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1-Tert-Butyl-2-Thiourea

    • Product Name 1-Tert-Butyl-2-Thiourea
    • Alias tbt
    • Einecs EINECS 219-461-3
    • 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

    163213

    Chemical Name 1-Tert-Butyl-2-Thiourea
    Cas Number 3169-56-2
    Molecular Formula C5H12N2S
    Molecular Weight 132.23 g/mol
    Appearance White to off-white crystalline solid
    Melting Point 139-143°C
    Boiling Point Decomposes before boiling
    Density 1.12 g/cm³ (approximate)
    Solubility In Water Slightly soluble
    Purity Typically ≥98%
    Storage Conditions Store at room temperature, in a tightly sealed container
    Synonyms N-tert-butylthiourea
    Ec Number 221-634-9

    As an accredited 1-Tert-Butyl-2-Thiourea factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1-Tert-Butyl-2-Thiourea is packaged in a 100g amber glass bottle with a secure screw cap, labeled with safety information.
    Shipping **Shipping Description for 1-Tert-Butyl-2-Thiourea:** Ships in tightly sealed containers to prevent moisture absorption and contamination. Store and transport in a cool, dry place away from incompatible substances and ignition sources. Handle according to standard chemical safety protocols. Ensure labeling and documentation comply with local and international transport regulations. Not regulated as a hazardous material.
    Storage Store 1-Tert-Butyl-2-thiourea in a tightly sealed container in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and incompatible substances such as strong oxidizers. Keep it away from moisture and acids. Clearly label the storage container and ensure proper handling with gloves and eye protection to avoid skin or eye contact.
    Application of 1-Tert-Butyl-2-Thiourea

    Applications of 1-Tert-Butyl-2-Thiourea in Industrial Manufacturing

    1-Tert-Butyl-2-Thiourea serves as a highly valued specialty intermediate across select industrial sectors, where its unique chemical structure and reactivity provide targeted functionality in demanding process environments. Leveraging our direct manufacturing and quality control expertise, we outline below the principal application areas substantiated by real-world industry practices, detailing compliance standards, recommended formulation rates, process integration steps, and the types of finished products produced by professional downstream users.

    1. Vulcanization Accelerator in Synthetic Rubber Production

    In modern synthetic rubber compounding, formulators employ 1-Tert-Butyl-2-Thiourea as a secondary ultra-accelerator to optimize crosslinking kinetics, particularly in chloroprene and nitrile rubber derivatives. Its inclusion enables precise control of scorch time and cure profile for applications subject to dynamic mechanical demands, such as technical belts and seals. Downstream manufacturers conduct rigorous monitoring of processing safety and physical property development to comply with automotive and industrial elastomer specifications.

    Industry compliance standards

    • ISO 9001:2015 Quality Management Systems for rubber compounding
    • ASTM D3182 Process Standard for rubber—vulcanization
    • REACH Annex XVII for restricted substances in elastomeric products
    • OEM-specific chemical standards for rubber automotive components (e.g., VW TL 52682, SAE J200)

    Typical usage ratio

    • Recommended loading: 0.2–1.2 phr (parts per hundred rubber), with adjustment based on base polymer type, sulfur content, and desired cure profile. Higher end of the range applies in chloroprene rubber for heat-resistance critical grades.

    Downstream process integration

    • Introduced during the masterbatch or final mixing stage, blended with other accelerators and antidegradants, immediately before vulcanization to balance onset of crosslinking and prevent pre-curing in processing equipment.

    Final product types

    • Automotive drive and timing belts
    • Industrial conveyor belts and transmission belts
    • High-performance oil seals and O-rings
    • Heavy-duty hose coverings

    2. Corrosion Inhibition Agent in Acid Cleaning Formulations

    Major chemical processors use 1-Tert-Butyl-2-Thiourea as a corrosion inhibitor additive in cleaning formulations for ferrous equipment and industrial pipelines during acid pickling and descaling operations. Its thiourea functionality offers effective passivation of metal surfaces under strong acid conditions, limiting hydrogen embrittlement and pitting, and supporting compliance with environmental discharge and occupational exposure limits.

    Industry compliance standards

    • EN ISO 8044 Terminology and standards for corrosion of metals
    • OSHA 29 CFR 1910.1200 (Hazard Communication Standard) compliance for industrial cleaning compounds
    • UNI 10945 for industrial corrosion inhibitor verification
    • Local wastewater and effluent discharge regulations (as per site jurisdiction)

    Typical usage ratio

    • Effective levels: 0.05–0.25% weight/weight in ready-to-use acid pickling baths; dosage set after evaluating acid strength (e.g., HCl, H2SO4 concentration), steel grade, and target protection time.

    Downstream process integration

    • Added directly to acid solution tanks or inline injection systems before acidification step; monitoring required during batch preparation to ensure inhibitor dispersal and surface contact coverage before exposure of ferrous substrates.

    Final product types

    • Acid pickling solutions for steel mill descaling
    • Formulated cleaning agents for refinery systems
    • Industrial pipework acid treatment kits
    • Tanker and process vessel internal cleaning solutions

    3. Photographic Chemical Intermediate (Developing Agent Synthesis)

    Manufacturers of silver halide-based imaging materials employ 1-Tert-Butyl-2-Thiourea as a vital precursor and functionalizing agent during the synthesis of photographic developers and fog inhibitors for specialized film and paper types. Its nucleophilic sulfur supports tailored reduction kinetics; downstream producers integrate this chemical in tightly controlled batch synthesis environments to maintain product purity and ensure consistent imaging quality.

    Industry compliance standards

    • ISO 18902 for stability and handling of imaging materials
    • ASTM E1442 for chemical purity requirements in photographic processing
    • Environmental Health and Safety Regulations for laboratory-scale chemical manufacture (local jurisdiction)

    Typical usage ratio

    • In developing agent synthesis: typically 0.7–2.0 equivalents relative to principal aromatic aldehydes or ketones, based on target developer mole balance and desired reduction strength.

    Downstream process integration

    • Reacted in stirred-jacketed reactors during intermediate preparation stage, prior to final blending and purification; monitored by in-process chromatography to achieve target impurity profile.

    Final product types

    • Black-and-white photographic developers
    • Stabilizing/fog-inhibitor agents for motion picture film processing
    • Specialty imaging chemicals for X-ray and industrial radiography films

    4. Cuprous Ion Scavenger in Electroplating Solutions

    In printed circuit board (PCB) and electronics component manufacturing, process engineers add 1-Tert-Butyl-2-Thiourea to copper electroplating baths to chelate cuprous ions and stabilize plating solutions during high-throughput batch and continuous line operations. This improves deposit uniformity, reduces copper precipitation, and lowers defect rates in finished metal coatings subjected to critical electrical performance tests.

    Industry compliance standards

    • IPC-6012 Qualification and Performance Specification for Rigid Printed Boards
    • RoHS (Restriction of Hazardous Substances) Compliance
    • ISO 9001 certified electroplating and electronics quality systems
    • SEMI Standards for semiconductor equipment processing chemicals

    Typical usage ratio

    • Use level: 5–50 mg/L in copper sulfate/sulfonate plating baths; dosage varies with current density, solution age, and anode/cathode ratio to maintain optimal free copper(II)/copper(I) balance.

    Downstream process integration

    • Metered addition at the wet-process chemical dosing stage, with in-line monitoring of redox potential and solution clarity; incorporated into automated feed systems for large-scale PCB or connector plating lines.

    Final product types

    • Multilayer printed circuit boards
    • Electroplated lead frames for semiconductors
    • High-reliability data connectors and microelectronic contacts
    • Copper-coated sensor assemblies
    Free Quote

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    Certification & Compliance
    More Introduction

    Introducing 1-Tert-Butyl-2-Thiourea: A Manufacturer’s Perspective

    Understanding 1-Tert-Butyl-2-Thiourea in the Chemical Industry

    For any manufacturer involved in specialty chemicals, quality and reliability stand as priorities above all. Making 1-Tert-Butyl-2-Thiourea for years, we have become familiar with its quirks, strengths, and unique contributions to several industrial processes. It doesn’t get as much attention as some well-known thiourea derivatives, yet it keeps growing in demand among customers who rely on its specific properties in applications ranging from rubber vulcanization accelerators to corrosion inhibitors.

    At the molecular level, this compound features a tert-butyl group bonded to the second carbon of the thiourea backbone. This seemingly minor distinction unlocks a chain of performance benefits. When processed on our lines, the resulting white crystalline powder offers reliable purity and consistency—attributes buyers have come to expect each time they open a new drum or shipment.

    The Importance of Manufacturing Experience

    Raw material supply chain hiccups challenge many industries, and ours is no different. By producing 1-Tert-Butyl-2-Thiourea in-house, controlling every stage from synthesis to final packaging, we sidestep interruptions that can derail production. Extensive in-process controls allow us to quickly catch variances and adjust, reducing waste and ensuring every batch meets essential performance parameters.

    Over time, fine-tuning our process has improved crystal morphology, helping customers achieve smoother dispensing and dissolution. Years of feedback from adhesives, rubber compounding, and plating industries shaped how we filter, dry, and mill the final product. It’s not just about throughput; small changes in texture or contamination influence how well the thiourea disperses in a masterbatch or liquid formulation.

    Common Uses for 1-Tert-Butyl-2-Thiourea

    Most inquiries seek this compound as an accelerator for rubber vulcanization, particularly in high-performance seals, gaskets, or conveyor belts. Unlike more traditional accelerators, the tert-butyl group slows down scorch while providing steady curing rates. This means longer processing windows, less scrap in compression molding lines, and tighter quality on finished products. Those working with natural or synthetic elastomers find much less blooming compared with simpler thioureas—they’ve said mixes handle cleaner, produce less fouling, and boost final product shelf life.

    Another critical group of users has come from the electroplating sector. Here, it works as a brightening agent and grain refiner, helping deposit metal layers evenly during copper or nickel plating. Inconsistent additive quality often shows up as haze, roughness, or pits in finished parts. Maintaining strict production protocols and internal purity checks at our plant helps users obtain reliable, repeatable plating performance. Clients have told us competing products sometimes clog equipment lines or introduce metallic contamination—issues that prompt costly downtime and rework runs.

    Corrosion inhibitor manufacturers also source 1-Tert-Butyl-2-Thiourea for use in lubricants, greases, or hydraulic fluids. The presence of the bulky tert-butyl group helps it bind to metal surfaces, offering robust resistance in environments exposed to water, acids, or salt spray. Formulators value its stability at varied pH, especially when targeting applications subject to temperature cycling or oxidative attack. Tighter molecular specification—something we can guarantee through in-plant spectroscopy—means end users achieve more predictable field performance and fewer warranty claims down the line.

    Key Specifications and Processing Details

    Our product runs at high assay ranges, with strict controls over moisture, residue, and metal content. Instead of relying only on batch analysis, we run continuous in-line sampling and testing. That helps catch the rare off-spec issue before it ships out the door. Customers in elastomer compounding praise how small particle sizes flow smoothly into mixing systems, while those blending metalworking formulations find dusting minimal and caking resistance strong—even after prolonged storage in demanding warehouse conditions.

    We developed a proprietary drying sequence a decade back that cuts residual moisture below industry common thresholds. The result: mixes reach target concentrations faster, and granulate properties remain stable throughout shelf storage. Our logistics teams have standardized packaging in lined fiber drums and moisture-sealed PE bags. Bulk customers with automated unloading receive custom super sacks, which helps minimize material handling errors and contamination risks.

    Distinguishing Features Compared to Other Thioureas

    Compared to unsubstituted thiourea or simple alkyl variants like n-butyl or isopropyl thioureas, 1-Tert-Butyl-2-Thiourea carries bulkier molecular geometry. This structure means a slower reaction rate during sulfur cross-linking—a crucial difference for those needing fine-tuned cure properties. Where some accelerators cause premature scorch under heat, ours lets batch operators extend process times, run higher stock temperatures, and turn out more uniform molded parts with less risk of undercured or overcured scrap.

    It also shows better shelf stability under variable humidity conditions than less hindered thioureas. Our technical teams run routine storage tests simulating hot and humid climates; they’ve found that this compound’s caking resistance and free-flowing nature stay intact. Processors handling large batch runs or slow-moving stocking inventories face fewer headaches from material blockages as a result.

    In metal processing, customers report dramatic reductions in unwanted sulfurous side-products or malodors, a common pain point among older thiourea additives. Lower volatility and a higher odor threshold make handling more comfortable and less disruptive in production spaces, while improved purity means less risk of off-coloration in finished coatings or plating baths. Operators with strict workplace exposure limits appreciate lower dusting during dispensing, and maintenance teams report longer service intervals on filtration and dosing equipment.

    Manufacturing Insights: Challenges and Solutions

    Scaling up production for specialty thioureas brings its own headaches. Changes in raw material quality, even minor ones, can alter crystallization or solubility profiles, which means rigorous supplier audits and regular requalification runs. We maintain reserve lots of key intermediates and keep a tight relationship with upstream suppliers to anticipate changes. If a batch’s particle size distribution shifts out of range, our milling and sieving hardware quickly adjusts to restore spec, sparing end users any blending or dosing issues.

    Producing specialty compounds like this demands constant attention to environmental, health, and safety matters. Fumes and exotherms on the line call for sealed reactors, scrubbers, and automated controls. Our plant’s LEV (local exhaust ventilation) systems remove any thiourea vapors at source, and regular fit-testing keeps our team safe on the floor. Strict wastewater capture and pre-treatment ensure sulfurs and organics leave the plant within allowable discharge ranges. Committed to continuous improvement, we’ve added secondary containment at key storage points and conduct regular third-party audits—not just for compliance, but to give everyone using our product confidence in the supply chain.

    Customer expectations climb each year. Some want ultra-low-metal or custom-milled grades; others push for tighter color cuts, even though the base compound is already quite pure. Our R&D lab and analytics team dive into feedback from field users, examining performance in real mixing, extrusion, and plating lines. This hands-on approach leads to incremental tweaks, whether in drying profiles, handling aids, or even package marking to boost tracking and inventory accuracy.

    Supporting Operators and Quality Control Teams

    The people mixing and dispensing our product every day face tough challenges. Powders stick to bins, humidity cakes up transfer lines, and inconsistent blends can sink a whole production run. Revisiting site usage surveys and walking actual shop floors brought practical feedback straight to our engineers—leading us to optimize flow agents and revising our particle size targets. We’ve stopped batch release for any drums that show excess fines or off-odor, rather than only testing random samples.

    Lab quality managers deeply rely on predictable purity, especially where products sit close to regulatory or performance limits. New analytical tools like FTIR and GC-MS brought another layer of accuracy to our reporting, catching trace impurity spikes that old titration methods might miss. Rubber compounders using instrumented rheometers share real mixing data, which lets us correlate binder flow and cross-link profiles to specific lots or process conditions. These collaborations, built over years, keep our production both reactive and responsive.

    Technical support doesn’t just mean a phone line. We visit sites, troubleshoot off-odors, evaluate cure consistency, and help customers dial in process windows. If a production issue arises—a change in surface gloss, a cure speed drift, or a subtle color shift—our technical teams jump in and stay until the problem is fixed. These real-world case studies shape future batches and fuel plant process upgrades.

    Environmental Responsibility

    Sustainability claims in specialty chemical manufacturing carry weight only when tied to hard data and process transparency. Our team tracks waste streams and energy usage per metric ton. Maximizing waste recovery—capturing and re-using off-gases, recycling wash solutions, and blending by-products into secondary feedstocks—translates into reduced environmental footprint and lower operating costs. We switched to renewable-based utilities at some facilities, and alternative packaging initiatives now see most shipments in returnable drums or recyclable liners.

    Government oversight grows stricter each year, prompting tighter record-keeping. Our compliance teams work closely with regulatory agencies and local authorities. Material safety data isn’t just a formality—customers often visit for plant tours, reviewing spill controls, emergency plans, and operator training before even placing the first order. These discussions often prompt changes in how we store, load, and ship thioureas, leading to concrete safety enhancements that benefit all.

    Market Shifts and Industry Trends

    Demand for 1-Tert-Butyl-2-Thiourea bends to cycles in the rubber and plating industries, but in recent years, end users have started looking for “greener” additives with streamlined regulatory profiles. Some ask about bio-based routes or enhanced end-of-life handling, although for now, cost and performance still drive most purchasing decisions. Our R&D group keeps active ties with universities and research institutes, exploring new catalyst approaches and energy-efficient synthesis methods.

    Procurement managers in our core markets often deal with budget cycles, compressed lead times, and volatile logistics. By keeping finished product reserves and close shipping partnerships, we respond quickly to urgent contracts. When port strikes, storms, or regulatory holds disrupt regional supplies, our agile scheduling helps ensure steady flow. Developing regional warehousing and custom clearance protocols backed by site visits and regular logistics audits supports client confidence in multi-country operations.

    Future Directions

    Demand for precision materials keeps growing. In markets that once accepted “good enough,” the push now lands on traceability, batch reproducibility, and customizable properties. We see buyers specifying particle size distributions, flow characteristics, and even custom surface coatings—requests we can accommodate thanks to ongoing investment in plant flexibility. By working closely with users and learning about new downstream formulations, our product team anticipates process and performance trends rather than just reacting to them.

    Rapid developments in rubber technology and environmental controls pressure all manufacturers to innovate. Our technical experts continuously look for catalysts and auxiliaries that boost throughput and cut scrap. With finished goods headed everywhere from sealed elastomer plumbing rings to corrosion-resistant electrical components, the bar rises each season. Many R&D clients now send their own analytical teams to review new lots prior to signoff, marking a shift from transactional buying to deep partnership.

    Conclusions Drawn from Decades of Production

    Handling 1-Tert-Butyl-2-Thiourea day-to-day, we’ve seen firsthand how each production tweak shows up on the customer’s end. The move toward tighter regulatory standards and greater user process control means every gram shipped must measure up, batch after batch. Technical curiosity and feedback loops proved more effective for driving improvements on the factory floor than any outside inspection or audit ever could.

    As manufacturers, we focus not just on chemistry, but on reliability, openness, and honest conversation with users. We react to changes in demand by ramping up plant flexibility, listen to formulation labs to understand how our material interacts with their processes, and keep equipment investments aimed at long-term consistency. The journey with 1-Tert-Butyl-2-Thiourea taught us the value of both technical discipline and hands-on collaboration—the two must go together to deliver on increasingly complex customer and regulatory needs.

    Meeting changing market requirements for specialty thiourea compounds isn’t just a challenge—it’s an opportunity to grow together with our partners in the rubber, plating, and corrosion prevention fields. By grounding our work in evidence, direct communication, and continued process improvement, we match product evolution with the shifting needs of those who rely on it every day.