Yudu County, Ganzhou, Jiangxi, China sales3@liwei-chem.com 748718781@qq.com
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UV-312 UV Stabilizers

    • Product Name UV-312 UV Stabilizers
    • Chemical Name (IUPAC) Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, C7-9 branched alkyl esters
    • CAS No. 23949-66-8
    • Chemical Formula C20H24O4
    • Form/Physical State Light yellow powder
    • Factory Site Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry sales3@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    163874

    Chemical Name Benzotriazole UV absorber
    Cas Number 25973-55-1
    Appearance Light yellow powder or granules
    Molecular Formula C13H11N3O
    Molecular Weight 225.25 g/mol
    Melting Point 133-137°C
    Solubility Insoluble in water, soluble in organic solvents
    Density 1.36 g/cm3
    Purity ≥99%
    Main Application UV stabilization of plastics, coatings, and synthetic fibers
    Light Stability Excellent photostability
    Recommended Dosage 0.1-0.5% by weight
    Toxicity Low toxicity under recommended conditions
    Storage Conditions Store in a cool, dry place

    As an accredited UV-312 UV Stabilizers factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing UV-312 UV Stabilizers are packaged in a 25 kg fiber drum with inner polyethylene bag, ensuring safe, moisture-proof storage.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for UV-312 UV Stabilizers: 9MT per 20′ FCL, packed in 25kg fiber drums with pallets.
    Shipping UV-312 UV Stabilizers are shipped in tightly sealed, inner-lined fiber drums or polyethylene bags, typically in 25 kg packages, to prevent contamination and moisture exposure. During transport, the chemical is handled as non-hazardous but must be kept away from direct sunlight, heat, and incompatible substances to ensure product integrity and safety.
    Storage UV-312 UV Stabilizers should be stored in a cool, dry, and well-ventilated area away from direct sunlight, heat sources, and moisture. Keep the container tightly sealed when not in use to prevent contamination. Store away from oxidizing agents and strong acids. Ensure proper labeling and handle in accordance with standard chemical safety procedures.
    Shelf Life UV-312 UV Stabilizer typically has a shelf life of 2 years when stored in a cool, dry, well-ventilated area.
    Free Quote

    Competitive UV-312 UV Stabilizers prices that fit your budget—flexible terms and customized quotes for every order.

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    Tel: +8615365186327

    Email: sales3@liwei-chem.com

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    Certification & Compliance
    More Introduction

    Introducing UV-312 UV Stabilizer: Reliable Protection for Modern Polymers

    Proven Performance Backed by Years of Experience

    Manufacturing chemicals without understanding the full production cycle can quickly create problems that don’t reveal themselves until it’s too late. At our facility, we produce UV-312 UV Stabilizer with decades of hands-on knowledge, drawing from the long challenges of weathering failure, brittle plastics, and unexpected complaints about faded color. We’ve lived through raw material fluctuations, worked on real-life customer complaints, and know how one missed step can undermine an entire polymer line. That experience matters, not just for peace of mind, but for product integrity in every shipment leaving our plant.

    What Sets UV-312 Apart

    UV-312 isn’t the only UV absorber on the market. What distinguishes it is the strong balance it offers between volatility, compatibility, and long-term stability in demanding applications. This stabilizer, built on benzotriazole chemistry, keeps cost efficiency in focus without sacrificing the shielding power that industries expect for outdoor plastics. Real-world applications push materials harder each year, and our UV-312 consistently delivers. It works well not only in standard polyolefins and polystyrene but also shows a remarkable effect in tough engineering plastics, including polycarbonates, polyesters, and certain polyurethanes where other additives might fail or cause haze.

    Processors dealing with thin films know how the market demands clarity and long service life. UV-312’s low volatility helps reduce migration even at high process temperatures, maintaining visual and mechanical properties throughout multiple seasons of outdoor exposure. Field failures brought us back to the lab more than once, so each improvement is rooted in practical trials—not just literature reports. That makes us trust what this stabilizer does out in the sun and rain.

    Consistent Production Means Fewer Surprises

    As a manufacturer, we control the synthesis steps that determine particle size, purity, and free amine content. Any UV additive can include unwanted by-products that degrade end-use properties if left unchecked—you notice it as blooming, yellowing, or resin incompatibility. Engineers on our team measure these parameters batch by batch, knowing that a uniform additive means easier dosing and fewer phone calls about unexpected failures. There are no shortcuts here; even small changes in input quality quickly show up in finished parts.

    UV-312’s suitability for both masterbatch and direct compounding comes partly from this production control. We designed it for high-melt applications after customer feedback highlighted how poor dispersibility led to streaks and inconsistent protection. Since then, our process modifications have given processors more flexibility, regardless of compounding speed or resin grade.

    Addressing Market Expectations for Durability

    The rise of consumer electronics, automotive panels, and garden equipment made outdoor durability a non-negotiable standard. Early stabilizers worked for basic needs but failed under stress from high UV, heat, and humidity. The market learned quickly that discoloration and hazing don’t just hurt appearance—they cost valuable brand reputation. UV-312 meets this demand by absorbing harmful UV wavelengths, turning them into harmless energy, and dissipating it safely without interacting with pigments, optical brighteners, or clarity agents used downstream. Customers appreciate how they can fine-tune loading without disturbing surface gloss or causing fogginess in transparent components.

    Tests across various latitudes have shown that UV-312’s performance stays steady even where solar radiation peaks, such as sub-tropical installations or high-altitude locations. Paint and coating makers who previously relied on older stabilizers approached us after months of yellowing or microcrack formation. Once adopted, UV-312 consistently reduced claim rates, giving both processors and end users a margin that often spells the difference between return business and expensive recalls.

    Comparisons With Other UV Stabilizers

    Many ask whether to choose UV-312 over HALS (Hindered Amine Light Stabilizer) or different benzophenone-based additives. In our ongoing field trials, we’ve documented some clear differences. While HALS excels in preventing polymer chain breakdown, it sometimes struggles with resin types that contain high amounts of acidic groups—the interference leads to lower effectiveness and color instability. Benzophenones can offer some coverage, but tend to volatilize or cause unwanted migration, especially in thin-section parts.

    UV-312 has shown superior compatibility with polycarbonate and polyester films, where haze or gas fading caused problems in the past. In masterbatches, the stabilizer keeps a low profile, appearing nearly invisible in finished goods. Where some additives contribute to plate-out deposits on tooling over long runs, our experience has shown UV-312’s resistance to this type of buildup helps keep lines running while holding maintenance costs in check. We have documented reduced downtime across clients who run high-throughput extrusion lines.

    Processors working with automotive or construction plastics often look for a solution that won’t interact adversely with flame retardants or antistats. In formulations using UV-312, there’s a proven track record of stable color retention and little to no interaction with these critical additives. Unlike certain alternatives, our stabilizer does not induce fogging in glazing or lamp cover applications. We manufacture according to strict analytical protocols to make sure each drum matches these requirements, because batch inconsistencies quickly translate into warranty nightmares for our customers.

    Committed to Real-World Testing

    Years of troubleshooting on the factory floor have shown us that success depends on how additives behave once polymers hit sunlight, humidity, and temperature swings. Paper data doesn’t replace field weathering. Our R&D team partners with end users to test every new batch in accelerated weathering chambers and natural exposure sites—across continents and climates. These joint studies revealed, for example, that injection molded parts exposed to tropical cycles resisted embrittlement and retained flexibility longer with our UV-312 than those using older grades.

    We also know laboratory purity means nothing if it doesn’t translate to process stability. As a chemical manufacturer, we take direct responsibility for helping clients optimize dosing and mixing, based on feedback from compounding lines and long-term storage tests. Industry standards continue to evolve, pushing for higher transparency and greener solutions. Our innovation process moves forward only after repeated cycles of customer validation and application-specific feedback. Through frequent visits and tests on finished molded parts, we’ve built a knowledge base far beyond product brochures.

    Handling Demands for Safer, Cleaner Additives

    Over the last decade, industries sought to reduce hazardous components in each step of production. We responded by lowering impurity levels that can cause regulatory headaches or added metal to finished products. Early on, we shifted away from heavy-metal catalysts and optimized purification to meet both local and international standards. With REACH and other similar guidelines always front of mind, we carefully source raw materials and monitor intermediates to keep UV-312 compliant worldwide. Our facilities maintain rigorous recordkeeping for every batch, so customers can trace back and demonstrate regulatory alignment when needed.

    Environmental health has become an essential part of production, driven by stricter law, customer demand, and shared responsibility. Minimizing waste, recycling solvents, and limiting emissions is not just a regulatory checkbox for us; our teams see it as a practical part of long-term competitiveness. Many of our employees’ families live in the same communities as our manufacturing plants. A safe, sustainable stabilizer matters on both a technical and human level.

    Improving Productivity on the Line

    Feedback from plastics processors shapes each improvement we make. One area that often comes up is material flow and handling. If a UV additive clumps or forms dust, it makes accurate dosing difficult and introduces operator safety issues. To address this, we made adjustments to the grind and flow characteristics of UV-312, increasing the bulk density and free-flowing properties without sacrificing dispersibility in the melt. This might seem like a small adjustment, but on a production line with automated feeders, it saves labor and reduces cleanup.

    Another pain point revolves around feeding rates and loss during changeovers. We have tailored packaging and intermediate formulations so the stabilizer remains processable during extended storage or after partial use. These measures, while subtle, come from hearing directly about mixing errors that led to under-performing films or yellowed profiles. Our customers’ main priorities—speed, consistency, quality—remain at the core of how we manufacture and deliver every shipment.

    Application Experience in Key Industries

    Long before regulators imposed their latest rounds of guidelines, equipment manufacturers in building and agriculture felt the pressure to lengthen the lifespan of exterior panels and greenhouse films. Sunlight weakens polyolefins rapidly without protection, which means lost investment for growers and unscheduled maintenance for contractors. We worked directly with compounders to balance additive loadings, minimize cost, and preserve the mechanical strength needed across several seasons.

    In the automotive sector, interior and exterior plastics face years of temperature cycling, periodic cleaning, and sunlight exposure. Car makers want deep black colors to stay rich, without gloss reduction or white haze creeping in after just one summer. Our stabilizer’s resistance to plate-out has been validated on painted bumpers, instrument panels, and modern LED lamp housings. We conducted tests alongside tier-one suppliers, mapping pigment stability and surface aging under real street conditions.

    The packaging industry faces heavy scrutiny regarding safety and visual appeal, especially for food-contact films and containers. UV-312’s low migration profile makes it suitable for many grades, while its physical form handles well in automated processing environments. Our experience across all these sectors has shown that real performance comes from direct collaboration, not hidden formulations or rushed modifications. The blend of chemistry and years of process trials pays off in fewer complaints and higher customer loyalty.

    Supporting Product Development and Problem Solving

    Chemicals rarely exist in isolation, and new trends call for new blends and applications. We don’t just supply a UV stabilizer—we work with compounding specialists, extrusion engineers, and product designers to ensure finished goods deliver durability, color retention, and longevity under field conditions. Sometimes a resin supplier changes their base formulation, or a pigment ban forces reformulation. Our technical teams are quick to support necessary trials and help interpret the results. Several times each year, clients invite us to their production sites to watch trials firsthand, allowing tweaks and adjustments on the spot. We view every installation as a partnership, not just a transaction.

    When customers face a sudden failure or call about unusual color changes, our chemists dive in to analyze the situation, sometimes running stress-to-failure tests or re-checking weathering data. We believe in transparency and honest feedback, sharing not just what works, but what may fall short based on boundary conditions. If another approach would serve better, we say so, because long-term trust means more to us than a one-off sale.

    Reliability Over Instant Solutions

    There are always new additives promising better durability or faster results. A solid record in actual use still means more to us than claims that can’t survive outdoor tests or real compounding trial runs. Our labs keep direct lines open to factories in regions with demanding exposure conditions—hot, humid, cold, or dry. Our stabilizer has supported producers through unexpected UV events, ensuring film and part failures don’t lead to costly recalls.

    We don’t believe in a one-size-fits-all answer. Each client brings their own processing quirks, and our production lines have adjusted over time to deliver batches suited to local market needs. We remain committed to learning from our client’s field experience, helping them adapt to shifting consumer designs and application requests, and responding fast to feedback on quality or performance.

    Ongoing Investment in Quality and Knowledge Sharing

    Our labs test every outgoing batch with UV absorbance and purity instruments calibrated to international standards. Data gets tracked over the long term, with problem-solving teams ready to respond if trends suggest a risk to product consistency. We invest in training both our own staff and our client’s production teams to help maximize stability and product safety. Application seminars have opened conversations between our chemists and plastics processors, surfacing new requirements and keeping us sharp as new technologies enter the field.

    From the ground up, our process and product improvements reflect demands from processors, QA managers, and end-users. Every lesson learned—whether from a failed part, a successful launch, or a new compliance guideline—feeds directly back into our manufacturing standards. On-the-ground knowledge remains our biggest asset, shaping not just UV-312, but the whole family of stabilizers we produce. Genuine commitment to reliability and safety is built into each batch and every recommendation we share.

    If there’s a new regulatory change, a shift in resin grades, or an unexpected end-use trend, we make it our business to gather real data, interpret results in partnership with clients, and act fast to address challenges. Our values grow from long-term observation of what works—always grounded in the feedback loop between lab, production floor, and real-world field use.

    A Strong Foundation for Tomorrow’s Challenges

    Every outdoor application brings its own blend of requirements, and we stand ready to meet them with both experience and fresh thinking. UV-312 isn’t just another product on a datasheet. Its performance and value come from years spent learning on the job, responding to calls when something isn’t right, and celebrating with our customers when their products outperform expectations. That’s the level of hands-on commitment we bring to every drum we ship and every conversation we start about durable, stable plastics.