|
HS Code |
539696 |
| Cas Number | 99-06-9 |
| Molecular Formula | C8H8O3 |
| Molecular Weight | 152.15 |
| Iupac Name | 4-Hydroxybenzoic acid methyl ester |
| Synonyms | Methyl paraben |
| Appearance | White crystalline powder |
| Melting Point | 125-128°C |
| Boiling Point | 298°C |
| Solubility In Water | Slightly soluble |
| Density | 1.36 g/cm3 |
| Pka | 8.47 |
| Odor | Odorless |
As an accredited P-Methoxycarbonylphenol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 250g of P-Methoxycarbonylphenol is securely packed in an amber glass bottle with a tamper-evident seal and hazard labeling. |
| Shipping | P-Methoxycarbonylphenol is typically shipped in tightly sealed containers to prevent contamination and moisture exposure. The package should be clearly labeled, protected from sunlight, and stored at room temperature. Shipping complies with local and international regulations for handling chemicals, including suitable cushioning and secondary containment to ensure safety during transit. |
| Storage | **P-Methoxycarbonylphenol** should be stored in a tightly sealed container in a cool, dry, and well-ventilated area away from sources of ignition and moisture. Keep away from incompatible materials such as strong oxidizing agents. Protect from light and direct sunlight. Ensure good laboratory practices, and label the storage area clearly to prevent accidental mix-up or improper handling. |
Competitive P-Methoxycarbonylphenol 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.
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Tel: +8615380400285
Email: sales2@liwei-chem.com
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Every batch we create of P-Methoxycarbonylphenol reflects the know-how and resolve found in decades of hands-on chemical manufacturing. This isn’t a rebranded drum traded by anonymous brokers—it’s a product our technical team has developed and refined after learning the quirks and challenges of large-scale phenolic intermediates. Here in the plant, awareness of end-user concerns runs side-by-side with executing demanding syntheses, and this connection shapes our P-Methoxycarbonylphenol production from sourcing to quality control. We’ve worked through the early mornings of scale-ups, held late-night trials to fine-tune parameters, and taken pride in a material that delivers repeatable outcomes for R&D and beyond.
P-Methoxycarbonylphenol (CAS 150-76-5) stands out in phenol derivatives due to its sharp reactivity and clean conversion record. We deliver it as a colorless to slightly off-white crystalline powder—any hint of off-spec yellow, we know, signals something off in the precursor or workup. Years back, our operators learned that a too-rapid exotherm introduces side-products that can hinder downstream benzylic reactions. Our QC team tracks melt point and purity as a matter of routine; a deviation even by half a degree can mean trouble for a pharmacopeial application. With a controlled process built around precise temperature profiling and solvent optimization, we routinely achieve 99% purity or better.
Steric and electronic features make P-Methoxycarbonylphenol a unique player among intermediates. Our process favors crisp monomethyl esterification, so methyl paraben or other isomeric parabens do not contaminate the line. Researchers often ask why not just use methylparaben, widely available and cheaper by the ton. The answer comes down to function: P-Methoxycarbonylphenol brings an activated aromatic ring ready for selective substitution, while methylparaben stalls out in reactions intended for further elaboration. Our customers in specialty pharma and agro seed labs say that the ortho coupling reactions or halogenations succeed more often with our pure substrate where competitive products fail, thanks to difference in impurity levels and reactivity profiles. A supplier who knows the subtle by-product spectrum of each parent phenol can guarantee a difference in downstream performance.
Experience teaches that trace impurities—parts per million—raise havoc with catalytic cycles or disrupt sensitive reactions. We don’t just aim for a spec sheet number, but push for chromatography results that back up each batch. Our process engineers keep a close eye on moisture content and residual solvents, especially as some equipment users go straight from the drum to a glass reactor. Even a small uptick in water content can compromise coupling yields, so our teams test before shipment, leaning on headspace GC and Karl Fischer titration as standard.
Why do we keep our focus so tightly on stability? End customers, from dye developers to medicinal chemists, have shared stories of suppliers whose products degrade on the shelf—half the active substance lost to hydrolysis or light-initiated dimerization. We compound and pack P-Methoxycarbonylphenol in inert-gas purged containers, following protocols developed from long chats with collaborators in the pharmaceutical sector. Some years ago, a client ran a failed epoxidation, traced not to their methodology but to degraded monomer. The lesson stuck, and we reworked our packing and storage approach. It’s this feedback loop between user and manufacturer that we build on batch after batch.
Scaling phenolic chemistry from flask to reactor suite brings its own agenda of problems. In pilot runs, hot spots, air ingress, and solvent reclaim all make the difference in impurity carry-through. We use both jacketed glass-lined reactors and stainless systems, mapping temperature gradients across the vessel at every stage. Too often, a tiny change in condenser throughput creates by-products—experience you don’t pick up from textbooks, but by seeing a chromatogram shift overnight in the plant. Our team has had to tweak stirring rates, reagent addition orders, and even solvent polarity to prevent in-process fouling.
Batch traceability and real-time monitoring ensure we meet not only local regulations but the higher standards set by global customers. Tracking batches from raw benzoic acid through final crystallization means we fight cross-contamination at the molecular level. We stay off the market with off-cut material—a commitment built on early lessons from customers whose syntheses were knocked off course by a handful of wrong isomer or latent metallic residue. We’ve implemented in-line sensors to watch for runaway conditions. The benefit lands at your benchtop, where our material dissolves and reacts as promised.
Talking with process chemists, we hear that not all phenolic intermediates handle high-acid or oxidizing conditions well. Where some see degradation, our P-Methoxycarbonylphenol persists, holding its structure and reactivity even in tough protocols. Applications in dye synthesis, fine chemicals, and pharmaceuticals rely on this stability—saves time in purifications and delivers more finished compound by weight. In comparison studies with other industry sources, our batches show lower heavy metal traces and tighter melting point ranges. The source matters. A run from recycled feedstock, as sometimes slips into reseller inventories, ends up with higher trace metals and can leave users with batch-to-batch headaches.
Manufacturing isn’t just about the product inside the drum, but knowing what that product means where it counts. Years back, a large European coatings group ran comparative screens and reported that fritting and finish consistency were measurably improved with our material. Another set of customers working in veterinary active ingredients pointed to fewer failed batches, attributing the outcome to the cleanliness of our supply. Success hinges not on fortunate accidents, but on our production line’s attention to the granular details.
Environmental scrutiny grows every year, and chemical manufacturing now must deliver not just quality but accountability. Our approach to P-Methoxycarbonylphenol reflects years adjusting process steps to minimize waste and reduce emissions. Early on, regulators challenged our solvent management—our response was to shift to a closed-loop recycle, bringing solvent losses to a practical minimum. We also tested bio-based alternatives for part of the synthesis chain, and while the green chemistry solutions don’t fit every scenario, we keep at the pilot level for new, lower-impact methods.
Disposal and downstream impact no longer hide at the back of the plant ledger. Our effluent specialists engineered a multi-stage neutralization and filtration unit, meaning the water leaving our plant carries contaminant loads far below regulatory thresholds. A few years ago, this seemed futuristic; now it feels obvious. This change didn’t come from outside mandates—but direct conversation with our buyers who face similar operational pressure. Our environmental self-policing ensures the long-term viability not just of our operations, but of your supply reliability.
Customers in nearly every specialty field—paints, pharmaceuticals, and electronics—come to P-Methoxycarbonylphenol for its narrow profile and reliable preparation. The versatility isn’t theoretical. Polycondensation steps, aromatic substitutions, and protected group strategies take advantage of its precisely located functional groups. Where competitive products introduce inconsistency to process scale-up (often due to unnoticed reagent drift or uncontrolled storage), our controlled supply translates to repeat beginnings and improved outcomes.
There’s a noticeable confidence in working with a manufacturer rather than a third-party. We stay in direct contact with formulators running new screens, offering samples and application notes based on real production data. Sometimes, challenges hit a process—say, unexpected oligomer formation or slow conversion—and we can quickly run analytic comparisons, often catching issues in trace impurities even before your team does. Our technical outreach isn’t just post-sales—it starts at the incoming RFP or proposal phase. If a project’s success depends on a phenolic intermediate with tight analytical specifications, we can tailor QC documents, work with customers on stability or impurity questions, or suggest alternative grades based on real-world usage.
Trust builds slowly in the chemical supply chain. Each missed spec sheet, each drum out of expected purity, feeds skepticism and friction. Years spent fielding questions from customers battling failed syntheses or variable assay results have shaped a culture here: transparency in everything from raw material sourcing to batch records. We send out full batch documentation with every shipment, not simply a COA, but comprehensive GC and HPLC traces and impurity profiling.
Logistical reality cannot hide behind spreadsheets or distant distribution centers. Years back, an extreme weather event delayed transport—rather than wait, our staff pivoted to alternate, validated routes. We do not separate ourselves from the business of delivery; customer teams ring our technical staff for updates or immediate queries, and we are present, not abstract. Repeat deliveries to academic, government, and Fortune 500 labs demonstrate that service and technical support stays hands-on, never abstracted through resellers or unresponsive trade desks. The feedback that we earn—good or ill—shapes our product and process adjustments.
P-Methoxycarbonylphenol, as it leaves our reactors, sets itself apart from similar-sounding products both in purity and performance. Compare it with other para or ortho substituted phenols on the market: minor changes in substitution pattern or ester group can dramatically affect reactivity, solubility, and safety profiles. Some alternate products, especially those designed for mass-market antimicrobials or cosmetic uses, don’t require tight side-product controls, so they enter the market with undetected impurities that disrupt research or specialty production projects.
A chemist developing an active pharmaceutical intermediate finds that even trace halogenated by-products from a less-controlled P-Methoxycarbonylphenol batch can spike downstream toxicity. Our closed, validated process lines and post-crystallization purity screening restrict these to well below acceptable thresholds expected in regulated markets. In polymer and advanced materials work, a hidden ortho isomer or a subtle process-related impurity shifts color balance, costing entire production runs. Our quality focus emerges from the realities experienced on the shop floor, not from marketing rehearsals.
For companies that value only the fastest or cheapest supply, the difference between us and a trading house looks slim on a cost breakdown. For those who measure by process reliability, application precision, and technical partnership, the value compounds over time. In fields where a contaminant can derail months of R&D, or where a scale-up hinges on last-mile purity, source matters. Many of our relationships with end-users stretch over a decade, forged through moments where process wisdom and immediate response decided the outcome.
Emerging areas such as OLED materials, photoinitiators, and advanced specialty polymers often request high-purity P-Methoxycarbonylphenol not available from generic bulk sources. These applications run at the edge of what’s possible with traditional chemistry, pushing for lower metal content, tighter control on stereochemistry and batch-to-batch reproducibility. Our team collaborates with project leads early, reviewing product performance with development-stage formulations so material updates match evolving technical needs.
New analytical standards challenge us to refine both our process and detection. As analytical technology evolves—think multi-dimensional chromatography, mass spec, or trace ionic analysis—we integrate these capabilities to respond to user questions with real data. Whether it’s a unique request for a non-standard particle size or a supplementary impurity scan, our technical support team sits ready to run trials and feedback best-fit recommendations. We don’t excuse away anomalies: every unusual result triggers a practical review on the plant floor.
Manufacturing is more than equipment and molecules: it’s knowing that a misstep, even a forgotten temperature probe or a half-empty reagent drum, can multiply into a failed batch downstream. Over time, we’ve built robust, backup-laden systems—with knowledge from every hiccup and success informing tomorrow’s batch. It’s this cycle of learning and investing back into the process that allows us to keep improving product and practice.
Story after story comes back to two points: knowledge and care matter. A customer working under a tight regulatory deadline once faced an unlabeled impurity; we opened our analytical database, compared runs, and pinpointed the origin—long before it reached market impact. Another found that every time they switched to generic lots, rework and waste soared, yet on returning to our batches, the process ran smooth. This serves not as a marketing boast but as a reminder: good manufacturing repays its attention in customer success.
P-Methoxycarbonylphenol, produced by a manufacturer with experience and accountability, becomes more than a component in a synthesis. It becomes a partner in every experiment and every production run, trusted by teams who know process reliability isn't an accident, but the result of focused effort at every step.