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HS Code |
890425 |
| Chemical Name | Yellow Phosphorus |
| Chemical Formula | P4 |
| Molecular Weight | 123.88 g/mol |
| Appearance | Waxy, yellowish-white solid |
| Odor | Garlic-like smell |
| Melting Point | 44.1°C |
| Boiling Point | 280°C (sublimes) |
| Density | 1.823 g/cm³ |
| Solubility In Water | Insoluble |
| Flammability | Highly flammable; ignites spontaneously in air |
| Toxicity | Highly toxic; can cause severe health effects |
| Storage Conditions | Must be stored under water or inert gas |
| Cas Number | 12185-10-3 |
As an accredited Yellow Phosphorus factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Purity 99.9%: Yellow Phosphorus with 99.9% purity is used in the synthesis of organophosphorus compounds, where high purity ensures optimal yield and minimal byproduct formation. Melting Point 44°C: Yellow Phosphorus with a melting point of 44°C is used in controlled red phosphorus production, where consistent melting facilitates homogeneous conversion. Particle Size < 150 µm: Yellow Phosphorus with particle size less than 150 micrometers is used in pyrotechnic formulations, where fine particles ensure rapid and uniform combustion. Storage Stability at 20°C: Yellow Phosphorus exhibiting storage stability at 20°C is used in intermediate chemical storage facilities, where stable handling minimizes decomposition risk. Low Impurity Content (<0.05%): Yellow Phosphorus with impurity content below 0.05% is used in phosphoric acid manufacture, where low contaminants guarantee high-purity end products. High Reactivity Index: Yellow Phosphorus with a high reactivity index is used in matchstick production, where enhanced reactivity ensures reliable ignition performance. Moisture Content < 0.1%: Yellow Phosphorus with moisture content below 0.1% is used in semiconductor processing, where minimal moisture prevents unwanted hydrolysis reactions. Encapsulated Formulation: Yellow Phosphorus in encapsulated formulation is used in laboratory reagent kits, where encapsulation provides safer handling and extended shelf life. Bulk Density 1.82 g/cm³: Yellow Phosphorus with a bulk density of 1.82 g/cm³ is used in automated feed systems for industrial synthesis, where precise density enables accurate dosing control. |
| Packing | Yellow Phosphorus, 500g: Sealed in airtight metal container, labeled hazardous, with corrosion-resistant exterior and clear yellow warning labels. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): Yellow Phosphorus is packed in steel drums, loaded securely in 20-foot containers to ensure safe transport. |
| Shipping | Yellow Phosphorus must be shipped under water or inert gas to prevent contact with air, which can cause spontaneous ignition. It's packed in airtight containers, clearly labeled as toxic and flammable. Transportation follows strict regulations for hazardous materials, using designated vehicles and documentation to ensure safety and compliance with international shipping standards. |
| Storage | Yellow phosphorus must be stored under water or in inert gases within tightly sealed, non-metallic containers to prevent its exposure to air, as it ignites spontaneously in oxygen. The storage area should be cool, dry, well-ventilated, and away from heat sources, oxidizing agents, and flammable materials. Containers should be clearly labeled and regularly checked for leaks or degradation. |
| Shelf Life | Yellow phosphorus has an indefinite shelf life if stored under water or inert atmosphere, away from light, heat, and air exposure. |
Competitive Yellow Phosphorus 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 sales3@ascent-chem.com.
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Tel: +8615365186327
Email: sales3@ascent-chem.com
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Producing yellow phosphorus has always been about more than reactions and refining. Over decades, we have built our knowledge by standing right inside the heat, watching the electric arc furnaces do their thing, monitoring every fluctuation and spark. This product isn’t just part of a supply chain. Its quality signals discipline in safety and precision from the very first step of the process. Customers talk about specifications—white-yellow appearance, purity over 99.9 percent, usually in solid sticks or lumps, often packed under water. These details matter, but so does what they actually mean for you who want consistent performance in every application—from pesticides to flame retardants and match manufacturing.
You spot yellow phosphorus by its pale yellow, sometimes translucent color. Our plant goes all-out to keep the color even. The real secret sits inside that consistent tint: well-controlled raw materials, stable electric currents, and no skimping anywhere along the chain. Keep it too moist or too dry and lumps start breaking down or sticking together. We’ve learned a lot about storage, shipping, and the hands-on steps needed to stop spontaneous ignition. Not every producer works to this standard; the market separates those who understand oxidation risk and those who just chase price.
Purity matters. In matches or chemical intermediates, heavy metals and residual arsenic leave real problems for downstream engineers and factories. We invest in proper separation—strong extraction with at least two raffinate stages—where others settle for a quick wash. That purification discipline means less risk for you, fewer interruptions, and less trouble with regulators. Our protocols cut contamination to below detectable limits for substances like arsenic, which builds trust with phosphorus trichloride makers and flame retardant manufactures.
We keep phosphorus white-to-yellow by controlling manufacturing depth and cooling speed. Most factories blend crushed phosphate ore, coke, and silica, then feed these into an arc furnace at close to 1,500°C. But handling the vaporized phosphorus separates experienced producers from paper factories. If vapors cool too slowly, you get harsh crystals harder to melt and dose, and sometimes slight red discoloration—an issue for matchstick and electronics-grade applications. We use water-jacketed condensers and multi-stage cooling to catch the vapor fast, smooth out the color, and avoid crystal growth that throws specs off.
Some competitors look for shortcuts, especially where regulations run looser. A few still pack phosphorus in drums with too little water coverage, leading to surface oxidizing or sticking between lumps. Every time a barrel arrives brown or pitted, that’s wasted money for the end user. We ship only with tested liquid seals, and offer custom drum sizing when buyers ask, including single-use steel containers with pre-load purge systems. For customers scaling production—whether in agrochemical synthesis or flame-retarded plastics—predictable handling means less downtime and safer workrooms.
Ask a match producer—yellow phosphorus acts as the feedstock for red and white phosphorus modifications. The safety precautions begin at our loading bays and follow into every downstream warehouse. For pesticides, our buyers rely on high-purity phosphorus to synthesize key intermediates for compounds like glyphosate and organophosphates. In flame-retardant chemicals, especially phosphorus trichloride and its derivatives, trace metals and off-color product can stop entire reactors or discolor final goods. Our focus reduces those shutdowns.
Not many chemical intermediates carry as much baggage as yellow phosphorus. Mishandling even a little means serious danger. That’s why real producers don’t just sell drums—they sell ongoing advice and technical backup. We spend real time with R&D customers, working through pilot-scale melting, dosing rates, and reaction vessel compatibility. Owners of older sites call us regularly to repair or upgrade storage and unloading setups, since too many older drums cause accidents.
Yellow phosphorus comes from a tight spot between white, red, and black grades. It melts easily and vaporizes long before any red or black phosphor. When buyers call about phosphorus, they’re often confused by supplier listings. Red phosphorus handles safer, but it doesn’t work for the same reactions, especially for trichloride or hypophosphorous acid synthesis. White or yellow flows quickly, which matters for batch charging and mixing in confined reactors. We produce yellow phosphorus to strict purity—not just color or consistency—but impurity content below a few parts per million, so no red dust or sticky residue gums up production lines.
Export controls track yellow phosphorus closely, since it can feed products with both industrial and military value. Suppliers lacking control systems risk market disruption. We’ve built traceability into every drum, bottle, and shipment, with compliance documentation ready for customs or end-users. Every time regulations shift, our plant adapts and updates the paperwork, never waiting for a customer to find out the hard way. Some dealers offer phosphorus without origin papers. We warn our partners that regulators crack down hard when these show up, and our logistics team double-checks all documentation for each consignment.
Fire isn’t just a theoretical risk with yellow phosphorus—it’s a lived fact for anyone moving, storing, or reacting it. Sometimes, new buyers hesitate at the strict handling rules, but we don’t cut corners. We counsel customers on what works in practice: thorough drum inspection at delivery, regular water level checks, and equipment upgrades like nitrogen-purged transfer lines for high-volume users. Our engineers help retrofit unloading stations, since many plants built before stronger safety rules forget that phosphorus eats through steel and misses most paints. We’ve built ours from custom non-reactive alloys and run annual corrosion checks.
Accidents make headlines, but they always begin as tiny lapses—one day without enough water, a blocked vent, or extra jostle on a loading dock. Over the years, we’ve seen how attention to detail saves lives and money. For critical applications, buyers send staff to our plant for hands-on training—how to pump, tap a drum, and test for leaks. Some try to save costs with off-spec phosphorus or questionable brokers; the incidents are almost always preventable. We urge buyers to work only with established manufacturers who have stood through volatile markets and regulatory changes.
Environmental concerns haven’t stayed outside our plant gate. Phosphate mining and phosphorus refining create significant byproducts—spend slag, offgas, and water run-off. We’ve invested in closed-loop water systems and proper gas scrubbing to keep emissions well under the local legal thresholds. Decades ago, waste gasses from phosphorus refining went straight into the air. After years of tightening compliance, we now trap and convert many of those byproducts for reuse on site or in other local industries. Responsible buyers ask for these details, knowing that regulatory pressure only increases.
Buying yellow phosphorus isn’t just a cost decision. Increasingly, downstream customers want to know how their raw materials were made, whether the site operates within emission permits, and if tailings end up damaging farmland or rivers. We built transparent systems for tracking batches—showing trace contaminants and treatment steps—so every buyer sees exactly what environmental footprint their raw materials carry. In more than one case, buyers have switched suppliers after reviewing how much pollution their previous source caused. We’re always working toward cleaner extraction, because it shows up in product stability, worker safety, and the long-term viability of our business.
Producing yellow phosphorus looks simple in textbooks—mix, heat, condense, and store. In practice, the smallest temperature swing or hiccup in feedstock purity can knock an entire run off specification. We test our phosphate ore at every delivery. If a shipment comes with too much fluorine or moisture, we send it back. At every step, our lab cross-checks the phosphorus content, tests for metallic residue, and logs the exposure each drum receives on the production line. Years of doing this work have meant fewer recall batches and more long-term customers.
End-users talk a lot about specifications—melting point, color, form—but we’ve seen most discussion misses the impact of microscopic differences. Changing light transmission with yellow phosphorus, for example, tells our quality team about possible absorption issues. If stickiness increases, it hints at inefficient condensing or storage time drift. Early troubleshooting—built from years of batch monitoring—means most issues get fixed before product even leaves our warehouse. We update our process by learning from every batch, so both routine orders and custom applications get the same high standard.
Chemists, production managers, and safety officers all look for different things in yellow phosphorus. Our job isn’t to guess at their needs—it’s to stay close to their projects. Fire-retardant plastics demand micro-level purity since contaminated phosphorus gums up mixing or causes off-smells in molding. Agrochemical makers worry about reaction consistency, where a single off-spec lump blocks an entire reactor. Defense and electronics industries often test for even more trace elements. We keep track of these requirements and adjust our quality targets for each shipment.
Some customers call months after delivery, noticing subtle changes in their process. We tackle those calls with follow-up testing—not just blaming outside factors, but asking if our phosphorus sample shows any changes since shipment. If we see dulling, bruising, or changes in color, we trace the problem back step by step. Feedback loops like these make the difference between long-term business and failed partnerships. Our lab runs retention samples from every major batch, so we can quickly compare when questions arise. This effort drives our process improvements, and customers end up with more reliable raw materials.
There’s a big difference between producing yellow phosphorus yourself and shipping what someone else made. Our team handles every step in-house: ore handling, furnace operation, vapor transfer, condensation, and final packaging. We see the risks and rewards first-hand. Distributors and resellers talk mostly about paperwork, but only those who make this product know what it means to hold a drum and know every variable that went into it. We have weathered times when price swings made trading look easier, but we’ve stayed focused on what sets real manufacturers apart—control, accountability, and the experience to solve problems before they leave the yard.
Scrutiny has only grown stronger. Buyers want detailed traceability, regulators want tighter reporting, and environmental compliance rounds out every inspection. We adapt by staying close to the process, updating technology, and using feedback to sharpen each batch. End-users who value safety and reliability tend to stick with a manufacturer who shares the risks and responsibilities. As long as yellow phosphorus sits at the start of key supply chains—from agrochemicals to smart electronics—we see no value in shortcuts. We back every shipment with technical backup and real transparency.
Sometimes the market confuses yellow phosphorus with other similar forms. Red phosphorus appeals for safety but skips key chemical reactivity. Black phosphorus offers exotic uses but works for only the most specialized areas. Other forms don’t deliver the same reactivity needed for phosphorus trichloride or certain industrial chlorination reactions. Ours leaves the plant at a level of purity demanded by large-scale factories and small research labs alike. Color, clarity, and solubility get checked with every load, and we fix any outliers before shipping. Customers see this care at the production line—no waste on unusable lumps, no rework on miscolored batches.
Every yellow phosphorus shipment comes after rigorous cross-testing for possible residues from arc refractories or ore blend impurities. If we spot any hint of extra silica or coke carry-over, we run extended purification, even if it costs us extra time and energy. In sluggish markets, it’s easy to chase lower production costs, but we’d rather protect the careers and safety of the customers who trust our material. Yellow phosphorus never rewards shortcuts, and each drum we send out represents our plant’s collective pride.
Our industry won’t look the same tomorrow. Technology changes, countries adjust their own chemical control lists, and new safety guidelines appear every year. We answer with flexibility—a product range that updates as legal definitions shift, batch traceability that follows each load from our gate to the end user, and technical support for buyers who face new compliance demands. Our engineers keep building safer drum pumps and vapor handling systems for modern plants, reducing losses and fire incidents. We believe answering for every drum and every shipment builds real trust, and that’s stayed true through tough times.
Working with buyers from growing economies, we see that not everyone starts with top-tier equipment. Training users and advising on better storage—often from thousands of kilometers away—takes patience and investment. We see ourselves as partners in the entire process, not just suppliers. Customers know our team answers technical calls late into the night. Every time a new plant gets off the ground, we try to visit their site or help them adapt handling to match local weather or infrastructure. These practical efforts remove risks and keep business running smoothly on both sides.
Making yellow phosphorus taught us that shortcuts catch up fast. Whether through failed environmental compliance, product recalls, or customer injuries, every missed detail eventually comes due. Reputation in this field means seeing problems before they cascade—spotting early warning signs in batch logs, adapting quickly to new requirements, and owning up to mistakes. Our business exists because we hold that trust with both long-standing and new clients. From the outside, yellow phosphorus looks like a commodity. For us, every barrel shipped recalls lessons learned, customers served, and ongoing efforts to raise the bar for safer, cleaner, smarter chemical production.