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2-Methyl-5-Phenylbenzothiazole

    • Product Name 2-Methyl-5-Phenylbenzothiazole
    • Alias 2-Methyl-5-phenyl-1-benzothiazole
    • Einecs 626-042-1
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    993326

    Chemical Name 2-Methyl-5-Phenylbenzothiazole
    Molecular Formula C14H11NS
    Molecular Weight 225.31 g/mol
    Cas Number 38103-60-1
    Appearance Off-white to light yellow solid
    Melting Point 102-104°C
    Boiling Point No data available
    Solubility Insoluble in water
    Density No data available
    Purity Typically ≥98%

    As an accredited 2-Methyl-5-Phenylbenzothiazole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle labeled "2-Methyl-5-Phenylbenzothiazole, 25g," features hazard symbols, batch number, CAS, and manufacturer details.
    Shipping 2-Methyl-5-Phenylbenzothiazole is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. Packages are labeled according to regulations, and handled by trained personnel using appropriate safety measures. Shipping should comply with relevant chemical transport guidelines, including those for hazardous materials, if applicable. Store in a cool, dry place during transit.
    Storage **2-Methyl-5-Phenylbenzothiazole** should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers. Protect it from direct sunlight, heat, and moisture. Ensure proper labeling, and avoid sources of ignition. Follow all relevant safety guidelines as outlined in the compound’s Material Safety Data Sheet (MSDS).
    Application of 2-Methyl-5-Phenylbenzothiazole

    Applications of 2-Methyl-5-Phenylbenzothiazole in Industrial Manufacturing

    2-Methyl-5-Phenylbenzothiazole serves as a specialty intermediate in a range of technologically advanced industrial applications. Its core structure supports value-added synthesis in select high-end sectors, where downstream processors require high purity, consistent quality, and compliance with rigorous industry standards.

    1. Synthesis of Liquid Crystal Materials for Display Technologies

    Downstream electronic materials manufacturers use 2-Methyl-5-Phenylbenzothiazole as a building block in the multi-step synthesis of key liquid crystal monomers for LCD and OLED display production. Its unique aromatic structure enables the design of mesogenic compounds with precise dielectric and thermal profiles. The strict process conditions demand consistent physicochemical properties and low trace impurity levels to meet final device reliability specifications.

    Industry compliance standards

    • IEC 61290-1-1: Test procedures for electronic display optics
    • RoHS Directive (EU) 2015/863 for restricted substances
    • REACH Regulation (EC) No 1907/2006 registration and purity verification
    • China GB/T 26377—2010 for display materials analysis

    Typical usage ratio

    • 5%–22% by mole in liquid crystal monomer reaction feeds; adjusted based on target birefringence and viscosity profile of the mesogen

    Downstream process integration

    • Introduced during the Grignard or Suzuki coupling stages, reacting with halobiphenyls or cyclohexyl derivatives prior to monomer purification
    • Requires in-process HPLC monitoring for residual benzothiazole and byproducts

    Final product types

    • Nematic and smectic liquid crystal compounds for TFT displays
    • Specialty materials for thin-film OLED screens
    • Modular mesogen mixtures for automotive instrument panels
    • High-end monitor and television display matrices

    2. Intermediate in Synthesis of Rubber Accelerators for Automotive Tires

    Tire compound manufacturers integrate 2-Methyl-5-Phenylbenzothiazole as a precursor in the controlled synthesis of sulfenamide and thiazole class accelerators. The chemical’s structure enhances the final accelerator’s scorch safety and vulcanization speed. Quality control teams specify tight control over aromatic amine content to optimize tire aging properties and minimize nitrosamine formation during curing.

    Industry compliance standards

    • EN 2000/53/EC: End-of-life vehicle regulations
    • DIN 53524 for rubber accelerator purity
    • ISO 9001:2015 quality system for raw materials
    • US EPA TSCA Inventory for reporting and safety

    Typical usage ratio

    • 2%–7% mass fraction relative to raw MBT or CBS accelerator batch; tailored to tire compound formulation and process temperature window

    Downstream process integration

    • Used during batch synthesis of thiazole accelerators prior to downstream pelletizing or blending
    • In-process FTIR and GC-MS confirm elimination of unreacted intermediates and control batch-to-batch variation

    Final product types

    • Sulfenamide and thiazole-based rubber accelerators (e.g., CBS, TBBS, MBS)
    • Radial passenger car tires
    • Truck tire tread compounds
    • Specialized elastomer blends for industrial conveyor belts

    3. Precursor in Synthesis of Photoinitiators for UV-Curable Coatings

    Specialty chemical companies utilize this compound as a starting material to manufacture photoinitiators, which play a critical role in UV polymerization of high-performance coatings. The presence of the benzothiazole moiety contributes to rapid initiation under UV-A or UV-C irradiation, providing fast curing for electronic, automotive, and industrial finish markets. Purity and trace metal levels impact final gloss, adhesion, and yellowing resistance.

    Industry compliance standards

    • FDA 21 CFR 175.300 for coatings in food contact applications
    • ISO 28219 for traceability and labeling in UV coatings
    • JG/T 478-2015: China’s standard for industrial UV coatings
    • ASTM D7767 Standard Test Method for UV Curing Performance

    Typical usage ratio

    • 6%–14% by weight as a core building block in multi-component photoinitiator synthesis; varies by target UV spectrum response

    Downstream process integration

    • Undergoes selective oxidation and etherification before final photoinitiator crystallization and blending
    • Quality monitored by NMR and UV-Vis to ensure intended absorption profile and minimal byproduct

    Final product types

    • UV-curable photoinitiators for spray and dip coatings
    • Electronics PCB solder resist coatings
    • Protective clear coats for automotive plastics
    • Roll-to-roll finish for flexible packaging films

    4. Intermediate in the Production of Specialty Agrochemical Formulations

    Agrochemical manufacturers employ 2-Methyl-5-Phenylbenzothiazole in the synthesis of advanced fungicide and pesticide actives. Its aromatic structure provides backbone for heterocyclic actives with selective crop safety and field persistence. Downstream recipes require GMP-level impurity management to comply with international residue and worker safety standards.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • EU Regulation (EC) No 1107/2009 for plant protection active substances
    • US EPA Title 40 CFR Part 180: Tolerances and exemptions for pesticide chemicals in food
    • China NY/T 2880-2015 for pesticide ingredient analysis

    Typical usage ratio

    • 3%–12% by mole in triazole and thiazole heterocycle syntheses; usage tuned for specific crop targets and local environmental regulations

    Downstream process integration

    • Integrated at the ring-closure stage of active ingredient manufacturing via cyclization or nucleophilic substitution reactions
    • Final QC includes GC for residual precursor screening and environmental fate characterization

    Final product types

    • Systemic seed treatment fungicides
    • Foliar-applied pesticide suspensions
    • Soil-applied granule products for root health
    • Custom blended herbicide and pesticide formulations for field crop protection
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    Certification & Compliance
    More Introduction

    2-Methyl-5-Phenylbenzothiazole: Product Introduction from Our Manufacturing Floor

    Reliable Quality from Ourselves, Not the Middleman

    Every year, our production lines pour thousands of kilograms of 2-Methyl-5-Phenylbenzothiazole (CAS 6627-48-5) into containers destined for processors, labs, and formulators across a mix of industries. As a chemical manufacturer with decades behind us and a direct hand in every reactor, we don’t just see this compound as another line on a product list. Our experience is grounded in controlling each step, from incoming raw materials to the finished solid—ensuring batch to batch consistency. Here, quality control isn’t outsourced, and neither are our standards.

    What 2-Methyl-5-Phenylbenzothiazole Offers to Your Process

    Our customers reach for 2-Methyl-5-Phenylbenzothiazole mainly for its reliable backbone in specialty synthesis. The compound finds a place in the development of dyes, pharmaceutical intermediates, imaging agents, and advanced polymers. We've watched research labs test its core in SAR explorations, while pigment companies coax brilliant colors that can’t be built any other way. In our shop, purity measures above 98% on finished lots—a baseline, not a sales pitch—refined by repeated crystallization, drying, and close analytical scrutiny.

    What sets this molecule apart in our view is its hybrid benzothiazole structure carrying both methyl and phenyl groups. In application, this gives a manageable melting point for processing but enough molecular stability to stick around through heat, pressure, and light exposure. Over the years, we've worked with formulators who struggled to swap in more common benzothiazole derivatives, and the strict requirements of their end-product would not allow it—color drift, incomplete coupling reactions, or incompatibility in functionalization. We’ve seen this specific isomer become the difference between passing or failing a batch of pigments or imaging chemicals, and it’s why we keep tuning our process around what really happens in our partners’ production floors.

    From Reactor to Packing: What Our Teams Put into Each Batch

    Turning out honest, reliable 2-Methyl-5-Phenylbenzothiazole doesn’t rely on automation alone. Our main reactors are run by teams trained to recognize the subtleties in exothermic reactions—those moments when years of experience decide when to adjust cooling, check pH, or extend stirs. After synthesis, every batch goes through a proprietary purification sequence. We do not chase yield at the expense of clarity on a chromatogram, and our crew takes pride in getting the same response from QC instruments, every single drum, every shipment out the door.

    As a direct manufacturer, we've been asked to cut steps to meet price demands. Over time, shortcuts get exposed downstream—opaque solutions, contaminated intermediates, or slow reactivity in critical formulations. Our position has stayed fixed: reliability for your process rules every decision upstream. The compound’s density, crystalline structure, and absorption profile have been logged, analyzed, and discussed between our technicians and your colleagues in R&D, scale-up, and volume processing. No importer or blender knows these details—the story is written in our plant, not on a reseller’s spreadsheet.

    Differences That Matter: 2-Methyl-5-Phenylbenzothiazole vs. Other Benzothiazole Variants

    Over the years, customers bring us their questions: “Will another benzothiazole compound give the same shade? Can we use a less substituted derivative for our coupling reaction?” In nearly every case, our records and return visits confirm what chemists soon discover—the spot where methyl meets phenyl in this molecule is not just decorative. Compare to plain benzothiazole, which can fall short in both hue purity and solvent compatibility, and we see why some reactions stall or generate more byproduct. Try 2-mercaptobenzothiazole in that role, and you run into risks for reactivity and odor control.

    In fine chemical manufacturing, these differences show up in the details. The migration rate of the substituent group, how the molecule responds under nitration or bromination, or the way it treats free radicals under UV—these aren’t theoretical wrinkles; they're the moments that decide whether a process delivers on spec. Pharmaceutical companies needing intermediate scaffolds for specialty actives point to kinetic profiles that only the 2-methyl-5-phenyl option hits at meaningful yield and selectivity. We've run side-by-side pilot trials and watched the impurities spike when less protected analogs are forced into roles meant for this exact structure.

    Handling Customer Feedback: What Labs and Production Managers Notice

    From the first samples we send out, questions come back not just about purity, but about performance. “Does it dissolve fully in our ethylene glycol solvent?” “How does it hold up in high-shear mixers?” “Can we expect the same melt flow from one container to the next?” Our QC records track these concerns and feed straight into how batches are planned and packed. Each lot leaves with an analytical COA but also hands-on advice—sometimes guidance on storage, sometimes notes on the optimal order of addition.

    Some labs run aging studies, so we’ve invested in shelf-life testing, holding back samples for six or twelve months, then pulling them to compare color, melting point, and spectral response. Seeing how the profile stays fixed builds trust; when something falls short—an extra band in an IR, a visible tinge—we investigate backward, unafraid to retune dryer settings or filtration speeds. Shipping across ocean, rail, and local transport, we’ve had to adjust packaging to curb moisture uptake. Over time, this reduced complaints, cut down end-user drying steps, and made sure our compound arrives close to the way it left our warehouse.

    Environmental Concerns and Safety in Handling

    On the manufacturing floor, our team pays attention not just to product, but to the footprint it leaves behind. Our waste streams from 2-Methyl-5-Phenylbenzothiazole synthesis pass through multiple neutralization and filtration stages, keeping emissions within local limits. Operators get regular training on PPE and handling—goggles, gloves, masks—because while we’re proud to make this compound, we value our health and environment more.

    We receive questions about storage—do barrels leak odors, does the solid cake over, will it lose color if exposed to light? From years of operation, we’ve adopted opaque, sealed drums and anhydrous packing for long-haul shipments. Shipping partners sign off on safety standards. We never use recycled liners or compromise on double-sealing powders. Risk management in our plant covers everything from emissions capture on the line to emergency cleaners on the factory floor. This is not paperwork; it's a daily routine shaped by real-world incidents logged over years.

    Continuous Improvement: Feedback Loops between You and Us

    In chemical manufacturing, nothing stays static for long. Every time your formulation team calls about a hiccup—a viscosity issue in a new dye, or a slower than usual reactivity in a scale-up run—we pull our plant data and start looking for ways to adjust. Most solutions come from experience on the shop floor rather than from an office memo. Maybe a few degrees' tweak in crystallization temperature or a tighter hold on drying vacuum. We’ve even changed our solvents—switching out an old process solvent for a greener, lower-toxicity option—because a customer flagged buildup concerns in their scrubbers downstream.

    The sharing goes both ways. Our partners' requests have driven us to develop larger pack sizes, heat-sealed liners, and fast-to-solution forms of the product. When someone needs more technical backup, we don’t send boilerplate; our lead chemist, who’s worked through dozens of process hiccups, will call back. The decades we've spent in this industry mean that we get the realities of pilot scale versus commercial run, the headaches that come up with batch-to-batch variability, or the way older analytical equipment might misread a slightly shifted peak.

    Consistent Supply and Process Transparency

    Long-term buyers tell us what keeps them coming back is supply reliability and transparency. We don’t overpromise. Our capacity planning doesn’t stretch lines past what we can safely run, and we are up front when a line goes down for maintenance. After supply shocks or logistics hiccups, customers who struggled with resellers' spot-market prices and erratic product specs see the value in knowing us directly. We publish real lead times, track every lot to raw material sources, and keep emergency inventory to keep critical processes running where possible.

    Every so often, someone tries to switch to a different manufacturer based on price, only to return months later after process troubles—bad color, unwanted by-products, or missed delivery dates. We respect that price matters, but experience shows that in specialty chemicals, consistency and traceability matter more. We've built our production scheduling around customer demand cycles, so their end-of-year rush or quarterly maintenance dips don’t leave them short or forced to hunt on a volatile spot market.

    Why Direct Manufacturing Adds Real Value

    In our own plant, every kilo of 2-Methyl-5-Phenylbenzothiazole can be tracked through digital logs and lab notebooks. Our reactors, QC labs, and packing lines operate with a level of attention you won’t find at a trading desk. Chemical reactions never obey spreadsheets. There are times a slight impurity slips through a less stringent process—showing up later as a yield drop or a mysterious spot on a TLC plate. These are the moments a manufacturer’s input matters most. Our on-site engineers tweak the process, spot-check raw material lots, and check the end product using up-to-date analytical tools like HPLC, GC-MS, and UV-Vis.

    No matter how digitized the world gets, some elements of this business remain human. Our teams watch for faint color shifts, listen for unusual sounds in a running agitator, and read the behavior of a drying cake by touch as much as by monitor. Years of this hands-on care translate into a product our partners know they can trust. It’s not just chemistry; it’s how we show up for our customers’ needs over the long run.

    A Manufacturer's Perspective on Industry Trends

    With the push toward sustainability and “green chemistry,” our process engineers look for ways to improve yield and cut waste. We’ve swapped out hazardous solvents where possible and added recovery cycles to reclaim material. This brings down our environmental footprint and drops waste handling costs for downstream users. With stricter regulations rolling out worldwide, having this controlled, low-impurity product on hand saves headaches in audits and simplifies regulatory paperwork for customers. Our labs log compliance with all major reference standards, and we're prepared to support technical documentation for new applications or registrations as customers branch out into fresh markets.

    In competing with lower-cost but lower-quality producers, we plant our flag with proven performance and well-documented supply chains. Industry trends of the past decade—more visible contamination, shortcuts on waste streams, thinly veiled blends with unknown origins—are not just press stories to us. We've stepped in after downstream failures—pigment lines that suddenly throw inconsistent color, or pharma routes that run up against yield cliffs with contaminated intermediates. The calls come back to us for a reason. Our origin-to-end controls provide documentation that cannot be faked by a trading desk halfway around the world.

    Supporting Advanced Applications: Where 2-Methyl-5-Phenylbenzothiazole Makes a Difference

    Our collaborations have spanned everything from research universities to global colorants specialists. In specialty dye and pigment synthesis, color performance hinges on purity and structure of intermediates. 2-Methyl-5-Phenylbenzothiazole’s tailored substitution pattern lets formulators hit precise shade targets and maintains performance when exposed to harsh lighting or high heat. When pigment suppliers run head-to-head performance trials, our material stands up to the test: color fastness, reactivity with coupling agents, and ease of incorporation in their system. Downtime drops, yields stay stable, and customer complaints grow rare.

    In pharmaceutical and fine chemical synthesis, the compound serves as a scaffold for constructing more complex rings and heterocycles. Its reactivity profile supports selective functionalization without excessive by-product risk. Companies designing new active ingredients use it to streamline late-stage synthesis, making exploratory work less risky and scale-up more predictable. Years of scale-up support let us understand what matters at each step—whether the end product heads to animal study, pilot batch, or commercial launch.

    Packaging Makes a Real Difference in End Use

    Our packaging team has rethought how we ship 2-Methyl-5-Phenylbenzothiazole after seeing what happens when the wrong liner or drum ends up on the receiving dock. Moisture and oxygen can accelerate caking or degrade purity if left unchecked. We've stepped beyond the standard blue drum, switching to multi-layer, nitrogen-flushed liners and rigid containers that won’t buckle in a stack. Customers gave direct feedback—pallet loads arrived in monsoon season with product as dry and free-flowing as the day it left our plant. Less hassle opening drums means faster weighing and less material loss in your process. Safety teams have cut handling complaints, and operations managers keep silent storage rooms, even in heat and humidity swings.

    Trust Built Through Longevity

    We recognize that the real test of a chemical supplier isn’t just specs on paper but history on the floor—who steps up when a batch goes sideways, who can clarify a spectral oddity, or supply supporting documents in the middle of an audit. Our long-haul relationships in specialty chemicals stem from being accessible, owning the consequences, and maintaining a memory of every challenge faced with each partner. This is not just business. It's the result of skilled hands, watchful eyes, and the steady routine of making chemicals the right way, every time.

    Looking Ahead—Supporting Tomorrow’s Chemists and Innovators

    We keep our ears open for new applications and breakthroughs. Incoming requests might ask for custom particle size, dust-free grades, or only certain contaminants measured to the finest trace. We are ready because chemistry advances only as far as its building blocks allow. As new markets open up and regulatory scrutiny sharpens, we stand ready to discuss, troubleshoot, and adapt what we do—grounded in the craft of manufacturing, right here, under our own roof. This connection—between a manufacturer actually making the compound and the companies pushing boundaries in their fields—remains critical. We welcome feedback, scrutiny, and collaboration, because that’s how we keep making every kilo of 2-Methyl-5-Phenylbenzothiazole better for you.