EOSIN B Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 56360-46-4 |
| Product name | EOSIN B |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeReagent GradeIndustrial 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 EOSIN B
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk EOSIN B Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of EOSIN B
| Industry | Application | Process |
|---|---|---|
| Biomedical | Tissue stain for microscopic visualization of cells and tissues (e.g., cytoplasmic staining in H&E staining) | Prepared as an aqueous or alcoholic solution for staining paraffin-embedded or frozen tissue sections |
| Analytical Chemistry | Acid-base indicator (color change range: pH 2.0–3.0, red → yellow) | Formulated as an ethanol solution for endpoint detection in titrations |
| Photochemistry | Photosensitizer for photocatalytic reactions or photodynamic therapy research | Integrated into photoinduced electron transfer or reactive oxygen species generation systems after dissolution in ethanol |
| Materials Science | Fluorescent probe or component in dye-doped materials | Blended with polymers or coated onto substrates after dissolution in alcoholic solvents |
| Teaching Laboratories | Reagent for demonstration staining or fluorescence experiments | Prepared as a standardized ethanol solution for classroom demonstrations or student laboratory exercises |
Manufacturing Quality Control of EOSIN B
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Measures absorbance at characteristic wavelength (e.g., ~525 nm) and calculates concentration using Beer-Lambert law and certified reference standard. |
| Moisture Content | Karl Fischer Titration | Quantifies water via stoichiometric reaction between water, iodine, sulfur dioxide, and base in anhydrous methanol medium. |
| Residue on Ignition | Gravimetric Analysis | Determines non-volatile inorganic impurities by ignition at 500-600 C and weighing residual ash. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures total heavy metal content after acid digestion by quantifying absorbance of ground-state atoms in flame or graphite furnace. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Detects chloride ions via precipitation titration using silver nitrate and silver indicator electrode. |
| Sulfate Impurity | Gravimetric Analysis with BaCl2 | Precipitates sulfate as barium sulfate, filters, dries, and weighs the insoluble precipitate. |
| pH of Aqueous Solution | pH Meter Measurement | Measures hydrogen ion activity in a standardized aqueous suspension (e.g., 1% w/v) using calibrated glass electrode. |
| Solubility in Ethanol | Visual Inspection / Filtration Test | Evaluates complete dissolution in specified grade ethanol (e.g., 95%) at room temperature with no visible undissolved particles or haze. |
| Color Value (APHA) | Colorimeter or Visual Comparison | Compares sample solution color intensity against APHA platinum-cobalt standard scale under controlled lighting. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separates and quantifies residual solvents (e.g., methanol, acetone) using capillary column and flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Analyzes scattered laser light from dispersed particles to determine size distribution based on Mie theory. |
| Microbial Contamination | Membrane Filtration and Plate Count | Captures microorganisms on sterile membrane filter, transfers to appropriate agar media, and enumerates colony-forming units after incubation. |
Technical Specifications of EOSIN B
| Test Item | Specification |
|---|---|
| Appearance | Red crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Freely soluble in ethanol; practically insoluble in 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 EOSIN B
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of EOSIN B
Industrial EOSIN B 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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