| Pharmaceuticals | Dye intermediate | Used in the synthesis of other pharmaceutical dyes or labeling agents |
Manufacturing Quality Control of ETHYL EOSIN
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantifies ethyl eosin concentration based on absorbance at characteristic wavelength (e.g., ~518 nm) using Beer-Lambert law. |
| Loss on Drying | Gravimetric Analysis (Thermogravimetry) | Measures mass loss after drying at specified temperature (e.g., 105 C) to determine volatile content including moisture. |
| Residue on Ignition | Gravimetric Analysis (Sulfated Ash) | Determines inorganic residue after high-temperature ignition following sulfuric acid treatment. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals by measuring absorption of specific wavelengths after acid digestion and chelation. |
| Chloride Impurity | Potentiometric Titration | Determines chloride ion concentration via titration with silver nitrate using silver indicator electrode. |
| Sulfate Impurity | Gravimetric Analysis | Precipitates sulfate as barium sulfate under controlled conditions and measures resulting precipitate mass. |
| pH of Aqueous Solution | pH Potentiometry | Measures hydrogen ion activity in a defined aqueous suspension or solution using calibrated pH electrode. |
| Solubility in Water | Visual Inspection / Filtration Test | Evaluates complete dissolution in specified volume of water at controlled temperature; absence of undissolved particles indicates compliance. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separates and quantifies residual solvents using flame ionization detection after headspace or direct injection. |
| Related Substances | High-Performance Liquid Chromatography (HPLC-UV) | Separates and detects structurally related impurities (e.g., eosin, diethylated analogs) using reversed-phase column and UV detection. |
| Iron Content | Colorimetric Spectrophotometry (1,10-Phenanthroline) | Forms orange-red complex with Fe2+; absorbance measured at ~510 nm for quantification. |
| Bulk Density | Volumetric Gravimetry | Calculates mass per unit volume (g/mL) of freely settled powder in standardized cylinder under controlled conditions. |
Technical Specifications of ETHYL EOSIN
| Test Item | Specification |
|---|---|
| Appearance | Red crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 245-250°C (decomposes) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Soluble in water and ethanol; slightly soluble in chloroform |
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 ETHYL EOSIN
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of ETHYL EOSIN
Industrial ETHYL EOSIN 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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