Overview
3-(Trimethoxysilyl)propyl methacrylate (CAS 2530-85-0 ) is a bifunctional silane coupling agent that bridges organic polymer matrices with inorganic substrates. It bonds chemically to both surfaces, improving adhesion and moisture resistance.
This versatile chemical improves composite integrity across demanding industrial applications. In fiber-reinforced composites for automotive and aerospace structures, it pre-treats glass fibers to strengthen the fiber-resin interface.
This treatment directly improves mechanical performance and service life in harsh environments. Coatings formulators incorporate it into UV-curable and thermally cured systems to enhance adhesion to glass, metal, and mineral substrates.
In adhesives and sealants, it functions as a reactive crosslinker that improves durability under humid or thermally cycled conditions. This ensures long-term stability for industrial bonding applications.
Electronics manufacturers use it as a surface primer for encapsulants and underfill resins. Reliable adhesion to silicon and ceramic substrates is critical to the long-term reliability of modern electronic components.
The product is supplied as a clear liquid, typically in drum and IBC quantities for industrial buyers. It is available in technical grade, with high-purity grades offered for electronics and specialty coating applications.
Standard specifications align with recognized silane coupling agent benchmarks. The product is commonly inhibited with a polymerization inhibitor for storage stability and consistent performance during manufacturing processes.
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Physical Properties
| Melting Point | <-50 °C |
| Boiling Point | 190 °C |
| Density | 1.045 g/cm³ @ Temp: 25 °C |
| Flash Point | 198 °F |
| Appearance | Colorless transparent liquid |
| Color | Clear |
| Form | Liquid |
| Water Solubility | Miscible with water. |
| Vapor Pressure | 0-12790Pa at 20-25℃ |
| Refractive Index | n 20/D 1.431(lit.) |
| Log P | -0.9-2.1 at 20-21℃ |
Safety & Handling
Warning GHS07 Hazard Statements H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29319099 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 2530-85-0
- EC Number
- 219-785-8
- Mol. Weight
- 248.35
- HS Code
- 29319099
- Category
- Monomers & Building Blocks