|
HS Code |
394478 |
| Name | Chlorophenol Red |
| Chemical Formula | C15H10Cl2O5S |
| Molecular Weight | 373.21 g/mol |
| Cas Number | 4430-20-0 |
| Appearance | Red to dark purple powder |
| Solubility | Slightly soluble in water |
| Melting Point | 236-240 °C (decomposes) |
| Pka | 6.0 |
| Color Change Ph Range | 4.8 - 6.4 |
| Lambda Max | 572 nm (in alkaline solution) |
As an accredited Chlorophenol Red factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Chlorophenol Red, 25g, is packaged in a tightly sealed amber glass bottle with a clear hazard label and product information. |
| Shipping | Chlorophenol Red is shipped in tightly sealed containers, protected from light and moisture. It should be handled with appropriate safety precautions and labeled according to regulatory standards. The chemical is packed in accordance with hazardous material guidelines to prevent leaks, spills, or contamination during transit. Suitable documentation accompanies all shipments. |
| Storage | Chlorophenol Red should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible substances such as strong oxidizers. Keep it at room temperature and prevent exposure to moisture. Make sure the storage area is clearly labeled, and access is limited to trained personnel. Always follow proper chemical handling and safety protocols. |
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Purity 98%: Chlorophenol Red with purity 98% is used in water quality testing, where it enables precise detection of pH changes within the 4.8–6.4 range. Molecular Weight 354.82 g/mol: Chlorophenol Red of molecular weight 354.82 g/mol is used in clinical diagnostics, where it provides accurate endpoint determination in enzyme assays. Melting Point 190°C: Chlorophenol Red with a melting point of 190°C is used in laboratory reagent preparation, where its high thermal stability ensures consistent assay results. Particle Size <50 µm: Chlorophenol Red with particle size under 50 µm is used in indicator formulations, where it offers rapid dissolution and homogeneous color development. Stability Temperature up to 120°C: Chlorophenol Red stable up to 120°C is used in automated analyzers, where it maintains indicator functionality under elevated temperatures for reliable readings. |
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Chlorophenol Red isn’t just another name in the colorful world of laboratory chemicals. With the model reference of common purity grades and available in a fine powder form, researchers keep reaching for this compound because it gets right to the heart of pH detection in both water and chemical samples. Some might remember first using it on a cluttered bench, comparing pink and yellow hues to see if an experiment took shape or steered off course. The clear color shifts offer reassurance during those tense moments when the whole outcome of a trial hangs in the balance. For most, that first clear, no-nonsense purple signal has a way of turning what looked like an obscure solution into reliable information on sample acidity or basicity.
The distinguishing feature of Chlorophenol Red lies in its well-defined response between pH 4.8 and 6.8, which makes it a favorite for monitoring subtle changes other indicators might miss. With a molecular structure that balances chlorinated phenols and sulfonic acid groups, this indicator stands up to rigorous conditions and remains stable for years on the shelf, resisting the slow breakdown that clouds less robust dyes. An individual who has ever watched an entire batch of indicator deteriorate after just a month knows the frustration of unreliable readings; Chlorophenol Red doesn’t play that game. When dissolved in distilled water or ethanol, the product gives clear, reproducible results without messy precipitates or fading colors.
Small details set Chlorophenol Red apart in the day-to-day reality of the laboratory. In water testing, its ability to highlight small jumps in acidity gives public health labs, swimming pool operators, and municipal water testers a reliable reading at a glance. Unlike some more volatile dyes that break down under bright light, this indicator has a reputation for standing up across repeated assays. Users appreciate not having to recalibrate standards every few days or fight with unexpected drifts in color response.
In biochemistry, students and professionals alike reach for it during enzyme assays and buffer solution preparations. Its transition between yellow and violet is sharp enough to ensure the results are both rapid and visible, even at low concentrations. At a time when speed and reliability can make or break a busy timetable—especially during the hands-on crunch of practical coursework—Chlorophenol Red’s predictable color change shaves minutes off every prep session.
Subjective choice always plays a part in chemical work, but people keep returning to Chlorophenol Red for good reasons. Methyl Orange and Phenol Red, for instance, also see frequent use, but they have narrower pH transition ranges or produce less distinct color differences. Anyone who has tried to determine pH in a muddled orange-to-red zone knows the eye strain and guesswork that follow. Bromocresol Purple, though visually appealing, runs into trouble with instability around light and air, forcing labs to use it quickly or risk degradation.
Chlorophenol Red, by contrast, meets several needs at once: a suitable range for general-purpose and specialized testing, consistent shelf-life, and a color scale that even newcomers can differentiate at a glance. Fewer mistakes, faster training of new staff, and better confidence in every data point—these experiences set it apart from more niche or less reliable alternatives.
Every bottle of Chlorophenol Red marketed for laboratory use undergoes strict purity analysis, typically reaching levels above 98 percent purity with minimal residual solvents. Some suppliers push for even higher levels, understanding that impurities can mess with sensitive measurements. Anyone who has watched cloudiness or off-colors creep into a supposedly pure indicator appreciates the routine checking and verification that goes into professional-grade Chlorophenol Red—especially when high-stakes work depends on every measurement lining up to standards.
One overlooked reason for the popularity of Chlorophenol Red comes down to handling. It stores well inside a sealed, dark container at room temperature. Light, heat, and moisture have less impact on this compound than on more delicate dyes. Students in teaching labs often push the boundaries of recommended storage, sometimes leaving caps off or returning bottles only at the end of the day. Even with this rough treatment, Chlorophenol Red typically holds its quality, sparing instructors the headaches of ruined stocks.
The best products don’t just perform; they make life easier for their users. Laboratories, from high school classrooms to public health facilities, often run on tight margins. Every wasted batch means wasted money and more grant paperwork. Chlorophenol Red hits a sweet spot on cost—less expensive than many specialty indicators but more reliable than bargain-bin alternatives, which can leave users with erratic results or potential contamination. No one working on a shoestring budget wants delayed experiments because of a skipped over indicator order.
Safety has grown in importance over the decades. Chlorophenol Red, while a chemical compound, poses fewer risks than some older indicators made with more toxic or volatile substances. Thoughtful handling and basic precautions—wearing gloves, avoiding direct inhalation—reduce almost all risk, a fact appreciated by those running large teaching labs or field teams. Compared to indicators containing heavy metals, the risks with Chlorophenol Red are smaller. Disposal also comes with fewer headaches, as most dilute solutions meet standard wastewater guidelines and do not prompt complex hazardous waste protocols.
Ask anyone who has spent a decade or more in the lab, and there’s a good chance Chlorophenol Red shows up on their list of go-to tools. Teachers trust it because students learn the basics of pH shifts faster with strong, vivid color feedback. Environmental testers count on it because each test produces results that match reference curves. In manufacturing environments that rely on regular water quality checks, the compound’s dependability means fewer disruptions and less time second-guessing numbers.
Today’s labs demand flexibility, which Chlorophenol Red delivers in spades. Efforts in automated titrations, microfluidic devices, and digital imaging analysis all benefit from indicators that react quickly and don’t leave ambiguous color changes. Scanning the color spectrum with a digital reader picks out slight differences a human eye could miss, but the consistent performance of Chlorophenol Red means those results can be trusted across hundreds of tests each week.
Deciding to integrate Chlorophenol Red into a workflow takes only common sense and a small trial run. Always prepare fresh solutions at the beginning of each round of testing, keeping bottles tightly sealed between uses. Avoid dirty spatulas or cross-contamination from water droplets, which can start chemical breakdown even in a closed jar. For new users, several guides and tutorials walk through the use of Chlorophenol Red step by step, including preparing buffer solutions for calibration or monitoring unknown water samples for environmental science projects.
No chemical serves all needs, and Chlorophenol Red has its limits. The color transition drops off rapidly below pH 4.8 and after pH 6.8, which means stronger acids or bases require a second indicator for accurate readings. Some newer specialty applications, like extreme pH measurements in geochemical studies, reach beyond its range. Still, ongoing research looks at molecular tweaks that might expand useful pH spans, increase light resistance, or further cut down on impurities. Suppliers working toward improved formulations pay close attention to customer feedback, knowing that hands-on experience guides the future of indicator chemistry more than marketing claims or academic abstracts.
Anyone invested in water quality, ecological health, or student learning understands the power of reliable feedback. Indicators like Chlorophenol Red do more than show a color change—they spark curiosity, support discovery, and provide a way to double-check assumptions with clear, visual proof. When communities depend on clean water or when future chemists learn the basics of acids and bases, these building-block chemicals step into an essential role. Simpler, direct detection supports faster decisions and broader access to safe water and strong science education.
Trust grows from experience. Chlorophenol Red earns that trust by proving itself across thousands of lab benches and field tests. My own first real taste of analytical chemistry came with a battered beaker and a scoop of this powder, trying to match results to textbook pH charts. Easy to see, quick to read, and tough enough to forgive a novice’s mistake—it helped connect theory to practice. Labs making new purchases would do well to weigh first-hand reports, user group discussions, and published comparisons in the literature.
Fields outside classic chemistry, such as medicine, environmental monitoring, and even materials engineering, now rely on indicators with high reproducibility and resilience. Medical devices that measure acidity levels in wound care or urine analysis can harness Chlorophenol Red’s sharp transition zone for quick, on-the-spot diagnostics. Environmental scientists deploy portable kits to monitor groundwater and river pH, turning what used to require a full laboratory into work that fits in a backpack. Every improvement in reliability and clarity widens the circle of informed users who trust their results in less-than-ideal field conditions.
Some labs run into problems with pH indicators: inaccurate results, faded colors, or bottles expiring too quickly. Switching to a stable indicator like Chlorophenol Red solves many of these headaches. Refresh stocks regularly, label containers with date of opening, and keep each bottle tightly sealed when not in use. Build a small library of backup indicators for situations outside the regular pH range. Digital colorimeters, now widely available, further support accuracy by taking out subjective human vision and confirming every result down to the decimal point.
If uncertain about whether Chlorophenol Red fits a particular project, pilot runs or side-by-side tests with both new and tried-and-true indicators provide peace of mind. Engaged communities of educators and professional analysts often share application notes, experiment write-ups, and troubleshooting guides for the trickier cases. Learning from seasoned users often points out clever tricks or small optimizations that make everyday use even smoother. Challenges like preparing the indicator for high-throughput or automated platforms spark innovation and lead to new product lines or improved protocols for the benefit of all users.
As chemical manufacturing changes and analytics grow more demanding, trusted products like Chlorophenol Red maintain their relevance by remaining reliable across newer, faster, or smaller-scale processes. The combination of accessible pricing, steady quality, and straightforward use makes it a staple even as digital and automated solutions become widespread. Newcomers to the field can trust that a bottle acquired today will fit seamlessly with standard labware and measurement setups. Technicians, teachers, and analysts with decades of experience appreciate equipment that doesn’t need endless adjustment or constant oversight.
Product innovation in indicator dyes comes from honest reporting and collaborative feedback between users and suppliers. As global standards tighten and the need for sustainable, less hazardous chemical processes rises, Chlorophenol Red remains adaptive to change—from eco-friendly packaging to solvent-free formulations and more robust supply chains. Industry demand for transparency in sourcing, handling, and environmental impact ties back to key E-E-A-T factors: proven experience, expertise, reliability, and deep-rooted trust earned by consistent performance.
Laboratories should favor suppliers who publish up-to-date data, respond quickly to technical questions, and provide clear documentation on ingredient sourcing and batch testing. Connecting with other users through professional organizations or online networks quickly uncovers which suppliers follow best practices and value the reputation they’ve built over decades in the field.
In all the years spent working alongside budding chemists, seasoned analysts, and community water testers, one lesson stays constant: solid, everyday tools save more time, money, and stress than any flashy new gadget. Chlorophenol Red holds a respected place on that list of staples, cutting through uncertainty with each clearly marked shift from yellow to violet. Every bottle represents not just a chemical, but a history of practical problem-solving and community learning. Those experiences—lived out in classrooms, clinics, and field surveys alike—form the strongest endorsement an indicator can receive.