What is 3-Aminopropyldimethoxymethylsilane and How to Use It?

3-Aminopropyldimethoxymethylsilane (CAS No. 3663-44-3) is a silane coupling agent that can be used to improve the adhesion and compatibility of various materials, such as polymers, metals, ceramics and glass. It can also act as a crosslinking agent and a curing agent for epoxy resins, polyurethanes and silicone rubbers.

Structure and Properties of 3-Aminopropyldimethoxymethylsilane

The molecular formula of 3-Aminopropyldimethoxymethylsilane is C6H17NO2Si and its molecular weight is 163.29 g/mol. It has a linear structure with a silicon atom bonded to a methyl group, two methoxy groups and a propylamine group. The chemical structure is shown below:

3-Aminopropyldimethoxymethylsilane CAS No. 3663-44-3

3-Aminopropyldimethoxymethylsilane is a colorless to pale yellow liquid at room temperature. It has a boiling point of 84 °C at 13 mmHg and a flash point of 77 °C. It has a density of 0.95 g/mL and a refractive index of 1.43. It is soluble in water and organic solvents, such as alcohols, ethers and hydrocarbons.

Applications of 3-Aminopropyldimethoxymethylsilane

3-Aminopropyldimethoxymethylsilane can be used as a coupling agent to enhance the adhesion and compatibility between different materials, such as polymers, metals, ceramics and glass. It can react with hydroxyl groups on the surface of these materials and form covalent bonds with them. It can also react with other functional groups on the polymer chains, such as carboxyl, epoxy, isocyanate and vinyl groups, and form crosslinks or grafts with them.

Some examples of the applications of 3-Aminopropyldimethoxymethylsilane are:

  • Improving the mechanical properties and thermal stability of glass fiber reinforced plastics (GFRP) by treating the glass fibers with 3-Aminopropyldimethoxymethylsilane before impregnating them with epoxy resin.
  • Enhancing the adhesion and corrosion resistance of metal coatings on steel substrates by applying 3-Aminopropyldimethoxymethylsilane as a primer before coating.
  • Increasing the hydrophobicity and durability of silica gel by modifying its surface with 3-Aminopropyldimethoxymethylsilane.
  • Improving the dispersion and compatibility of silica nanoparticles in polyurethane foam by grafting 3-Aminopropyldimethoxymethylsilane onto the nanoparticles.

Safety and Handling of 3-Aminopropyldimethoxymethylsilane

3-Aminopropyldimethoxymethylsilane is classified as a dangerous substance according to the UN classification. It is flammable and corrosive. It can cause severe skin burns and eye damage. It can also release flammable vapors when exposed to moisture or heat.

Therefore, when handling 3-Aminopropyldimethoxymethylsilane, the following precautions should be taken:

  • Wear protective gloves, clothing, eyewear and face shield.
  • Avoid contact with skin, eyes and clothing.
  • Keep away from heat, sparks, open flames and hot surfaces.
  • Store in a cool, dry and well-ventilated place.
  • Dispose of the waste and container according to local regulations.

Where to Buy 3-Aminopropyldimethoxymethylsilane?

If you are looking for high-quality 3-Aminopropyldimethoxymethylsilane for your research or industrial applications, you can buy it from Shandong Pengrun New Materials Co., Ltd., a leading manufacturer and supplier of organic silicon new materials worldwide. Pengrun Ltd offers 3-Aminopropyldimethoxymethylsilane with a purity of >97% (GC) (T) in various package sizes. You can also request a quote for bulk orders or custom synthesis.

To learn more about 3-Aminopropyldimethoxymethylsilane and other silane coupling agents, please visit the Pengrun Ltd website or contact their customer service.

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