|
HS Code |
129475 |
| Product Name | O-Carboxy Thiophenol |
| Cas Number | 98-96-4 |
| Molecular Formula | C7H6O2S |
| Molecular Weight | 154.19 g/mol |
| Appearance | White to off-white crystalline powder |
| Melting Point | 135-138 °C |
| Solubility | Slightly soluble in water, soluble in organic solvents |
| Purity | Typically ≥98% |
| Storage Conditions | Store in a cool, dry place, tightly closed |
| Synonyms | 2-Mercaptobenzoic acid |
| Density | 1.46 g/cm³ (approximate) |
As an accredited O-Carboxy Thiophenol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | O-Carboxy Thiophenol is securely packed in a 25g amber glass bottle with a tamper-evident cap and appropriate hazard labeling. |
| Shipping | O-Carboxy Thiophenol should be shipped in tightly sealed, chemically resistant containers under cool, dry conditions. It must be clearly labeled and accompanied by appropriate safety documents. Avoid exposure to heat and incompatible substances. Typically, shipping complies with local and international hazardous material transportation regulations due to its potentially harmful properties. |
| Storage | O-Carboxy Thiophenol should be stored in a cool, dry, well-ventilated area away from sources of ignition and incompatible substances such as oxidizing agents. The container must be tightly closed and kept in a chemically resistant, labeled container. Protect from light, moisture, and physical damage. Use secondary containment to prevent spillage, and store under inert atmosphere if sensitive to air. |
Competitive O-Carboxy Thiophenol prices that fit your budget—flexible terms and customized quotes for every order.
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At the manufacturing level, chemicals like O-Carboxy Thiophenol (also known as 2-mercaptobenzoic acid) stand out not just because of their name but because of the consistent performance they offer across decades of evolving process demands. Working directly with O-Carboxy Thiophenol day in and day out, I’ve seen the unique characteristics that draw specialists back time after time: reliable reactivity, a manageable profile in terms of handling, and a trusted position in a multitude of synthesis routes.
In the realm of fine chemicals, not every product brings the same flexibility. Many aromatic thiols vary dramatically in purity, contaminant profile, or even how the product reacts to storage and shipment. With O-Carboxy Thiophenol, purity and shelf life demonstrate a real difference compared to simpler thiols or structurally similar compounds. That difference means less rework on downstream purification steps and less unpredictability for process engineers. When it comes to a thiol that holds a carboxylic acid directly at the ortho position, this molecule wins on site selectivity in coupling reactions and the ease at which it can be tracked by analytical methods.
Manufacturing O-Carboxy Thiophenol begins with technical challenges that catch newcomers off-guard. Precise temperature controls, strict moisture management, and real-time monitoring of sulfur-containing intermediates make a noticeable impact on both quality and yield. From a producer’s standpoint, the benzoic acid starting material sets the stage, but controlling the thiolation step requires equipment that withstands strong acids and sulfides at elevated temperatures.
Here, consistency means more than hitting a number on a certificate of analysis. Each lot gets checked not just for purity but for trace contaminants like iron, residual solvents, or reaction byproducts. Labs rely on reproducibility, and every process tweak earns its place through hard-won success measured on both analytical graphs and operator hours saved. Manufacturers must also adapt to the unique texture and solubility profile this product exhibits: fine crystalline O-Carboxy Thiophenol handles differently than its methyl or ethyl counterparts, especially in bulk transfer and final drying.
The crystalline product holds a melting point in the range of 185-187°C, something that determines both storage options and the thermal stability window for downstream reaction planning. Unlike simpler thiols, which can be disagreeable and even dangerously volatile, O-Carboxy Thiophenol offers a less aggressive odor and better control over off-gassing, making the working environment more tolerable for operators, especially in large-batch runs.
Day-to-day production measures success not only by assay values but by practical feedback. In the real production world, a minimum purity standard of 99 percent for O-Carboxy Thiophenol isn’t a marketing number — it means that customers can count on consistent, high-yield syntheses without diverting material for costly rework. The low moisture content, usually under 0.5 percent, avoids clumping and keeps the product flowing freely through hoppers and feeders. Over the years, granular control of particle size has grown in importance. Too fine, and dust becomes a warehouse issue. Too coarse, and dissolution rates slow batch timelines. At the plant, fine-tuning crystallization parameters turned out to be the answer, which calls for deep hands-on experience: you can’t learn it from a textbook.
From time to time, customers prompt us with unique requests: custom blends, specific particle size ranges, or ultra-low trace metals. Meeting these requests forced us to look again at every part of our process — from raw material selection right down to the filters at final packaging. Any manufacturer can see that suppliers of O-Carboxy Thiophenol differ dramatically in their willingness to tackle these jobs; only direct production experience gives the confidence to promise and deliver on custom work without interruption.
O-Carboxy Thiophenol sits at a crossroads in organic chemistry. Its role in the synthesis of pharmaceuticals, agricultural chemicals, photographic chemicals, and as a key intermediate for certain dyes highlights its versatility, but words often gloss over the stubborn challenges end users face. I’ve seen the molecule function as both a nucleophile and a ligand precursor, bridging transition metals in catalysts used for carbon-carbon bond formation. In medical chemistry, the ortho orientation of the carboxyl group next to the thiol makes selective activation and derivatization straightforward. This opens doors not available through other benzoic acid derivatives, especially when target specificity matters.
Engineers working on specialty polymers value this product for more than its sulfur content: the distinct pattern of electron donation and withdrawal from its functional groups makes it a favorite where interactions with copper, gold, or other soft metals determine end-use behaviors (like adhesives or anti-corrosion films). As a ligand, it anchors firmly to metal centers, delivering robust, predictable coordination compared to meta- or para-substituted options. I’ve heard from coating developers who found that the ortho-carboxylate position reduces side-reactions during polymerization, raising yields and dropping time spent cleaning reactor lines.
Chemical families can look similar on paper, but only practical production experience reveals which details actually matter. O-Carboxy Thiophenol tends to outperform p- and m-carboxy analogs on reactivity in ortho-directed cyclizations or in metal complex formation under mild conditions. Structurally, adding a carboxyl to the ortho position creates unique hydrogen bonding opportunities and steric effects. That affects solubility, crystallization, and — most critically — the behavior in condensation reactions, where competitors slip up with lower selectivity or byproduct control.
As a manufacturer, the difference between O-Carboxy Thiophenol and generic thiophenol runs much deeper than adding an extra group to a molecule. Unsubstituted thiophenol gives higher volatility and flammability, presenting headaches for safe transport and storage. We’ve opted for O-Carboxy Thiophenol in many of our own processes precisely to cut back on loss from evaporation, instability, and air-sensitivity. This translates into fewer production shutdowns, better yield per batch, and compliance with stricter local environmental rules—where no factory wants an extra visit from the regulatory authorities due to errant odors or emissions.
Parallels often get drawn with o-aminothiophenol and other substituted variants. Through years of operation, we found that the carboxy group offers more tunable reactivity for modern coupling agents and a much more predictable pKa profile, which makes pH-dependent processes smoother for operators managing multi-step runs. This predictability saves batches from avoidable pH swings, allows for quick adjustment in continuous flow setups, and cuts error rates in scale-up from pilot to production.
We track batch stability and shelf life closely — during one side-by-side comparison over 12 months, unopened O-Carboxy Thiophenol drums retained over 98% of original assay with no significant change in melting point or color. Meanwhile, substituted analogs, especially those with electron-donating groups at para positions, saw reductions in purity by up to 3%. These aren’t just numbers: they’re the difference between an end product batch running smoothly and facing an expensive purification step at the eleventh hour.
Another metric involves safety. As handlers of bulk material, we know that the lower vapor pressure and odor strength of O-Carboxy Thiophenol reduce employee exposure risk. In practical safety reviews, exposure limits get approached much later at similar use rates, giving process engineers more breathing room to finish transfers and cleanups. Also, thanks to lower vapor pressures, ventilation needs decrease, translating to noticeable utility savings over the long haul — a detail that matters when margins are tight.
Customers in the dye industry once told us that product consistency needed to go beyond assay; color stability and the absence of side-products visible in UV/Vis spectra made the difference between consistent manufacturing and a whole production lot ending up as unmarketable waste. Our manufacturing improvements targeted not just the baseline synthesis but improvements in crystallization, washing, and drying — practical details which chemical traders rarely consider, but which matter countless times over the product lifecycle.
Production challenges rarely end at synthesis — packaging and transportation issues have their say. For O-Carboxy Thiophenol, the inherently low volatility and good thermal stability enable us to use more conventional, less costly packaging compared to more reactive or volatile thiols. Early on we struggled with packaging weights: bulk bags allowed fine dusting, but lined fiber drums sealed product flavor and texture for even months-long transfers across continents. This packaging tweak — learned through field experience — now keeps transit loss near zero.
From the warehouse, storage proved simple, since the compound resists significant hydrolysis or decomposition under normal warehouse conditions. Manufacturers can count on product in inventory today retaining the same properties months later, a comfort when supply chain hiccups delay shipments or rescheduling of synthesis runs becomes unavoidable.
Yet customers face their own unique headaches. Custom analytical requirements, new regulatory thresholds on trace odors, demands for digital track-and-trace for sustainability audits — every request winds up in our labs to test new solutions. Digital batch traceability, continuous documentation of trace metals, and weekly environmental emissions validation moved from “extra” features to routine parts of our workflow. We keep backup samples from every batch produced, verified not just by in-house QC but by certified external labs. The confidence this brings to contract manufacturers downstream shows up not just in fewer quality complaints but in repeat business year after year.
No contemporary producer can afford to overlook environmental pressures or regulatory compliance. O-Carboxy Thiophenol, compared against simpler thiols, generates less sulfurous off-gassing and shows lower bioaccumulation profiles according to published studies and our own effluent monitoring. Factory stack emissions and scrubbing requirements remain below local and EU limits, even when running continuous batches for export demand. Part of this benefit comes from choosing the right starting materials and purification steps, every modification honed by years of in-process monitoring and environmental reporting — not a guess, but measured with direct sample testing and documented improvements in effluent quality.
On recycling and waste minimization, the manageable nature of O-Carboxy Thiophenol stands out: most waste streams allow for in-plant recovery of the residual acid and thiol content, which our own team engineered into closed-loop systems. This keeps raw material costs down and aligns with modern ESG protocols, giving both our operations and our customers a leg up in environmental audits.
The carboxy functionality proves useful beyond chemistry, allowing for better waste neutralization and facilitating biodegradation, earning it points in green chemistry checklists. Choosing O-Carboxy Thiophenol means making life easier for local authorities and for our own compliance teams, who appreciate any opportunity to shrink the mountain of paperwork and hazardous waste labels.
Direct involvement in manufacturing brings regular opportunities for collaboration, from joint development projects with university labs to pilot-scale testing at customer sites. These partnerships let us solve real-world process bottlenecks; for instance, tuning the particle size of O-Carboxy Thiophenol shortened dissolution time in aqueous reactors by 30% for a high-volume customer. Producers who invest in technical feedback and open lines of communication — not just sales pitch talk — drive the biggest gains for end users.
Internally, we invest in continuous training; process engineers handle actual synthesis and troubleshooting, not just running lab scripts. With every batch, lessons are collected and adjustments logged, building up a body of know-how unique to direct manufacturers. New process changes only get implemented after live pilot trials confirm they bring the promised improvement — anything less means risking our own production schedules and customer relationships.
It’s easy to overlook the human and technical realities behind a kilogram of fine chemical. In the domain of O-Carboxy Thiophenol, direct manufacturers bring insight built up through repeated process cycles, long-term stability data, and close involvement with both raw material suppliers and end users. Decision makers weighing options among aromatic thiols or related benzoic acids deserve the assurance that their supply won’t just arrive but will work the same way every time — no surprises, no expensive troubleshooting mid-process, and a proven record balancing safety, environmental, and technical demands.
O-Carboxy Thiophenol’s value in synthesis, coordination chemistry, and specialty product formulation is no academic point. As a manufacturer, the difference emerges in production robustness, user and operator feedback, less downtime, and fewer waste headaches. These are the stories that seldom show up in a product leaflet, yet these facts and hard-earned improvements make real industrial projects succeed where others stall.
Whether developing next-generation catalysts, pharmaceutical intermediates, or specialized materials, working directly with a manufacturer committed to quality, traceability, and continuous improvement in O-Carboxy Thiophenol production delivers an advantage felt at every link in the supply chain.
