3-(Methacryloxy)propylmethyldiethoxysilane, often known under the trade name KH-572, stands as a widely-used organosilane coupling agent, bridging the gap between organic polymers and inorganic substrates. This chemical belongs to the organofunctional silanes category, bringing the reactive methacryloxy group and silane functional groups together in one molecule. As a raw material, it supports formulations for advanced materials, sealants, coatings, and composites. Its systematic approach allows manufacturers to tune surfaces, tougher adhesion, and compatibility—crucial for high-performance composites and hybrid materials. The HS Code for this raw material rests in the 2920909090 range, reflecting its specialized use and regulation, along with customs or trade documentation requirements.
C13H26O5Si tells the molecular story. This formula speaks to the backbone provided by propylmethyldiethoxysilane, married to a methacryloxy functional group. The combination gives a molecule that can react on both the organic and inorganic side of any formulation, making its use spread across diverse industries. You will see a Si atom tethered to a three-carbon propyl chain, which is then functionalized with both a methacryloyl group and diethoxy substituents. The interplay of these building blocks gives rise to unique improvements in surface reactivity and crosslinking, vital for high-performance resins and coatings.
This material comes as a clear, colorless to pale yellow liquid. Its density sits at about 1.02–1.04 g/cm3 at 25°C, which keeps it relatively stable and easy to handle in both bulk and laboratory scale. With a boiling range near 290°C and a flash point well above standard room temperatures (often about 96°C), it stays less volatile than many comparable silanes. It doesn’t form flakes, powder, pearls, or crystal forms under standard conditions, since its baseline is liquid. Occasionally, storage in cooler temperatures can yield white precipitates, but good handling ensures it flows and mixes well. Dissolving in organic solvents like alcohols, esters, and hydrocarbons, it fits well in hybrid solutions used across multiple industries.
Manufacturers reach for 3-(Methacryloxy)propylmethyldiethoxysilane when developing advanced composites, adhesives, sealants, or coatings. In fiberglass-reinforced plastics, this compound joins unsaturated polyester resins and the glass fiber reinforcement, boosting bond strength and durability. Acrylate and methacrylate adhesives pick up greater water resistance and longer-lasting bonds through its presence. Floor coatings, automotive paints, and electronics potting compounds also benefit, since this silane bridges the molecular gap and supports crosslinking. Manufacturers in my experience appreciate faster cure rates, tougher finished parts, and fewer adhesion failures. On construction sites, concrete sealers and repair products built with 3-(Methacryloxy)propylmethyldiethoxysilane show less cracking, peeling, or surface degradation. The raw material’s effectiveness comes from real chemical synergy rather than a generic effect, giving manufacturers something reliable to count on for many years.
Industrial buyers look for high purity—typically around 98% minimum for most applications. Acid value usually tests below 0.3 mg KOH/g, and low water content below 0.1% protects the silane’s reactivity. Storage drums hold between 25 and 200 liters, usually in sealed steel or HDPE containers, kept in warehouses away from strong acids, moisture, or open flames. Deliveries include material safety data and full traceability, helping everyone down the line keep tabs on what goes into their products.
Handling any reactive silane means looking closely at safety. Vapors or direct skin contact can cause irritation, and inhaling mist or fumes invites respiratory discomfort. Wearing gloves, goggles, and protective clothing stands as good practice, with proper ventilation needed in workspaces. This silane doesn’t carry the same explosion risk as low-boiling solvents but still deserves respect—its flash point calls for careful attention, especially during bulk unloading or transfer. Environmental considerations play a role, since releases into drains or soil risk long-term effects on water systems. Waste streams need to follow local hazardous disposal routing. While safer than some hardening agents or resins, this agent brings enough risk that training and spill-response planning makes a real difference. In regulated geographies, storage thresholds and documentation requirements kick in, reminding everyone this is no ordinary raw material.
Chemicals like 3-(Methacryloxy)propylmethyldiethoxysilane get regular updates on their classification and permissible exposure, partly because industry practices keep shifting. In recent years, workplaces push for more closed mixing systems and better worker protection, and the chemical industry’s experience proves that paying attention to finer details matters. You want predictable results, fewer accidents, and clear-cut paperwork in case regulators show up. Substituting less effective or legacy surface modifiers in composites pretty quickly reminds you how much value this silane brings; parts bond better, last longer, and resist environments others just can’t handle. Investing in robust safety and spill systems, coupled with ongoing employee training, keeps the material as an asset—not a liability—in any manufacturing operation. Responsible sourcing also matters, since a fully traceable supply chain helps companies manage recalls or audits when regulations shift or buyers ask tough questions.
Durability and adhesion keep climbing in importance as products—especially in transport, energy, and infrastructure—need longer life and more extreme performance. Keeping 3-(Methacryloxy)propylmethyldiethoxysilane in the toolbox helps many manufacturers raise their standards and deliver reliably. With growing attention to sustainability and safe chemical practices, it falls to all of us to document use, monitor exposures, and upgrade containment systems where necessary. Committing to lifecycle management of chemicals—from sourcing to disposal—makes sure the future of advanced materials stays bright, and that risks stay low both for workers and the environment. Daily experience reinforces that knowing your materials, inside and out, sets the foundation for innovation and trust—in the factory and across global trade.
