Anhui Liwei Chemical Co., Limited
Products

Bromophenol Blue, Sodium Salt


    • Product Name Bromophenol Blue, Sodium Salt
    • Alias Bromo Blue
    • Einecs 238-434-3
    • Mininmum Order 1 g
    • Factory Site Lingwu, Yinchuan, Ningxia, China
    • Price Inquiry sales2@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    480245

    Product Name Bromophenol Blue, Sodium Salt
    Chemical Formula C19H9Br4NaO5S
    Molecular Weight 669.96 g/mol
    Appearance Dark purple or violet powder
    Solubility In Water Soluble
    Ph Indicator Range 3.0 - 4.6
    Melting Point Undetermined / decomposes
    Storage Temperature Room temperature
    Cas Number 34725-61-6
    Iupac Name 3',3'',5',5''-Tetrabromophenolsulfonphthalein monosodium salt
    Ec Number 252-169-7
    Lambda Max 590 nm (in water)

    As an accredited Bromophenol Blue, Sodium Salt factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Bromophenol Blue, Sodium Salt is supplied in a 25g amber glass bottle, clearly labeled with chemical name, purity, and safety warnings.
    Shipping Bromophenol Blue, Sodium Salt is shipped in tightly sealed containers to prevent contamination and moisture absorption. It should be packaged in compliance with local and international regulations, labeled appropriately as a laboratory chemical. During transit, the substance must be protected from heat, direct sunlight, and incompatible materials to ensure stability and safety.
    Storage Bromophenol Blue, Sodium Salt should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers and acids. Protect it from moisture and direct sunlight. Store at room temperature, avoiding excessive heat. Ensure containers are clearly labeled and kept in a secure area to prevent accidental exposure or spills.
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    Competitive Bromophenol Blue, Sodium Salt prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.

    We will respond to you as soon as possible.

    Tel: +8615380400285

    Email: sales2@liwei-chem.com

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    Certification & Compliance
    More Introduction

    Bromophenol Blue, Sodium Salt: Production Insights and Practical Commentary

    Understanding Bromophenol Blue, Sodium Salt in the Manufacturing Landscape

    The world of pH indicators includes a handful of true workhorses, but few carry the history or practical value of Bromophenol Blue, Sodium Salt. Our plant has specialized in this compound for years, handling every phase from synthesis to the final batch checks. The model popular with most users is the dye’s sodium salt form — preferred for its quick dissolution in water and consistent performance across wide applications. The vibrant transition from yellow to blue across pH 3.0 to 4.6 makes this salt predictably reliable for laboratory work, especially in buffering and gel electrophoresis setups.

    Few products leave the drying vats as cleanly as Bromophenol Blue, Sodium Salt. Years of tweaking our crystallization protocols have made purity levels of 98.5% or higher routine, with off-white to pale blue powders as the typical appearance. Sodium salt stabilization stands up well to ambient humidity. Harsh wet weather, though, might require extra care in storage for moisture-sensitive operations. In our hands, the salt stays free-flowing and clump-free even after weeks in regular climate zones.

    Through years on the production floors and in close contact with research customers, certain issues come up on repeat. Questions about batch-to-batch variability, longevity, or how this grade stacks up against acid-form bromophenol blue come through often. From manufacturing, we notice sodium salt avoids the gradual caking and reactivity issues plaguing the acid form. The extra sodium means it dissolves in water within seconds under mild stirring, cutting prep time down for labs that rely on consistency from bottle to bottle. Spectral data stays true across production runs, with absorbance maxima matching published data at 590 nm in basic media and 430 nm under acidic conditions.

    The Production Perspective: Scale, Quality, and Challenges

    Making a dependable dye requires more than tossing reactants in a vessel. The heart of our process lies in temperature control and solvent handling. Even a ten-minute slip at the sulfonation stage can throw off color yield and purity. Our reactors stay under careful watch with continuous in-line UV-Vis checks for impurity profiles at each stage. The sodium salt form poses fewer filtration headaches compared with other pH indicator dyes. It tends not to stick to filter cakes, keeping our throughput steady during peak orders.

    Out on the floor, the main challenge remains in meeting peaks of seasonal demand from academic labs and diagnostic kit producers. We run right up to capacity during graduation seasons or outbreak response drives, as Bromophenol Blue, Sodium Salt remains a staple for DNA and protein gel tracking. Fresh batches carry lot traceability going back to our raw aniline stocks, so questions on contamination and regulatory compliance go straight to the technicians who mixed, processed, and tested each run. This level of direct control has kept our product lines clear of recalls or customer complaints for several years.

    Feedback from industrial users consistently points to the need for fine particle size and the avoidance of residual solvents. We have responded by adjusting our drying and milling protocols — air-jet milling, followed by forced-convection drying, speeds up evaporation without degrading the chromophore. On random testing, we find that the sodium salt form leaves almost no trace solvents, even under rigorous gas chromatography scrutiny. Users handling eco-sensitive diagnostics or high-stakes separations benefit from the peace of mind this extra processing delivers.

    Practical Use Cases: Lessons Learned in Application

    Bromophenol Blue, Sodium Salt plays a role in both classic and niche applications. In the lab, researchers prefer it for routine pH monitoring and as a tracking dye in polyacrylamide and agarose gel electrophoresis. Its color shift is easy to read by eye, so students and professionals both find it accessible for tracking progress. Out in clinical settings, its predictability during sample running protects assays from repeat errors. Over the years, our experience has taught us that trace iron or copper can dull its transitions. Investing in extra chelation steps at the pigment purification stage has slashed complaints about faded endpoints.

    Some users still favor the acid form, attempting to economize or seeking slightly finer granularity in chromatography, but our sodium salt repeatedly proves easier on workflows. Its immediate solubility slashes prepping time for high-throughput runs, and stability during shipping outperforms the base dye in humid environments. For any laboratory facing issues with caked indicators or off-color batches, the difference becomes clear after just a few weeks of side-by-side use.

    Veterans in electrophoresis setups also appreciate that the sodium salt lets them mix master stocks days in advance, free from worries over unpredictable precipitation. Clinical customers running sensitive tests for infection markers confirm that low-background reagents make their data easier to interpret. Purity levels well above the old technical standards of the 1970s assure residue-free, crisp lanes in gel images.

    We hear from food science labs as well, where the color range offers quick QA checks in manufacturing plants or R&D kitchens. Our feedback logs suggest that the sodium salt drastically reduces instance of clouding or off-tastes compared to acid dye carries, which matters in direct food applications or indirect process monitoring. Regulatory compliance is easy to maintain, since all synthesis passes recurring checks for banned aromatic impurities.

    Comparative Perspective: Sodium Salt versus Other Dyes

    Choice in indicators goes beyond price. In analytical routines that permit little downtime, the sodium salt’s fast dissolve and stability ranks it above Methyl Orange and Coomassie dyes in our surveys. Even compared to its own acid form, the sodium salt’s edge in solution clarity and lack of residue appeals to technicians who depend on consistent visibility through extended gel runs.

    We have compared the sodium salt to direct competitors on standard diagnostic runs, noting time savings worth several hours in busy weeks. Acid forms in bulk sometimes undercut it on cost, but those savings vanish once users factor in solution-making time, extra filtration, and batch failures from age or moisture. The sodium salt’s shelf life outpaces much older product lines, benefitting users in climates with frequent humidity swings or temperature outages.

    For those working in biotechnology or proteomics, experience shows that dye purity can make or break sensitive detection. Trace contamination in the sodium salt version runs an order of magnitude lower than the acid form’s. Technicians prepping high-sensitivity gels for protein detection consistently report sharper bands and lower background haze when switching to well-made sodium salt batches processed under our upgraded lines.

    Over the years, partnering directly with large biotech firms has taught us about the downstream impacts of small mistakes. Extra salts or variable pH drifts can hamper gel resolutions — an issue we have minimized by strict process controls from synthesis through drying. We rarely see customer complaints about stuck end points or off-color solutions now, a marked improvement from more generic indicators on the market.

    Addressing Typical Concerns and Troubleshooting in Use

    Repeat questions about storage keep coming in: whether Bromophenol Blue, Sodium Salt needs refrigeration or can hold up to less than ideal conditions. On our end, the stabilized sodium salt tolerates standard benchtop storage well for up to three years. In field labs or shipping zones with poor packaging, we have suggested extra silica desiccants. Most users handling moderate volumes see no change in dye performance even after multiple container openings.

    From direct batch audits, the most common source of deviation comes from mis-weighing or use of unfiltered water during solution prep. Despite the forgiving nature of the sodium salt, contaminated water can cause dull color responses or slow dissolution. Our ongoing outreach to customers includes updated prep guidelines, and our technical team fields calls about best practices nearly every week. By rooting out these basics, users tend to record more accurate pH endpoints and quicker troubleshooting.

    Factory personnel receive continuing training in handling cross-contamination, especially on shared lines. In high-volume production, trace carryover from other dyes just isn’t an option. Regular audits keep these standards high, so users in sensitive pharmaceutical or biotech projects never face unwanted interference. These investments pay off with consistently positive reports on performance in critical applications like blood serum analysis or vaccine component testing.

    Supporting Sustainability and Regulatory Trends

    Producing indicator dyes is no longer just about technical excellence; environmental compliance rises in user priorities every year. Our plant has adopted closed-loop solvent recovery and switched to less hazardous reagents for certain precursor steps. We meet not only national but also international standards for wastewater and byproduct minimization, verified every audit cycle by independent inspectors.

    Batch samples heading for export trace their entire production chain, with documentation for every raw material and process step. Our internal quality control matches or exceeds requirements set by many regulatory authorities. In recent years, we have seen pharmaceutical and medical device manufacturers turn to sodium salt indicators after facing regulatory pushback over impurities or waste outputs from older dye technologies. The transition to our sodium salt bromophenol blue has simplified compliance for several multinational clients entering new markets.

    We accept that maintaining these standards means investment in regular process reviews, equipment upgrades, and staff retraining. To us, that’s simply the cost of producing a dye product trusted in research and regulated clinical protocols alike. Our teams work closely with customers when new certifications or supplier reviews arrive; records and certifications stand ready for detailed audits whenever required.

    Seeing the Product through to Its End User

    Years in manufacturing show a different side of chemical supply than trading or third-party distribution. We see each batch through from sourcing to shipping, building relationships with labs, universities, hospitals, and industry. That direct conversation helps us cut down on problems; a query about “dull” color can route back to an upstream water source or a packaging flaw spotted before widespread shipment. Feedback cycles come fast, keeping our process nimble, and we take pride in every resolved customer issue that helps us refine the next production run.

    Unlike bulk trading outfits, our connection to the end user runs deep. Visiting client labs, hearing students walk through their protocols, and taking calls from senior lab managers all feed back into our continuous improvement cycles. If customers in remote locations need assistance with storage or blending at altitude, our technical staff shares practical solutions drawn from years of real-world troubleshooting, not script-driven responses or abstract documentation.

    Some of our longest-standing users point out that reliability, not just price, keeps them returning batch after batch. The sodium salt form’s consistency over the years has carved out a spot in routines where mistakes cost more than the dye itself. Tracing product lots, refining purity, and guaranteeing on-time supply builds a trust that runs deep in the scientific community.

    The Road Ahead: Adapting and Evolving Our Bromophenol Blue, Sodium Salt Line

    Change remains constant as research priorities and analytical techniques evolve. Our process now supports higher-purity grades to match the tightening requirements in genomics and diagnostics research. Each incremental gain in quality control — whether through UV-Vis scanning, ultra-low metal content, or improvements in packaging films — grows from conversations with actual users and adapting production in-house.

    Shifting away from harsh process solvents and boosting energy efficiency in our reactors has trimmed our environmental footprint and reduced workplace hazards. As customer audits become more granular and data-driven, our lab teams document every change, making it easier for clients to meet the transparency and traceability demands baked into many new regulatory frameworks.

    We consider ourselves more than dye producers — we are a direct partner for innovation in analytical chemistry. Instead of waiting for problems to escalate to recalls or news headlines, our teams track trends and shift focus before issues impact customers. Whether designing more robust packaging for field use, improving shelf life for remote clinics, or developing formulations for emerging diagnostic platforms, our production lines remain tuned to real-world feedback.

    Every bottle of Bromophenol Blue, Sodium Salt leaving our plant reflects a cumulative process of learning, listening, and adapting. As more industries fold modern QC and regulatory scrutiny into their daily operations, supply chain trust and reliability become as valued as technical purity. We aim to support each customer, old and new, with a product lineage rooted in both tradition and innovation — after all, quality in chemical manufacturing grows strongest through steady attention, not shortcuts or intermediaries.