Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Product Profile
- Full IUPAC Name: 3-(trimethoxysilyl)propyl 2-methylprop-2-enoate
- Aliases: KH-570, MPS, 3-(Trimethoxysilyl)propyl methacrylate
- CAS Number: 2530-85-0
- EINECS: 219-785-8
- Molecular Formula: C10H20O5Si
- Molecular Weight: 248.35
- Chemical Classification: Silane coupling agent, organosilicon functional monomer, crosslinking modifier
- Core Advantages
Dual functional structure with polymerizable methacrylate group and hydrolyzable trimethoxysilyl group. Forms chemical bonding between inorganic fillers and organic polymer matrix. Improves adhesion, mechanical strength, water resistance and weather resistance of composite materials. Widely used in composite resin, glass fiber sizing, coating, adhesive, UV-curable material and dental composite fields.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: Colorless transparent low-viscosity liquid
- Odor: Mild acrylate ester odor
- Solubility: Miscible with ethanol, methanol, toluene, acetone, most organic solvents; hydrolyzes slowly in water
- Boiling Point: 255–258 °C
- Refractive Index nD20: 1.428–1.432
- Density (20℃): 1.040–1.050 g/cm3
- Flash Point: 108 °C
- Hygroscopy: Slightly hygroscopic, sensitive to moisture for silanol hydrolysis
2.2 Chemical Properties
- Dual Reactive Functional Groups
- Methacrylate double bond: Free-radical polymerization, copolymerization with acrylic, vinyl, polyester resins under UV or thermal initiation
- Trimethoxysilyl group: Hydrolyzes in moisture to generate silanol, condenses with hydroxyl groups on glass, silica, metal oxide surfaces
- Hydrolysis Characteristic: Stable under anhydrous sealed condition; methoxy groups hydrolyze gradually in humid air to form silanol oligomers
- Thermal Stability: Stable below 150°C; double bond self-polymerization occurs at high temperature without polymerization inhibitor
- Acid & Alkali Stability: Hydrolysis accelerates under weak acid catalysis; strong alkali causes rapid condensation and gelation
- Photostability: UV irradiation triggers spontaneous polymerization of acrylate double bonds
- Compatibility: Compatible with all acrylic monomers, unsaturated resins, organic solvents; incompatible with bulk water and strong alkaline solutions
3. Main Application Fields
3.1 Glass Fiber Sizing Agent (Core Usage)
Surface treatment coupling agent for glass fiber reinforced plastic; enhances interfacial bonding between glass fiber and acrylic/unsaturated polyester matrix, improves tensile strength and water resistance of composites.
3.2 UV-Curable Coating & Adhesive Modifier
Crosslinking monomer for UV varnish, printing ink and optical adhesive; boosts adhesion on glass, aluminum, silica substrates.
3.3 Dental Composite Resin Raw Material
Silane surface modifier for inorganic nano-filler in dental filling resin to increase mechanical performance and biocompatibility.
3.4 Filler Surface Treatment Agent
Surface modification of silica, talc, aluminum hydroxide for plastic, silicone and rubber composite systems.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 2530-85-0 |
| Molecular Formula | C10H20O5Si |
| Molecular Weight | 248.35 |
| Appearance | Colorless transparent liquid |
| GC Purity | Industrial Grade ≥98.0%; Electronic Grade ≥99.0% |
| Refractive Index (20℃) | 1.428–1.432 |
| Density (20℃) | 1.040–1.050 g/cm3 |
| Water Content (KF) | ≤0.10% |
| Color (APHA) | ≤30 |
| Methanol Residue | ≤0.30% |
| Bulk Package | 200L sealed steel drum with nitrogen protection |
| Sample Package | 1L / 5L nitrogen-filled plastic bottle |
| Storage Requirements | Hermetic nitrogen-sealed cool dry warehouse ≤25℃; fully isolate humid air, water and strong light to prevent hydrolysis and self-polymerization |
| Transportation Rule | Non-hazardous organosilicon coupling agent; sealed moisture-proof packaging required during transit |
| Shelf Life | 12 months under intact nitrogen-sealed packaging |
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