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HS Code |
266077 |
| Name | Orange G |
| Cas Number | 1936-15-8 |
| Molecular Formula | C16H10N2Na2O7S2 |
| Molar Mass | 452.37 g/mol |
| Appearance | Orange to yellow powder |
| Solubility In Water | Soluble |
| Melting Point | Decomposes |
| Synonyms | Acid Orange 10, C.I. 16230 |
| Ph Range For Color | 2.0 - 4.4 (color transition from orange to yellow) |
| Chemical Class | Azo dye |
| Uses | Biological stain, pH indicator, dye for textiles |
| Storage Conditions | Store in a cool, dry place, protected from light |
| Hazard Statements | May cause skin, eye, and respiratory irritation |
As an accredited Orange G factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Orange G is packaged in a 25g amber glass bottle with a tightly sealed screw cap, labeled with hazard and identification information. |
| Shipping | Orange G should be shipped in tightly sealed containers, protected from light, moisture, and incompatible materials. It must be labeled as a laboratory chemical and handled in accordance with relevant safety regulations. Shipping should comply with local and international transport guidelines for chemicals, including proper documentation and hazard communication if required. |
| Storage | Orange G should be stored in a tightly sealed container in a cool, dry, and well-ventilated area. Protect it from moisture, heat, and direct sunlight. Keep away from incompatible substances such as strong oxidizers. Properly label the storage container and ensure it is placed in a secure location, following all relevant safety regulations and handling procedures for laboratory chemicals. |
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Purity 98%: Orange G with 98% purity is used in histological staining protocols, where it provides precise and consistent cytoplasmic coloration. Molecular weight 452.38 g/mol: Orange G with a molecular weight of 452.38 g/mol is used in protein electrophoresis, where it enables sharp and distinct protein band visualization. Particle size <10 microns: Orange G of particle size less than 10 microns is used in textile dyeing, where it ensures uniform color dispersion on fibers. Melting point 215°C: Orange G with a melting point of 215°C is used in heat-intensive industrial marking, where it maintains color stability during processing. Stability temperature up to 120°C: Orange G stable up to 120°C is used in papermaking coatings, where it resists color degradation at elevated drying temperatures. Aqueous solubility 25 g/L: Orange G with an aqueous solubility of 25 g/L is used in laboratory reagent preparation, where it enables rapid solution formation and homogeneous mixing. pH range stability 4-8: Orange G stable in pH range 4-8 is used in diagnostic strip manufacturing, where it ensures long-term color fidelity during storage and use. Viscosity grade low: Orange G with low viscosity is used in ink formulations, where it enhances flow characteristics for precise printing applications. Lightfastness rating 6: Orange G with a lightfastness rating of 6 is used in external labeling, where it maintains color visibility under prolonged light exposure. Absorbance peak at 478 nm: Orange G with an absorbance peak at 478 nm is used in spectrophotometric assays, where it allows accurate quantitative measurements. |
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Sometimes products in science circles pick up a reputation they struggle to live up to in the real world. Orange G is not one of those. This little bottle often sits at the edge of stained glassware and well-used benches, yet its role stretches further than folks might guess at first glance. I remember first meeting Orange G in a cramped undergraduate lab, its intense orange color standing out on the shelf packed with all sorts of mystery. People gravitate toward flashy new reagents, but Orange G has never quit doing its job across decades of classroom and research routines.
So what does Orange G actually do? On paper, it’s an azo dye, often called a tracking dye, and known to chemists by the name and the chemical formula: C16H10N2Na2O7S2. Many will spot it in gel electrophoresis protocols, especially for RNA work or SDS-PAGE. This orange powder dissolves into a vivid, unmistakable liquid. It doesn’t just offer a splash of color. The real trick is how Orange G helps users judge the timing of their molecular separations: the dye travels ahead of most nucleic acids and proteins, signaling when to stop the current before the samples run away off the gel. In the day-to-day of research, little cues like these spare hours of rework.
The molecular weight of Orange G (about 452.37 g/mol) means it keeps things simple in the gel. While heavier tracking dyes might slow down or mask some bands, Orange G plays a background role, running swiftly toward the front. I still remember the difference it made: the first time I saw Orange G zip ahead of smaller DNA fragments, I understood why instructors favored it in the teaching labs—a clean marker that won’t overlap with the bits you actually care about.
Comparing Orange G to other tracking dyes opens up some practical lessons. Bromophenol blue and xylene cyanol each leave their own mark—literally and figuratively—on a gel, but sometimes they bring more baggage than help. Bromophenol blue travels slower and often crowds around fragments in the 300 bp range. For those troubleshooting faint or overlapped bands, it isn’t much help. Xylene cyanol sits at a spot between Bromophenol blue and Orange G, providing a reference point somewhere in the middle.
Orange G’s main advantage comes from simplicity and predictability. Gels run with Orange G tend to look cleaner because the dye moves past the fragments of interest early on. That means you get a better sense of where your precious samples are without worrying about contamination or smearing. For anyone who’s spent anxious minutes squinting at a poorly resolved gel, that little difference means less wasted effort and fewer messy repeats.
Back in my graduate days, I watched newbies load Orange G alongside much pricier markers. The fancy stuff promised crisp, fluorescent bands and next-level visualization, but I saw colleagues burn through their budgets and still end up misjudging gel stops. Orange G, with its lower price and stable chemistry, got the job done time and again. It held up even after long months on the bench, outlasting competitors that needed careful storage or frequent replacement.
Years later, in professional labs where cost always mattered, Orange G offered a comfort zone. Teams juggling multiple experiments valued tools that seldom broke the routine. Nobody needed a reminder to order more Orange G because it lasted so long—an underrated perk in places always teetering on the edge of running out of the basics.
I’ve met technologists in diagnostic labs who trust Orange G in protocols for running quick checks on extracted nucleic acids. In settings where timing and accuracy can affect a diagnosis, the dye’s predictability reduces headaches. Folks can rely on Orange G’s pace across agarose or acrylamide gels, knowing exactly when to halt the process and snap a picture. That sort of reliability is rare in a world of ever-changing reagents and shifting standards.
A typical Orange G product comes as a fine, deep orange powder, shipped in dark bottles to protect from light-induced fading. Most labs prepare a 0.05% to 0.2% solution in distilled water or loading buffer, depending on need. No special handling gear proves necessary in a well-ventilated workspace; gloves and basic care suffice. Orange G won’t stain glassware like some stubborn dyes, so cleanup doesn’t become a chore after each protocol.
As a powder, Orange G sits stable at room temperature, surviving months on a shelf without losing potency. I’ve seen bottles last across terms in teaching labs, and I’ve mixed up fresh solutions on the spot with no hint of clumping or mysterious precipitation. A small spatulaful delivers vivid color to a 100 mL flask, ready for pipetting with little drama. The powder absorbs quickly, so there are no drawn-out waits by the water bath.
Tracking dyes often seem interchangeable—at least to those skimming protocols. The reality looks more nuanced in practice. Bromophenol blue and xylene cyanol can create visual confusion with DNA ladders or experimental samples. In teaching settings, mistakes pile up fast when newcomers mix up which band belongs to which marker.
Orange G stays out of the way, moving through the gel in front of nearly everything else, especially DNA. For a novice, one glance at the bright orange stripe lets you know it’s time to flip off the power and start staining. The relative migration speed can save anxiety as your samples head toward the gel’s edge. Over time, you learn to trust that Orange G means what it signals—no guesswork required.
Safety rightly matters to anyone handling dyes in a lab, and Orange G scores high marks in this department. While any chemical warrants respect, Orange G lacks the high toxicity of ethidium bromide or some modern fluorescent markers. Its main risks come from inhalation or eye contact if handled carelessly as a dry powder. Gloves, standard lab glasses, and a bit of care make safe use simple. In busy research spaces, that peace of mind lets folks focus on results and teaching, not on racing to the eyewash.
In terms of environmental impact, Orange G outperforms other tracking aids by not binding tightly to glassware or plastics. Routine washing removes faint stains left by the dye. Facilities handling heavy-duty stains or markers appreciate not having to deal with strong solvents or elaborate neutralization steps. As someone who cleaned a lot of beakers, I always sighed in relief when a project called for Orange G instead of a more stubborn dye.
Labs run on tight funds, and Orange G rarely breaks the bank. You don’t see fake scarcity pricing, and resupply doesn’t require months of planning. Small research groups and underfunded teaching programs praise Orange G for lasting through countless experiments. I once watched a single small bottle hold out across a full term, helping students through hundreds of practice gels. That sort of value keeps practical learning alive in places where every dollar has a job.
By sticking to basics, Orange G avoids the expense and supply headaches that surround newer fluorescent dyes. You won’t get high-tech readouts, sure, but you get consistency: every run, every result, just as expected. For routine teaching, daily diagnostic rounds, or method development, that simplicity saves a lot of hassle and wasted supplies.
No product hits every mark. Orange G, while reliable, offers no fluorescent signature. For those chasing ultra-sensitivity, like tiny bits of DNA in high-profile clinical tests, fancier markers outshine it. But in standard runs, Orange G’s visibility works well under room lights, so even folks in resource-strapped situations can confirm migration patterns before committing to extra steps. I’ve known teams who supplement Orange G with other markers for special cases. Blending proven tools with newer tech often gets the job done, with no single product promising miracles.
Storage rarely brings surprises. I remember one hot summer with lab temperatures dancing just below 30°C. Orange G sat on the desk, unchanged, no sign of caking or fading. This reliability makes Orange G attractive in tropical research settings or places with inconsistent refrigeration. Avoiding the stress of spoiled supplies can mean more confident planning and fewer last-minute purchases.
Some users report Orange G’s color can fade in direct sun after long exposures, so best practice keeps it capped and out of windows. On the odd occasion more concentrated colors are needed, adding an extra pinch rarely introduces trouble—no foam, no weird odors, no impact on downstream stains or band sharpness. In busy environments, little details like that mean spending less time worrying about contamination and more on the research itself.
One lesson stands out after many years relying on basic reagents like Orange G: Small, predictable tools build trust and let teams focus on the work that truly matters. Even now, as labs get distracted by increasingly complex workflows and products, Orange G stays true to its purpose. I’ve watched students beam when their first gels ran clean, free from clutter or smeared bands. That learning moment, unencumbered by technical setbacks, leaves a lasting impression—the kind that can shape young scientists and seasoned pros alike.
Colleagues in clinical, teaching, and industrial labs often share the same advice: Don’t overlook the basics. Orange G may lack the glitz of fluorescence or the technical shine of high-tech stains, but year after year, it keeps experiments on track. When I ask researchers about dyes, the same stories come up—Orange G’s ease of use, its clear visual cue, and barely-there price tag. These practical gains drive loyalty more than marketing promises ever could.
Orange G’s stubborn simplicity does not excuse lazy habits. Regular safety checks, clear labeling, and wise storage go together with best practice. I tell students starting out: Always label bottles with date of preparation, and don’t let shared stocks turn into mystery mixtures. Use clean tools to scoop, and keep powder stocks away from water sources; even small splashes can lead to clumping over time.
To keep Orange G in top shape, shield it from humidity and direct sunlight, and make smaller working solutions for day-to-day use. In larger labs, splitting bulk orders into individual-use vials cuts down on contamination and waste. Spreading simple protocols—how to dissolve, handle, and dispose of Orange G responsibly—reduces accidents and makes sure nobody is caught off guard during inspections.
For users in less-resourced places, Orange G answers the call for reliability. Schools and field clinics don’t need expensive imaging equipment or elaborate storage. The vibrant orange stripe’s appearance on a simple agarose gel confirms method success even in the most basic setups. In outreach programs or teaching demonstrations, that accessibility turns abstract protocols into hands-on learning.
It’s easy to chase what’s new and overlook the value in old standbys, yet nobody questions the feeling of relief when a simple tool saves a day’s work. Orange G earns steady praise not just for what it is, but what it lets people do—finish more experiments, spend less, make fewer mistakes. I’ve seen bright-eyed students gain confidence after mastering a straightforward gel run with Orange G; that sense of progress spurs curiosity and deeper research more than any flashy gadget ever could.
In the end, Orange G is equal parts legacy and promise. It keeps science grounded in hands-on reality. For all the emerging innovations, sometimes progress looks less like a revolution and more like a tool that has stood the test of time, helping novices and experts produce results with calm confidence. Orange G delivers that—run after run, semester after semester, and no sign of slowing down.