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HS Code |
379015 |
| Product Name | Acid Rhodamine B |
| Cas Number | 989-38-8 |
| Molecular Formula | C28H31ClN2O3 |
| Molecular Weight | 479.01 g/mol |
| Appearance | Reddish-violet powder |
| Solubility | Soluble in water and ethanol |
| Melting Point | 210-211°C (decomposes) |
| Dye Class | Xanthene dye |
| Maximum Absorption Wavelength | 554 nm (in water) |
| Ph Range For Use | 2 to 6 |
| Synonyms | Acid Red 52, C.I. 45100 |
| Hazard Statements | May cause skin and eye irritation |
As an accredited Acid Rhodamine B factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Acid Rhodamine B typically features a sealed amber glass bottle containing 25 grams, clearly labeled with hazard symbols and product details. |
| Shipping | *Acid Rhodamine B* is shipped in tightly sealed containers, protected from light and moisture, and labeled as hazardous material. It must comply with regulations for the transport of chemicals, including proper documentation and safety labeling. Handling requires gloves and eye protection. Store at room temperature, away from incompatible substances. |
| Storage | Acid Rhodamine B should be stored in a tightly sealed container, away from light, moisture, and incompatible substances such as strong oxidizers. It must be kept in a cool, dry, ventilated area, at room temperature. Proper chemical labeling and secondary containment are recommended to prevent leaks or spills. Always follow local regulations and safety guidelines for hazardous materials storage. |
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Purity 98%: Acid Rhodamine B with purity 98% is used in textile dyeing processes, where it ensures vibrant and uniform coloration on synthetic fibers. Molecular weight 479.02 g/mol: Acid Rhodamine B of molecular weight 479.02 g/mol is used in fluorescence microscopy, where it provides high sensitivity and signal intensity for cellular imaging. Melting point 210°C: Acid Rhodamine B with melting point 210°C is used in ink formulation, where it guarantees thermal stability during high-temperature printing. Stability temperature up to 80°C: Acid Rhodamine B stable up to 80°C is used in water-based paints, where it maintains color stability during storage and application. Particle size ≤10 µm: Acid Rhodamine B with particle size ≤10 µm is used in paper dyeing, where it enables smooth dispersion and consistent shade development. Solubility in water 50 g/L: Acid Rhodamine B with solubility in water 50 g/L is used in industrial water tracing, where it provides rapid and homogeneous signal distribution for flow detection. pH stability range 3–8: Acid Rhodamine B with pH stability range 3–8 is used in laboratory assays, where it delivers reliable fluorescence measurement across variable pH conditions. Absorption maximum 554 nm: Acid Rhodamine B with absorption maximum 554 nm is used in spectrophotometric analysis, where it yields precise and reproducible quantitative results. Viscosity grade low: Acid Rhodamine B of low viscosity grade is used in inkjet printing, where it allows efficient nozzle passage and prevents clogging during operation. Fluorescence quantum yield ≥0.65: Acid Rhodamine B with fluorescence quantum yield ≥0.65 is used in bio-imaging applications, where it enhances detection sensitivity for biomolecular labeling. |
Competitive Acid Rhodamine B prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
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Tel: +8615365186327
Email: admin@ascent-chem.com
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Every batch of Acid Rhodamine B that comes off our line carries a history of hands-on attention, strict quality testing, and a drive for reliable performance. We have seen this dye evolve through decades of industry demand, and it remains a staple in textiles, paper, leather, and even biological science. Its vivid color and distinct chemical behavior separate it from other dyes on today’s market. We know the work that goes into each drum. As manufacturers, we fine-tune our process, watching not just for color strength, but for subtle shifts in purity and solubility that only experienced eyes can spot.
Our typical model for Acid Rhodamine B features a deep, reddish-violet hue, water solubility, and a chemical structure based on the xanthene class. The specifications our technicians target include a dye content above 95% and minimal inorganic salts, ensuring a clean reaction when applied. Consistent shade is never enough by itself—manufacturers use thermal and chemical testing to confirm stability under standard dyeing and printing conditions. No corner-cutting, and no leftover residues clogging up the customer’s equipment. Every batch passes through filtration and drying, checked for particle size and pH. This attention to detail shows up at every stage in the supply pipeline.
On the floor, our operators measure pH values in the 3-4 range and run solubility trials against both soft and hard water. End users report that our dye holds its brightness well, even after repeated wash cycles, and doesn’t bleed or fade when used with the recommended auxiliaries. This comes from not just sticking to a recipe, but tweaking and adjusting each step based on decades of trial, error, and fine-tuning.
Those outside the plant may not realize just how demanding textile printing or paper coloring can get. Acid Rhodamine B shows up in products like nylon lace, wool yardage, silk scarves, greeting cards, and invitation paper, wherever a pop of red-violet is needed. The dye bath process rewards purity; even a trace of unreacted byproduct can dull the end result or throw off bath pH. Decades of feedback have shown that Acid Rhodamine B is often a favorite for single-bath, one-step dyeing, where color clarity and process speed matter most. Factories run continuous tests for wash and light fastness, as most decorative textiles will see both.
Our dye is much more than a commodity. We see how different grades and lots behave in lab analysis and in the production environments of our long-term clients. Leather finishers and paper manufacturers rely on our process consistency to avoid unexpected streaks or color shifts, so we track historical performance data across many years. This feedback loop between factory floor and client site lets us refine particle size, drying time, and color strength from season to season when regulations shift or raw material supplies change.
Not all dyes labeled “rhodamine” perform alike. The molecular backbone of Acid Rhodamine B gives it some clear edges over basic or neutral rhodamines. With an acidic character, it bonds tightly to protein fibers, giving fast, bright results on wool, nylon, and silk without the need for strong fixatives. Unlike rhodamine 6G or 123, this product brings a deeper, almost magenta tone and stands up well in acidic application baths. We choose this variant in our own textile trials precisely for its predictable, bold tone and solubility in water, not in organic or nonpolar solvents.
Compared with other synthetic colorants in the same viscosity and shade range, Acid Rhodamine B resists precipitation during extended storage. It withstands shifts in workshop temperature, which prevents production interruptions. From years monitoring employee experience, we know many powder dyes draw moisture from humid air, forming lumps or cakes that slow down mixing; our refining and drying methods minimize this issue, delivering free-flowing powder even in damp months.
Safety is top of mind for operators in chemical plants. Some similar synthetic dyes generate more dust or off-gassing, while Acid Rhodamine B, when manufactured under tight control, keeps airborne particles low. Production teams notice these small differences over thousands of pounds handled every season.
Quality does not come from a single check but from carefully tracked parameters at every major stage. In our factory certification tests, each lot of Acid Rhodamine B faces spectrophotometer scans for color strength. After filtration, residues undergo spot tests for iron and heavy metals, since even parts-per-million levels can cause downstream issues during high-speed print runs or direct dye applications. Alongside the numbers, years of in-house records record which filtration mesh works best and note if small process shifts have changed drying profiles.
Many buyers expect repeatable shade, but we also pay attention to shelf life and the tendency of fine powders to clump in humid storage rooms. We set targets not just for purity, but for how each drum behaves after months in the warehouse—this comes straight from talking with customers who spool through large volumes and dislike wastage from clumping or caking. We regularly open retained samples from different years to cross-check for strength and appearance.
The chemistry world has changed, and real manufacturers carry the responsibility to keep operations clean. Over the years, we invested in water recovery and closed-loop venting, cutting dye runoff and minimizing volatile losses. Regulatory expectations have tightened—wastewater runs through fine filtration and adsorption processes before leaving our plant. As dye-makers, we cannot treat disposal or emissions as someone else’s problem. Monitoring the breakdown products of Acid Rhodamine B in effluent streams led us to adjust our catalyst usage and explore enzymatic treatment steps that push the process to completion, reducing trace contamination.
Decades ago, companies barely tracked what left the factory. We now monitor and report environmental performance with the seriousness it deserves. This has a direct effect on product selection for people looking for truly responsible sourcing without lost performance. Over countless audits and inspections, we adapted production lines to minimize operator exposure and environmental impact—not just for legal compliance but to pass on a business fit for the next generation. Our suppliers are screened for trace chemicals and persistent pollutants, and we regularly upgrade filtration tech as new best practices develop.
No system runs perfectly all the time. From day one, our team has fielded site calls from textile operators puzzling over streaking or spots, to pulp and paper firms chasing odd color shifts in their tanks. Most complaints—when they reach us—come not from the dye alone, but from small incompatibilities with local water, detergents, or mixing speeds. Thanks to boots-on-the-ground knowledge, we walk clients back through the full process. Higher-than-normal pH, excess calcium in tap water, too rapid a heating cycle—each factor shows up in shade changes that only a manufacturing chemist, with years of context, is likely to suspect.
Acid Rhodamine B has a distinct visual threshold for impurities. Off-shade lots almost always tie back to variations in raw material supply or small line maintenance issues. We've learned to monitor these variables more overtly and train operators to run visual and chemical checks early rather than wait for problems to show downstream. Our quality assurance workflow captures batch trends over years, offering prevention as well as technical fixes. This level of openness builds trust. Instead of simply shipping a product out the door, we track customer outcomes and supply technical input when process variables drift. Our long-term partners use the dye with confidence and report fewer headaches down the line.
Academic and industrial labs frequently tap Acid Rhodamine B for its fluorescence and spectral properties. Years of sample preparation in our R&D labs have highlighted the dye’s sharp absorption peak, used in tracing water flow, biological imaging, and instrument calibration. We provide standardized forms for these high-purity uses, drawing on our experience with chromatography and high-resolution spectral equipment. Chemists in protein staining, cell analysis, and spectroscopy settings benefit from our tight controls on trace byproducts and packaging cleanliness. Our investment in analytical readiness goes back to lab workbench feedback—early batches exposed subtle impurity peaks in TLC scans, helping us revise procedures and offer a cleaner product to the research sector.
Over time, clients returned for help interpreting spectral quirks or separating close-lying peaks in their data. We see the unique challenges that research users encounter and prioritize clear origin traceability and proper documentation. Unlike general industrial-grade producers, we continually adapt purification and drying routines for high-precision requirements, drawing on first-hand R&D experience.
Demand for specialty dyes has seen a shift in recent years. Traceability and purity testing now play a central role in dye selection. Brands align with factories that can show, not just promise, consistent trace metals, color index numbers, and ingredient transparency. We’ve invested heavily in full-lot traceability and batch-level inspection since our process and people stand behind every order, not a generic supplier.
With new ecological and occupational health standards, buyers no longer accept “good enough.” They call for documented sourcing, operator training records, and long-term environmental impact evidence. We have moved away from legacy processes that relied on cheaper processing aids or heavy metals. Instead, we focus on clean, reproducible synthesis where each raw component can be traced and approved. Each change in law or market demand puts pressure on manufacturers, not middlemen. Only direct production oversight offers the agility and technical know-how required to respond quickly.
Too many buyers have been burned by misrepresented material from unauthorized traders or knock-off supply chains. Direct communication from source to end user matters more than ever. As direct manufacturers, we see the value of in-plant technical support and on-the-record process monitoring. Every feedback call, every batch test helps build a foundation for repeatable performance. Our processes have grown not only out of technical necessity, but from years of customer engagement and iterative learning.
Unlike third-party resellers who offer little insight into product history, we witness every stage—mixing, filtering, drying, and packaging. Over the years, this has built trust with industry partners who count on consistency for their own manufacturing productivity and customer relationships.
Innovation does not happen in isolation. The steps we take to refine Acid Rhodamine B—whether in handling packaging, dust suppression, or raw material screening—often come directly from factory floor experience. Decades of feedback from shop supervisors, maintenance managers, and lab chemists have shaped our practices. We trial new equipment, tweak drying times, or adjust particle sizes only with evidence in hand—no guesswork. Over time, this culture of reflection and adjustment lets us anticipate rather than react to market and technical pressures.
Our technical support team speaks to both research and production users who push the product in new directions—be it with digital textile printing, specialist chromatography, or fluorescence-based trace work. These changes are possible because real-world performance data, not just paper specs, guide our decision-making at every level of production.
Experienced chemical producers know that markets rarely sit still. Regulatory bodies keep updating what is acceptable in colorants, especially for sensitive end uses in packaging, children’s products, or food-related substrates. Our regulatory and technical teams stay in step with changing lists of restricted substances and new analytical testing techniques. We get regular queries about trace contaminants and anticipate tighter supply chain scrutiny. This readiness to adapt brings a reassurance to customers, many of whom cycle through regular audits from global brands or government inspections.
Instead of seeing these changes as obstacles, we look for ways to use them as blueprints for process upgrades or new investments in wastewater treatment and raw materials pre-screening. This responsiveness shows up in the consistency and safety of our end product, reflected in long-term supply relationships and detailed compliance records maintained for every lot.
Behind every kilo of Acid Rhodamine B moving through our production line stand teams of specialists trained not only in synthesis but also safe handling, quality control, and environmental protection. We have built an internal culture where moments of near-miss or process hiccup get shared and analyzed, not hidden. Lessons feed directly into standard operating procedures, training new operators on the real stakes involved in chemical production. In this way, we push the whole workforce to take personal pride in each batch produced.
Caring for our staff means investing in air handling, process automation, and continuous safety monitoring on the shop floor. Consistent turnover in far-flung supply chains often erases these workplace learnings over time—our continuity on site preserves them. Employee wellbeing feeds directly into the care and exactitude our team brings to each shift, without need for outside pressuring.
As end users continue to demand greater transparency, purity, and performance in dyes, our commitment as a true manufacturer remains to offer Acid Rhodamine B that meets tough industry and regulatory standards without shortcuts. These values have been shaped by generations of plant engineers, chemists, and packaging staff who firsthand understand both the possibilities and the risks. Ongoing investment in lab instrumentation, environmental safeguards, and process control lets us improve year by year, informed by the genuine needs and challenges our customers face.
Successful manufacturing is not a matter of copying yesterday's playbook or following boilerplate protocols. It calls for learning from equipment breakdowns, process errors, client reports, and even environmental mishaps. Through this ongoing experience and willingness to adapt processes, manufacturers ensure that Acid Rhodamine B continues to earn a place among professionals who depend on reliability, color strength, and traceable supply.