EOSIN B Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 548-24-3 |
| Product name | EOSIN B |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent GradeFood GradeCosmetic 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 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 |
|---|---|---|
| Textiles | Red dye for dyeing natural fibers such as cotton, silk, and wool | Acid dyeing process |
| Biology | Tissue staining under microscopy (e.g., botanical and pathological samples) | Biological specimen fixation and staining procedure |
| Cosmetics | Pigment in color cosmetics, including lipsticks and blushes | Cosmetic formulation mixing and pressing process |
| Papermaking | Colorant for colored paper and decorative paper | Paper coating or immersion dyeing process |
| Food Industry | Food colorant (approved for use in certain countries/regions, subject to safety regulations) | Food additive blending process |
| Photography | Sensitizer or toner in color photography | Photosensitive material coating process |
| Laboratory Research | pH indicator or fluorescent labeling reagent | Chemical analysis experimental procedure |
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., ~548 nm) and calculates concentration using Beer-Lambert law and certified reference standard. |
| Moisture Content | Karl Fischer Titration | Quantifies water via coulometric or volumetric titration with iodine-based reagent; reaction stoichiometry enables precise water determination. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Atomizes sample in flame or graphite furnace and measures absorption of specific wavelengths by metal atoms. |
| Sulfated Ash | Gravimetric Analysis | Ignites sample at 700-750 C, converts non-volatile impurities to sulfates, and weighs residual ash after cooling. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Uses silver nitrate titrant and silver indicator electrode to detect endpoint based on change in potential during AgCl precipitation. |
| pH (1% aqueous solution) | pH Meter Measurement | Measures hydrogen ion activity in a standardized aqueous solution using calibrated glass electrode system. |
| Organic Impurities (Related Substances) | HPLC-UV | Separates components on reversed-phase column and detects impurities via UV absorbance relative to main peak. |
| Iron (Fe) Content | ICP-OES | Atomizes and excites sample in argon plasma; quantifies Fe by measuring intensity of characteristic emission lines. |
| Filterable Residue | Membrane Filtration and Gravimetry | Filters solution through defined pore-size membrane, dries residue, and weighs to determine insoluble particulate matter. |
| Bulk Density | Tap Density Measurement | Determines mass per unit volume after controlled tapping of powder in graduated cylinder per ASTM D1895. |
| Particle Size Distribution | Laser Diffraction | Analyzes angular scattering pattern of laser beam passed through dispersed particles to calculate size distribution. |
| Residual Solvents (e.g., ethanol, acetone) | Gas Chromatography (GC-FID) | Separates volatile solvents by capillary column and detects via flame ionization; quantified against calibration standards. |
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% |
| Melting Point | 240-245°C |
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 | |
NMR Spectra of EOSIN B
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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