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5-(4-Diethylaminobenzylidene)Rhodanine

    • Product Name 5-(4-Diethylaminobenzylidene)Rhodanine
    • Alias Nile Blue
    • Einecs 249-300-9
    • 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
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    Specifications

    HS Code

    497682

    Product Name 5-(4-Diethylaminobenzylidene)Rhodanine
    Chemical Formula C14H16N2OS2
    Molecular Weight 292.42 g/mol
    Cas Number 5370-14-5
    Appearance Orange to red crystalline powder
    Melting Point 210-213°C
    Solubility Soluble in DMSO, ethanol, and methanol
    Purity Typically ≥98%
    Boiling Point Decomposes before boiling
    Storage Conditions Store at 2-8°C, protect from light
    Synonyms 4-(Diethylamino)benzylidene rhodanine
    Applications Intermediate in organic synthesis and dye chemistry
    Structural Type Rhodanine derivative
    Hazard Statements May cause irritation to skin, eyes, and respiratory tract
    Ec Number 226-212-1

    As an accredited 5-(4-Diethylaminobenzylidene)Rhodanine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The packaging is a sealed amber glass bottle labeled "5-(4-Diethylaminobenzylidene)Rhodanine, 10 grams" with hazard and handling information.
    Shipping The chemical **5-(4-Diethylaminobenzylidene)Rhodanine** is shipped in tightly sealed containers to protect it from moisture and light. Packaging complies with safety regulations for chemicals, ensuring secure, leak-proof delivery. Shipping includes appropriate hazard labeling and documentation, and is typically handled by certified chemical carriers with tracking and delivery confirmation.
    Storage 5-(4-Diethylaminobenzylidene)Rhodanine should be stored in a tightly sealed container, protected from light, moisture, and air. Store at room temperature in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers. Avoid excessive heat and direct sunlight. Proper labeling and regular inspection are recommended for safety and to maintain the quality of the chemical.
    Application of 5-(4-Diethylaminobenzylidene)Rhodanine

    Applications of 5-(4-Diethylaminobenzylidene)Rhodanine in Industrial Manufacturing

    As a primary manufacturer of 5-(4-Diethylaminobenzylidene)Rhodanine, we deliver this specialty intermediate directly into several key industrial sectors. This raw material acts as a high-purity chromogenic and photosensitive agent, supporting downstream producers in fine chemicals, materials science, and diagnostic technologies. Below we detail the principal application fields, with attention to regulatory compliance, accurate usage levels, production stage integration, and ready-made product outputs.

    1. Organic Photovoltaic Materials Manufacturing

    In the development of third-generation solar cells, especially organic photovoltaic (OPV) devices, research and industry employ this material as an electron donor-acceptor coupling agent and photosensitizer. Its electron-rich diethylamino moiety provides crucial charge transfer properties required for increasing power conversion efficiency and broadening spectral absorption. OPV manufacturers integrate it into bulk heterojunction blends, directly impacting film morphology and electronic properties. Lot-to-lot coloristic and purity control remain critical for device stability.

    Industry compliance standards

    • RoHS Directive (2011/65/EU, EU eco-design requirements)
    • Restriction of PAHs, SVHCs, and heavy metals in accordance with REACH ((EC) No 1907/2006)
    • UL 1703 Photovoltaic Module Safety Standard
    • IEC 61215/61646 Thin-Film Module Qualification

    Typical usage ratio

    • 0.5–3.0 wt% within polymer blend; variation by desired bandgap tuning and device thickness
    • Ratio adjusted through optical density and layer uniformity testing

    Downstream process integration

    • Added during solution blending and casting of active layers
    • Integrated before blade coating, spin coating, or slot-die coating in clean room environment
    • Filtration and purity monitoring at this stage to prevent agglomeration

    Final product types

    • Flexible organic photovoltaic modules
    • Building-integrated transparent solar panels
    • Wearable solar textiles
    • Decorative OPV lamination films

    2. Analytical Chromogenic Reagents in Clinical Diagnostics

    Clinical and industrial laboratories use this compound as a critical colorimetric reagent forming part of detection kits for metal ions and specific biomolecules. Its high molar absorptivity ensures sensitive endpoint visualization in UV-Vis spectroscopy and microplate assays. Downstream diagnostic device makers require reproducible response characteristics and pharmaceutical-grade trace metal controls, meeting strict product registration criteria for in vitro diagnostics (IVD).

    Industry compliance standards

    • ISO 13485:2016 Medical Devices — Quality Management Systems
    • Good Manufacturing Practices (GMP) for IVD raw materials (21 CFR Part 820, FDA QSR)
    • CLSI EPA/EP standards for analytical performance
    • IVDR (EU Regulation 2017/746) for diagnostic reagents

    Typical usage ratio

    • 10–50 μM in endpoint colorimetric assay buffer
    • Concentration optimized via analytical calibration curves for target analyte detection

    Downstream process integration

    • Dispensed into reaction wells or test strip matrix
    • Dissolved into stabilized buffer prior to kit assembly and lyophilization as needed
    • QC includes spectral purity and trace solvent analysis

    Final product types

    • Metal ion test kits (e.g., copper, mercury analysis)
    • Clinical microplate colorimetric detection kits
    • Disposable biosensor test strips
    • UV-Vis assay kit components

    3. Dye Intermediate for Thermochromic Printing Inks

    In the specialty printing sector, this compound functions as a high-performance intermediate for synthesizing thermally responsive dyes. Ink formulators use it to prepare reversible thermochromic pigments that respond to temperature fluctuations, which printing operations employ in packaging, security labeling, and novelty products. The material’s thermal response profile and solubility ensure stability during dispersion milling and printing application.

    Industry compliance standards

    • EN 71-3:2019 Safety of Toys – Migration of Certain Elements (for children’s prints)
    • REACH Regulation on restricted substances (Annex XVII)
    • ISO 2834-1:2006 Printing Ink Testing
    • Good Manufacturing Practice for Printing Inks for food contact (EuPIA GMP, EC No 2023/2006)

    Typical usage ratio

    • 3–7 wt% in dye synthesis feedstock batch
    • Precise dosing reliant on thermal response and print coverage specifications

    Downstream process integration

    • Reacted during pigment intermediate formulation under controlled temperature and pH
    • Dispersed in ink milling; quality assessed by rheology and color shift testing
    • Filtered before transfer to ink blending lines

    Final product types

    • Thermochromic security inks for anti-counterfeit marks
    • Interactive packaging labels with temperature indicators
    • Novelty printing for promotional items
    • Temperature-sensitive product coding

    4. Synthetic Intermediate for Pharmaceutical R&D

    Pharmaceutical research facilities utilize this raw material as a key heterocyclic intermediate during the construction of advanced active pharmaceutical ingredient (API) scaffolds, particularly for sulfur-containing heterocycles and rhodanine analogs. Medicinal chemists rely on its high purity for consistent yields and minimal by-product formation during reaction scale up, underpinning workflows aimed at developing candidate molecules with desired pharmacodynamic properties.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice (GMP) for Active Pharmaceutical Ingredients
    • USP <823> and <795> for compounding and chemical controls
    • FDA 21 CFR Part 211 for cGMP in drug substance manufacture
    • EMA Guideline on process validation (EMA/CHMP/CVMP/QWP/BWP/70278/2012)

    Typical usage ratio

    • 0.4–1.5 molar equivalent in rhodanine ring-forming or side-chain modification steps
    • Ratio selected dependent on precursor reactivity and desired product conversion

    Downstream process integration

    • Introduced in batch or flow chemistry reactors under inert atmosphere
    • Followed by quench, filtration, and purification tailored to next synthetic operation
    • QC includes trace impurities and spectral analysis (NMR, HPLC)

    Final product types

    • Lead compound libraries for drug discovery
    • Sulfur-heterocycle based candidate therapeutics
    • Reference standards for rational drug design
    • Pre-formulation research samples
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    Certification & Compliance
    More Introduction

    5-(4-Diethylaminobenzylidene)Rhodanine: A Manufacturer’s Perspective

    Shaping Specialty Chemistry With Experience

    Over many years producing specialty intermediates, certain molecules stand out for their practical reliability, flexibility in design, and consistent outcomes in customer processes. 5-(4-Diethylaminobenzylidene)rhodanine occupies a distinct space in this lineup. We synthesize this compound in our controlled facilities, drawing on batch optimization and tight process monitoring so end users can expect consistent physical characteristics. What speaks loudest from our production floors isn’t simply compliance—it’s seeing customers run smoother colorant batches, improve photonic device reproducibility, and repeat analytical tests that might stumble with lesser-built materials.

    Why This Compound Draws Industry Attention

    Chemists in dye chemistry, laser technology, and analytical sciences recognize 5-(4-Diethylaminobenzylidene)rhodanine for its unique combination of chemical structure and performance footprint. The molecule bridges aromatic and thiazolidinone groups, which shapes how it chills in storage, dissolves for reagent preparation, and translates across solvent systems—properties that can reduce headaches at nearly every scale, from research to factory operations.

    Our production pipeline leans on well-established synthetic routes rather than shortcuts that undermine quality. Reliable sourcing is an everyday challenge in specialty chemistry, so we maintain backward integration wherever possible. This brings security and traceability when buyers need assurance that their critical raw materials keep pace with project cycles or regulatory shifts.

    Finding Fit for Application: What Sets This Grade Apart

    Within our lot records, differences become clear when comparing 5-(4-Diethylaminobenzylidene)rhodanine to more basic derivatives. Several customers rely on its extended conjugation and the electron-donating diethylamino substituent, which, from a synthetic standpoint, translates into broader light absorption ranges and boosted photostability. These attributes have direct impacts for those chasing processable organic dyes, especially in solar cell sensitizers, nonlinear optical materials, and advanced ink development.

    The compound’s crystalline nature, melting range, and spectral signature serve as immediate markers of quality. Frequent lot-to-lot checks ensure reproducibility, not just because of internal QC standards but also due to the practical feedback from customer pilot runs. Some other manufacturers cut corners by ramping up throughput or relaxing environmental controls. We continue to invest in modular reactor technology, along with in-process analytical checks, so every vial or drum we ship holds to the expected absorbance and purity.

    Production Realities and What They Mean for Consistency

    Quality never comes down to a checkbox. Our team works hands-on with source materials and intermediates, controlling reaction temperatures, pH profiles, and post-synthesis purification. Many of us have backgrounds running everything from glassware-scale R&D to automated prep plants. That perspective shapes how production is scheduled, as not every order is best satisfied by scaling up without consideration for yield drop-offs or side-reaction profiles.

    We’ve logged temperature effects, reagent lot differences, and solvent grade shifts through years of campaigns. For 5-(4-Diethylaminobenzylidene)rhodanine, certain by-products can threaten purity if operators aren’t experienced. We bump up staff training whenever a process deviation crops up, tightening process windows to avoid surprises. Colleagues often share insights from trial projects and post-mortems, building a knowledge base that helps make the next synthesis smoother.

    Handling, Storage, and Process Upkeep

    Feedback from clients handling this compound points to a few consistent observations. The robust crystalline material stores well under ambient conditions, though long-term stockpiling can expose any flaws in packaging or labeling. Automated handling systems in larger plants respond best to consistent batch sizing and minimal dusting, a detail we fine-tune with controlled drying conditions. We prefer smaller containerization for specialty requests, since this reduces cross-contamination risks and loss when aliquoting for research or synthesis.

    Little things matter when shipping high-value intermediates. Over time, shipping in rigid HDPE instead of glass has helped cut breakage claims without static buildup. Our warehouse staff treat specialty dyes and research intermediates as a separate priority group, marking containers for temperature excursions and quick-release for custom batch requirements. The learning curve for new end users of 5-(4-Diethylaminobenzylidene)rhodanine tends to be short—most find the material dissolves reliably in standard organic systems, whether prepping for kinetic runs or assembling colorimetric sensors.

    Comparative Differences With Other Rhodanine-Based Compounds

    In technical conversations with customers, the question often shifts from “Does it meet the spec?” to “Why opt for the diethylaminobenzylidene version?” The answer lies partly in application data and partly in the chemistry. The diethylamino function broadens charge delocalization, pushing color tuning into favorable wavelength regimes for certain sensors and photovoltaic experiments. Standard rhodanine derivatives can’t touch this kind of range or resistance to photobleaching under strong light.

    Clients chasing alternative chromophores notice the extended π-system and improved reproducibility for this molecule. While we also manufacture simpler rhodanine imine compounds, we see repeat business for this grade from teams who have worked through variation cycles and want fewer unknowns in their optical or electronic property studies. No two batches look identical on the outside, but batch records trace all crucial in-process details, so teams can replicate outcomes in complex device fabrication.

    Real-World Use: What Customers Tell Us

    The most valuable test of our work isn’t a single assay or lab run; it’s feedback from long-term customers. In organic photovoltaic research, stability under high-flux illumination makes or breaks project feasibility. Organizations using 5-(4-Diethylaminobenzylidene)rhodanine regularly publish work citing its robust resistance to degradation, and their direct feedback tightens our own process controls.

    Colorant developers mention high tint strength and batch-to-batch tonal consistency, which cuts down on reformulation cycles. Analytical teams point to high signal-to-background ratios in chromogenic sensor arrays—an attribute they often struggle to maintain with simpler Schiff base dyes or less pure grades sourced elsewhere. These teams have experimented with alternatives and found our molecule provides the right blend of color strength and handling ease.

    Adapting Production to New Demands

    Needs evolve fast. Specialty fields like photonics and sensor development often set aggressive purity and performance targets that lower-grade or less-stringently-made molecules can’t achieve. We adapt by offering refined purification stages for client-specified performance envelopes, whether pushing for sub-ppm metal content or controlling microcrystal particle sizing. Our research team tracks new synthetic modifications showing promise in literature, running feasibility batches when a customer brings up a potential new use or adaptation of the rhodanine scaffold.

    Some longtime customers audit our production yearly, seeking transparency on everything from waste handling to in-plant air control. It pays off—trust comes easier with open records and clear lines of communication around root-cause findings and troubleshooting outcomes. In the rare case that a lot drifts from target parameters, we offer full documentation and plan out remediation work, whether that means reprocessing, rebatching, or full replacement.

    Regulatory and Sustainability Practices in Manufacturing

    Years in the business have taught us that no laboratory or plant operates in isolation. Regulatory requirements change at the national and local level, nudging process engineers and QA leads to document controls with precision. From solvent recycling to batch traceability, our practices reflect real knowledge of regulatory oversight and sustainable manufacturing. In-house waste solvent treatment trims environmental loads and allows us to meet present and future rules without scrambling at the last minute.

    Customers engaged in grant-funded or environmentally-conscious projects appreciate updates on how we’ve minimized process residues, switched to less hazardous solvents, and moved to closed-system reactions where feasible. These shifts didn’t come from templates or industry fads—they grew out of everyday troubleshooting with our teams, finding chemistries and equipment setups that cut exposure and waste.

    Supply Chain Matters: Keeping Customers Secure

    Global events present steady challenges to any chemical manufacturer. Secure raw material access and batch scheduling flexibility have shielded many of our clients from delays seen elsewhere. We learned early to keep alternate suppliers on audit-ready status, requalifying lots before supply crunches can take hold. Our QC staff keep deep history on both plant incidents and batch statistics, tracking minor deviations before they snowball.

    We work closely with partners and customers, providing early warnings about transport slowdowns or possible shipment impacts during global disruptions, so R&D timelines or plant routines don’t stall unexpectedly. Many customers return to us for 5-(4-Diethylaminobenzylidene)rhodanine because they need a secure link in their project chain, not just a one-off shipment.

    Staff Contribution: The Real Backbone

    No piece of equipment or spec sheet creates quality alone. Our staff—from the synthesis team to the materials handlers—carry knowledge acquired from years spent troubleshooting, scaling new processes, and chasing performance improvements. Several chemists and plant operators have been with us for decades, bridging the gap between legacy syntheses and new pilot projects. Their ongoing training, certification, and everyday diligence are non-negotiable factors for us and our buyers, especially in a world where chemical quality can make or break multimillion-dollar product lines downstream.

    Anticipating Industry Trends and Meeting New Challenges

    Demand profiles for molecules like 5-(4-Diethylaminobenzylidene)rhodanine change fast in technology-driven sectors. A research group’s new finding can jet a dye or sensor intermediate into the spotlight, driving orders for scales no one predicted. Our setup allows us to run small test batches or shift to larger campaign mode as needed, always matching prior specs and drawing on detailed in-process records compiled over years.

    Emerging challenges, such as ever-tighter impurity limits for optical applications or the adoption of new analytical demands, require not just compliance but innovation. Regular recalibration of our detection equipment, open dialogue with QA, and a willingness to trial novel techniques all keep us responsive and relevant. In some instances, we establish direct partnerships with researchers who need small, custom lots for grant projects, making tweaks to the synthetic route to shave side-product formation or modify handling.

    Quality Is a Practice, Not a Promise

    We don’t approach quality as some marketing catchphrase. Every lot of 5-(4-Diethylaminobenzylidene)rhodanine carries the marks of hands-on adjustment and continual learning from front-line staff. Assay results, spectral checks, and customer application tests track side by side across our records. When a deviation crops up, our solution isn’t to sidestep—it’s to plot, test, and update either procedures or batch conditions, looping in all relevant voices, whether on the plant floor or in management.

    The tradition here isn’t about chasing novelty without justification. Experience has shown that consistent intermediate quality, minimal turnaround delay, and meticulous traceability yield real value for end users. That’s what brings back not only major institutional clients but also specialized buyers with hard-to-meet requirements.

    Welcoming Specific Customer Requirements

    Recent years have brought us closer to our end users, tweaking performance specs or packing designs for new needs. Some buyers request non-standard grades for research into organic electronics or want analytical support data for regulatory filings. Our model accommodates these requests, since we maintain an R&D group working hand in hand with production and QA. This group translates emerging needs into practical adjustments—not adding red tape but providing transparency and realistic project timelines.

    We keep in touch with application chemists at customer facilities, tracking how specification shifts up or down the value stream and advising on likely impacts of minor impurity shifts or changes in batch form. This feedback loop keeps our own chemists in touch with real-world application impacts, informing tweaks in drying protocols, particle size adjustment, or handling guidelines that make a real difference in plant or lab routines.

    Lessons Learned: Substance Over Hype

    Making 5-(4-Diethylaminobenzylidene)rhodanine for end users isn’t just a chemical transaction. It’s a proven commitment, tested in demanding applications and shaped by thousands of hours at the bench and on the plant floor. We look back on cycles of trial, troubleshooting, and improvement, using all the feedback that comes with making a real impact in colorant tech, photonics, and analytical science.

    Manufacturing specialty compounds like this one isn’t a matter of luck or good PR. It’s cumulative knowledge—from careful supplier selection to process airtightness and premium on the direct, no-nonsense honesty that both chemists and their managers value when results matter. That's what keeps this molecule in our portfolio and in the hands of those building the next generation of detection, colorant, and photonic technologies.