|
HS Code |
381269 |
| Chemical Name | P-Methyl-Mercapto-Phenol |
| Cas Number | 498-66-8 |
| Molecular Formula | C7H8OS |
| Molecular Weight | 140.20 g/mol |
| Appearance | White to off-white crystalline powder |
| Melting Point | 58-62°C |
| Boiling Point | 261°C |
| Solubility In Water | Slightly soluble |
| Density | 1.20 g/cm³ |
| Flash Point | 135°C |
| Purity | ≥98% |
| Storage Conditions | Store in a cool, dry place, tightly closed |
| Synonyms | 4-Methyl-4-mercaptophenol; 4-Mercapto-p-cresol |
| Odor | Characteristic odor |
| Stability | Stable under recommended storage conditions |
As an accredited P-Methyl-Meroapto-Phenol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for P-Methyl-Mercapto-Phenol contains 500 grams in an amber glass bottle with a tamper-evident screw cap. |
| Shipping | P-Methyl-Mercapto-Phenol should be shipped in tightly sealed, chemical-resistant containers to prevent leaks and exposure. It must be transported according to local, national, and international hazardous material regulations, with appropriate labeling and documentation. Use secondary containment and avoid extreme temperatures during transit. Ensure handlers wear suitable personal protective equipment. |
| Storage | P-Methyl-Mercapto-Phenol should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from sources of ignition and incompatible substances such as strong oxidizers. Protect from moisture and direct sunlight. Use corrosion-resistant shelving. Label container appropriately, and restrict access to trained personnel. Always follow relevant safety and regulatory guidelines for chemical storage. |
Competitive P-Methyl-Meroapto-Phenol 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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Working on the chemical production line, we get closely acquainted with each batch of P-Methyl-Mercapto-Phenol. Our team monitors every kettle, every feedstock delivery, and every small shift in reaction conditions with a hands-on approach. This isn’t just a generic product; it’s a result of real experience with raw materials, process control, and a long-standing commitment to product reliability. Our version of P-Methyl-Mercapto-Phenol stands out, both for its consistent quality and the care that goes into each kilogram we ship out.
From the ground up, manufacturing P-Methyl-Mercapto-Phenol takes coordination and understanding of the nuances of aromatic thiols. The choice of methyl group position, the sulfhydryl substitution, and even the smallest impurity can influence the product’s final behavior. Our operators keep a sharp eye on purity, often targeting specifications upwards of 99%, but we’re more interested in controlling the things that really show in downstream use — color stability, sulfur content, and how aging impacts the compound in storage or during shipment.
Our main production model runs at a technical grade most suited for the rubber and polymer industries. Customers ask about melting range, moisture content, residual acidity, and especially the presence of by-products. Through constant monitoring, we maintain a low water content because too much moisture throws off almost every application further downstream. Every batch shows a consistent pale-yellow crystalline appearance and a characteristic sulfurous odor, always under the safe and recommended maximum. By paying close attention to particle size and flow, we see less bridging and clumping during bagging, reducing downtime in customer equipment.
Most bulk orders head straight into the rubber industry, where the compound acts as a curative and chain transfer agent. In these processes, even tiny traces of metallic impurities or unwanted oxidizers in the starting material can introduce defects or color bodies in the final product. Repeated testing during production limits problem-causing side reactions during vulcanization. We receive feedback that our batches allow customers to keep a tighter formulation window, achieve more predictable product performance, and meet demanding end-user standards in automotive and construction industries.
Sometimes we’re asked to produce batches with stricter limits on heavy metal residues or to meet enhanced aromatic purity. These special lots are common for developers working on advanced elastomeric systems, where trace elements influence either odor or long-term UV stability. Our R&D team steps into the lab to verify that improved purification steps deliver measurable benefits — and we often adopt those improvements as standard, because nothing convinces more than seeing a better-performing compound in action.
Within the world of mercapto-phenol derivatives, not all options are created equal. The position of the methyl group dramatically alters reactivity due to steric effects and the electron-donating influence on the aromatic ring. For example, our p-methyl derivative behaves differently from ortho- or meta- isomers, especially during electrophilic substitution or oxidation. Downstream, this means improved selectivity or resistance to over-oxidation, which cut down on waste formation and improve reaction yields.
Compared to non-methylated thiophenols, P-Methyl-Mercapto-Phenol is less prone to forming colored oxidation by-products, delivering a cleaner, more color-stable rubber or resin. We see more repeat demand for the para-methyl compound where finished product appearance matters — say in white or light-colored rubber compounds. Some customers previously struggled with batch-to-batch variation when using less refined or mixed-isomer products, switching to our single-isomer p-methyl grade for its reliability.
Customers often compare it with para-cresol or other alkylphenols, attracted to the similar aromatic framework. Our experience shows that the thiol group brings a unique set of reactivity, acting as both a nucleophile and a chain transfer agent, which alkyl-based phenols cannot match. We have received reports of improved processing times, more even crosslinking, and significant reductions in processing odors versus alternative phenolics, giving users a competitive edge.
Anyone in chemical manufacturing will acknowledge the hurdles that come with handling mercapto compounds. The odor is persistent, and emission control requires properly sealed condensers, careful ventilation, and regular checks on filter performance. Over the years, we made significant investment in scrubber systems and have fine-tuned equipment cleaning protocols, which not only reduces environmental complaints but keeps workplace exposure well below safety limits.
Bulk deliveries need special attention. We learned early that thiol oxidation during transit ruins batches, so every drum and bulk container runs a nitrogen sweep and is double-checked for tightness. By collaborating with logistics partners to shorten delivery cycles and adopt better tracking, we cut spoilage rates down to the single digits and maintain reliable on-time supply for downstream processors.
Laboratory data can only tell part of the story. On the shop floor, our teams look for subtle changes in how the material handles, whether it clumps too easily in humid weather or if color starts to shift with even brief exposure to air. We established a regular feedback loop with customers to catch problems before they escalate: one production run last year showed higher-than-expected trace oxygenates, which we traced back to a minor gasket failure in a reactor. Fixing such small flaws requires alert operators, honest communication, and a culture that values problem-solving.
Every batch undergoes GC, HPLC, and wet chemistry analysis for key targets — purity, side products, and moisture. If anything drifts outside our historic range, we pause shipments and dig into the source of the problem. Some market segments, such as pharmaceuticals and specialty materials, ask for even lower limits on certain contaminants, and in those cases, we’re ready to adjust procedures or add an extra purification step.
Global manufacturers face a patchwork of regulations covering hazardous substances, environmental emissions, and end-of-life concerns. We never treat these requirements as paperwork. Keeping sulfur-based emissions tightly controlled made immediate sense — neighboring communities appreciate less odor, and our own staff benefit from a safer plant. Over time, legislative changes have pushed us to lower discharge levels and increase reclamation of off-gases. This led us to invest in advanced scrubbing and monitoring, especially as government inspectors started paying more attention to process transparency and emissions reporting.
REACH registration in Europe and TSCA compliance in the USA both require careful tracking of raw material sources and detailed end use declarations. We work with suppliers who are transparent about their own upstream processes, reducing supply chain surprises. Because customers increasingly ask about life cycle data, we built in energy monitoring and initiated projects to recover and reuse as much heat and solvent as possible from the reaction streams.
Direct conversations with buyers influence a lot of our process updates. One batch that stuck together in drums during a monsoon season highlighted the need for better moisture controls during packaging. The problem didn’t show up in pre-shipment tests but appeared after weeks in an overseas warehouse. Together with that customer, we developed a revised drying and packaging line, using higher-barrier liners and faster transfer from dryer to bag. Losses dropped sharply across the next six shipments.
Several partners in Southeast Asia found that the typical batch-to-batch color variation common in locally processed material was causing headaches in color-matched elastomer lines. We reviewed their process, ran parallel tests using our product, and switched them over to a higher-purity grade. They saw more consistent results, fewer scrap rates, and reduced downtime due to rework. That kind of hands-on support — not just sending out a product specification but helping to solve job-site problems — changed how we approach every order.
Demands shift quickly. A few years ago, pressure to improve worker safety and reduce product odor led us to re-examine catalyst choices in our main synthesis. After many trials and failed attempts, we settled on a proprietary purification sequence that cut residual by-products, lowered sulfur-based volatiles, and enabled us to market a low-odor grade for use in confined plant settings. Sales in that category doubled within a year and customer safety officers regularly mention reduced exposure monitoring.
Our technical team works with academic researchers on projects to understand long-term stability and environmental breakdown products of aromatic thiols. Regulatory pressure and growing interest in sustainability keep us pushing for cleaner, safer synthesis and packaging. Finding alternative solvents, lowering energy consumption, or redesigning waste treatment lines aren’t overnight jobs, but ongoing collaboration and investment deliver tangible results.
The global drive towards lighter, more durable polymers keeps specialty chemicals like P-Methyl-Mercapto-Phenol in demand. Manufacturers want higher-performing vulcanization agents to produce lighter tires, improved hoses, and better-sealing gaskets for vehicles. Custom formulations target heat resistance, improved process speeds, or tighter color stability in finished goods. Versatility matters: this compound adapts well to various rubber matrices without major process changes, letting customers quickly pivot as application needs shift.
Interest grows outside the traditional rubber market. Some research groups have been exploring derivatives of P-Methyl-Mercapto-Phenol as UV stabilizers or building blocks for specialized resins with electrical properties. We field requests for samples to support developmental work in electronics encapsulation and advanced adhesives. For each new use, we study additional specifications, offer technical support, and start small with test batches, ready to refine as new requirements surface.
Shipping a good product isn’t the limit of our responsibility. Ongoing stewardship means preparing clear labeling, up-to-date safety instructions, and offering advice on storage and waste disposal. Many buyers, especially in emerging markets, request support for in-plant training or guidance on accidental release. Our technical and safety staff travel with shipments, running regular seminars on safe handling, emergency procedures, and product lifecycle impacts.
We continue to improve packaging to enhance shelf life and simplify recovery or recycling. By using drums with upgraded liners or reusable intermediate containers, we cut down on customer waste and costs. These projects evolve through feedback and often become new standards for the industry.
The chemical market rarely stays static. Feedstock price swings, evolving safety requirements, and changes in end-user demand can all disrupt even well-run plants. We design process flexibility into every step, whether that means qualifying alternative suppliers or having the agility to tweak purification steps. During the last global supply shortage, we buffered inventory by securing key intermediates from two separate geographic sources, keeping output steady while some competitors quietly suspended deliveries.
Pricing remains a tense issue. Commodity volatility drives tough negotiations, but we focus on building enough reliability and technical depth that customers understand what extra value they gain versus the cheapest option. Supporting users with new application trials, on-site troubleshooting, and customization builds relationships — turning routine supply chains into collaborative partnerships.
No matter how refined the process gets, improvement never stops. Production staff rotate through line audits that highlight inefficiencies or potential quality slip-ups. Operators compare notes on process tweaks that save time or reduce cleaning, and we actively reward ideas that cut waste or improve safety. Customer visits and real-world challenges generate more change than the most sophisticated control system — one packaging mishap or a rejected batch often spurs a system-wide fix.
We schedule regular performance reviews, gathering insights from operators, sales staff, and customers. This isn’t about a checklist, but about creating a feedback-driven operation where people feel responsible for both successes and failures. That culture underpins everything we know and claim about P-Methyl-Mercapto-Phenol.
Making P-Methyl-Mercapto-Phenol isn’t just a function of scaling up a lab reaction. Every improvement, every process adjustment, and every solution to a customer’s problem comes from a hands-on understanding of what the product needs to do in the real world. By sharing our experience openly and constantly learning from feedback, we make sure that what goes into every shipment reflects our best effort, technical know-how, and commitment to supporting our industry partners.
We take pride knowing that real-world challenges, not just product specifications, shape our manufacturing and stewardship. Our track record with P-Methyl-Mercapto-Phenol didn’t come from a manual, but from years spent in the plant and on the phone with customers, making sure every batch delivers on its promise.
