|
HS Code |
414118 |
| Product Name | Phenol Red Sodium Salt |
| Chemical Formula | C19H13NaO5S |
| Molar Mass | 376.36 g/mol |
| Cas Number | 143-74-8 |
| Appearance | Reddish-brown to purple powder |
| Solubility In Water | Soluble |
| Ph Range | 6.8 - 8.2 (as a pH indicator) |
| Color Change Range | Yellow (pH 6.8) to Red (pH 8.2) |
| Melting Point | > 300°C (decomposes) |
| Storage Conditions | Store at room temperature, dry, tightly closed |
| Uses | pH indicator in cell culture and laboratory reagents |
As an accredited Phenol Red Sodium Salt factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Phenol Red Sodium Salt, 25g: Supplied in a tightly sealed amber glass bottle with a screw cap, labeled with safety and product information. |
| Shipping | Phenol Red Sodium Salt is shipped in tightly sealed containers to prevent contamination and degradation. It is typically packed in accordance with standard chemical safety guidelines, protected from light, moisture, and physical damage. Shipping complies with relevant regulatory requirements and usually includes safety data and labeling for secure handling during transit. |
| Storage | Phenol Red Sodium Salt should be stored in a tightly closed container, away from direct sunlight, heat, and moisture. Keep it at room temperature (15–25°C) in a dry, well-ventilated area. Avoid contamination with incompatible materials such as strong acids and oxidizers. Proper labeling and secure placement are essential to ensure safe handling and prevent accidental exposure or spillage. |
Competitive Phenol Red Sodium Salt prices that fit your budget—flexible terms and customized quotes for every order.
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Tel: +8615380400285
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Day in and day out, our production lines deliver Phenol Red Sodium Salt with the level of consistency demanded by both research and industrial labs. Countless customers come to us because they need more than a generic indicator dye—they need a product backed by a manufacturer’s technical experience and an ear tuned to the practical realities of scientific work. Phenol Red Sodium Salt, carrying the known CAS number 143-74-8, steps up as a well-trusted pH indicator, particularly in cell culture and various water-based applications. Over decades, its usefulness has been reinforced not just by literature but by repeated, hands-on success with real biological samples and process controls.
We see many new users ask why labs often choose this product over less expensive alternatives or basic litmus dyes. The answer sits in the hands-on details of working with live culture and analytical systems. Unlike universal indicators, Phenol Red provides sharp, clear color transitions between pH 6.8 and 8.2, turning from yellow to red, then purple. This defined transition matters for biologists monitoring the health of eukaryotic cells, where small changes in culture conditions point to early shifts in metabolism. Our batches, tested for solubility and consistency, help researchers avoid the frustration of slow-dissolving powders or irregular color intensity. Every time someone picks up one of our Phenol Red Sodium Salt bottles, they get what they were expecting, and their workflow runs without a hitch.
In cell biology, accuracy comes down to the indicator’s reliability every time you check a flask or plate. Many commercial ready-made media formulas include Phenol Red Sodium Salt at a standard concentration because it provides a visual backup to electronic pH meters, warning scientists if something has gone wrong during incubation. Media turns orange or yellow below pH 6.8, signaling acidification, and shifts dark red or violet in more alkaline conditions. Over the years, our production team has answered calls and emails from labs hitting snags with off-brand dyes—complaints range from unexpected precipitation to inconsistent color development. We encourage technicians to look for the dye’s clarity and color snap, both signs of high-grade material. Across thousands of kilograms produced, we stick to a process that screens raw materials twice before warehouse release, then runs color development checks on every finished lot. We do this not out of bureaucracy, but because labs rely on quick, clear feedback from their media.
While many scientists start out with a basic indicator like methyl red or bromothymol blue, real-world cell culture prefers Phenol Red Sodium Salt. Each different dye comes with its own strength, but few offer the combination of safety, stability, and clear transition provided here. Unlike phenolphthalein, which suits strong-alkali titrations but offers little benefit in near-neutral cell culture, Phenol Red Sodium Salt works safely alongside delicate cell lines. Its sodium salt form dissolves quickly and fully in water, avoiding the cloudiness sometimes found in simple phenol red powders or compounded tablets. Many labs see cost savings and a reduction in human error, as there’s no need to filter out particulate residue, and the solution stays transparent. We field repeated questions about batch-to-batch stability, and our customers often stress how wasted time with low-quality dyes costs them experiments—not to mention staff morale. Every gram we ship stands up to intensive scrutiny from both our side and by end-users.
Over years working with universities, pharma, and tech startups alike, our team keeps hearing a few practical questions about this indicator’s performance. Technicians want to know if it interferes with cell viability when used as recommended. Experience and literature have shown that Phenol Red Sodium Salt at standard concentrations (about 0.005% to 0.01% in media) does not disrupt mammalian cell division or differentiation. In fact, it helps flag early culture acidification before the human eye would otherwise notice a change. Some customers, especially those new to serum-free media or primary cell lines, worry about the potential for minor estrogenic effects. Reviews of peer-reviewed studies and personal lab experience confirm that any hormone-mimicking effect appears negligible in concentrations used for pH monitoring. Cells thrive or fail for many reasons, but a high-grade Phenol Red Sodium Salt, checked for heavy metals and organic impurities, is not one of them.
The indicator’s utility traces back to how well it’s made—and that starts with transparent specifications. We provide a clear technical cut: Our typical material shows purity above 98%, with UV-Visible spectrum checks confirming expected absorbance maxima close to 433 nm (in acidic range) and 560 nm (in basic range). Particle size matters for fast solubility, so we granulate to avoid caking or clumping, which can stall busy technicians. Each customer shipment comes from a lot holding documented test results, and we maintain traceability so any performance concern receives immediate review. On the bench, every bottle provides a smooth pour, a clean dissolve, and rapid onset of color after media mixing. Scientists working under pressure rarely fire off compliments, but we know we’re doing something right because our reorder rates remain well above industry standards.
Talk travels fast among labs; everyone knows horror stories of dodgy batches from anonymous resellers. Years back, after a spate of unpredictable performance from imported dyes, many groups reached out to us directly, asking for documentation and the chance to speak with our production chemists. Since then, we’ve learned that supplying reliable Phenol Red Sodium Salt means more than listing a product code on a website—it means holding ourselves to published standards every step of the way. Our plant workers run each batch through color intensity and solubility tests, and every QC technician passes a multi-point checklist before we ship a single jar. Chemists in our review meetings pull up data from years past, comparing new results with a bank of existing benchmarks. This kind of institutional memory, built up through repeated hands-on experience, forms a buffer against those marketplace variables that cheaper suppliers simply don’t address.
Turning out quality Phenol Red Sodium Salt chews up time and skill—a lot of which beginners might miss until things go wrong inside the customer’s flask. We work to avoid contamination by heavy metals, since even parts-per-million traces can mess with sensitive enzyme assays or cell line work. Precise control of drying steps, grinding, and packing keeps the powder flowing easily and ensures long shelf life without caking. Whenever we tweak our process based on customer feedback—maybe a demand for finer grains or modified solubility curves—we open up discussions with both our R&D lab and the production line. Feedback flows both ways, because the best ideas often come from technicians elbow-deep in the real stuff, not just from someone with a clipboard. This culture of openness and correction keeps our Phenol Red where it belongs in the lab: working quietly in the background, easily overlooked because it simply does its job.
Even a good batch can run into trouble if it’s handled carelessly before it hits the bench. Storage at room temperature, away from direct sunlight and in a tightly sealed container, keeps the dye free from moisture and degradation. Once opened, our jars shrug off normal lab humidity thanks to careful drying and desiccant packaging. Cases come packed with user guides written by actual chemists, reflecting years of seeing the same problems crop up—be it with accidental spillage, accidental overdosing, or confusion between the sodium salt and other, less soluble forms. As a manufacturer, we see it as our job not just to ship jars, but to prevent avoidable mistakes wherever possible. This philosophy keeps countless customer projects running on time and on spec.
Some procurement officers focus solely on per-kilogram pricing, but the lab staff tasked with using a poor-quality dye know the costs come later—lost samples, repeated assays, extra overtime clicking through unknown errors. We have years of feedback data showing that buying from a manufacturer who holds the line on technical and purity standards yields fewer customer complaints, higher productivity, and a lot less waste. Sticking with high-purity Phenol Red Sodium Salt, especially in the sodium salt form, keeps both your books and your science running right. Recent years have seen cost pressures mount across the chemical world, but we believe cutting corners on quality wastes much more in the long run than any up-front savings could justify.
No story captures the value of good raw materials like the days spent hunting for the source of a failed experiment. Across many customer anecdotes, the culprit sometimes circles back to a poorly controlled dye—faded colors, insoluble particles, or contaminants altering results. By manufacturing our own Phenol Red Sodium Salt, we close the loop between feedback and corrective action. One researcher submitted a sample of “mystery residue” suspected to cause inconsistent pH readings. Our joint investigation revealed a low-grade dye filled with inert fillers and oxidized byproducts. Since then, we run extra checks during our milling step, confirming that each batch stays free of insoluble grit. End users remember product reliability, not marketing slogans.
Environmental and operator safety form pillars of our production philosophy. Each lot of Phenol Red Sodium Salt comes from a closed-system process that limits waste, with exhaust scrubbing to control airborne dust, and every operator gets advanced safety training and protective gear. We continually review our disposal protocols, both in-house and in line with local and national regulations, so end users don’t inherit unnecessary risk. We produce detailed use-and-disposal notes for every major customer, built around actual regulatory cases, not boilerplate recommendations. This proactive approach supports both people and the places they work, providing practical, tested advice rather than vague promises.
Open communication begins inside the plant and extends to every research lab we serve. Customers may request technical details, audit trails, or speak directly with our production engineers—a level of access we stand behind to build trust and support repeat innovation. Gone are the days of source secrecy or missing batch records. Some of our oldest partners even tour the facility to review our processes on-site. We welcome outside scrutiny because it sharpens our standards and tracks changing needs among our growing customer base. Every improvement to our Phenol Red Sodium Salt product line stems from this open-door approach; it keeps our methods current and our reputation strong.
The value of Phenol Red Sodium Salt endures as research and production edge into new territories: regenerative medicine, automated screening, point-of-care devices, and closed-system bioprocessing. In each new field, old habits fade away and indicators play a more prominent role in fail-safes and error detection. Experienced users recognize the value of dyes that tell the truth at a glance, sparing teams from costly instrument recalibrations and sample reruns. Our ongoing collaborations with technology developers draw on decades spent learning what works under real-life lab pressures. We see fresh challenges emerging every year, and our factory floor remains ready to adapt and respond.
Building a reputation in chemical manufacturing takes more than filling jars; it takes self-discipline, openness, and a daily drive for improvement. Phenol Red Sodium Salt may not draw as much attention as some high-profile reagents, but its impact runs deep—quietly keeping samples on track, upholding lab safety, and backing up experimenters with reliable color cues. We know what goes into each bottle because we’ve handled every step ourselves, listened to the field’s feedback, and faced the risks and rewards of holding total responsibility. Every decision, from raw material purchasing to quality release, builds on the promise we make to our professional peers: what we ship is ready to work as hard as those who use it.
