Rhodamine B Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 81-88-9 |
| Product name | Rhodamine B |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeReagent 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 Rhodamine B
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Rhodamine B Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Rhodamine B
| Industry | Application | Process |
|---|---|---|
| Analytical Chemistry | Fluorescent tracer; pH indicator (color transition range: pH 0–1.5, yellow → blue) | Prepared as a solution for titration or fluorescent detection |
| Biomedical Research | Cell staining; mitochondrial labeling; fluorescent microscopy probe | Dissolved in water or ethanol for staining live cells or fixed tissues |
| Environmental Science | Tracing groundwater and surface water flow direction and velocity | Low-concentration rhodamine B solution injected into water bodies and migration pathways tracked via fluorescence detection |
| Industrial Inspection | Leak detection; fluid tracing in pipelines | Added to closed systems and optically monitored using its strong fluorescence |
| Materials Science | Fluorescent whitening agent; laser dye (for tunable dye lasers) | Dissolved in suitable solvents as laser gain media or doped into polymer matrices |
| Teaching Laboratories | Demonstration of fluorescence phenomena; diffusion experiments | Dilute solutions prepared for classroom visualization |
Manufacturing Quality Control of Rhodamine B
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination based on peak area comparison with reference standard using reversed-phase chromatography and UV detection at 554 nm. |
| Loss on Drying | Gravimetric (Oven Drying) | Mass loss measured after drying sample at 105 C for 2 h under atmospheric pressure. |
| Residue on Ignition | Gravimetric (Sulfated Ash) | Mass of inorganic residue after charring and ignition at 700-750 C followed by sulfuric acid treatment. |
| Heavy Metals (as Pb) | Colorimetric (Thiourea Method) | Formation of colored complex with heavy metals in acidic medium; compared visually or spectrophotometrically against lead standard. |
| Arsenic | Gutzeit Method | Generation of arsine gas from sample under acidic reduction, absorbed into silver diethyldithiocarbamate solution for colorimetric quantitation. |
| Chloride | Argentometric Titration (Mohr Method) | Titration with standardized silver nitrate solution using potassium chromate indicator; endpoint signaled by brick-red precipitate. |
| Sulfate | Barium Sulfate Gravimetry | Precipitation as BaSO4 after acidification and addition of barium chloride, followed by ignition and weighing. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration based on iodine consumption in a reaction specific to water in methanol-pyridine medium. |
| Organic Impurities (Related Substances) | HPLC-DAD | Separation and detection of structurally related compounds using gradient HPLC with diode-array detection at multiple wavelengths. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Measurement of hydrogen ion activity using calibrated glass electrode in a 1% w/v aqueous solution. |
| Solubility in Water | Visual Observation | Qualitative assessment of complete dissolution in distilled water at 25 C with specified concentration (e.g., 1 g/100 mL). |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid using calibrated capillary tube method per USP <741>. |
Technical Specifications of Rhodamine B
| Test Item | Specification |
|---|---|
| Appearance | Dark red crystalline powder |
| Purity | >=98.5% |
| Melting Point | 210-212°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
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 Rhodamine B
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Rhodamine B
Packaging of Rhodamine B
Industrial Rhodamine 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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