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Trimethoxypropylsilane CAS 1067-25-0 QM-W313
CAS No.:1067-25-0
Purity:98%
Place of Origin:Henan China
MF:C6H16O3Si
Appearance:Colorless to Almost colorless liquid
Certification:MSDS,COA,TDS
Free Samples
Purity:98%
Place of Origin:Henan China
MF:C6H16O3Si
Appearance:Colorless to Almost colorless liquid
Certification:MSDS,COA,TDS
Free Samples
Propyltrimethoxysilane is an organosilicon compound belonging to the class of alkoxysilane coupling agents. Its molecular structure features a propyl group (-C₃H₇) and three methoxy groups (-OCH₃) bonded to a central silicon atom, forming a tetrahedral geometry. At room temperature, it appears as a colorless, transparent liquid characterized by low viscosity and good solubility in organic solvents.
The compound readily undergoes hydrolysis in humid environments or under acidic or alkaline conditions to form silanols (Si-OH), which subsequently condense to create a stable siloxane (Si-O-Si) network structure. This property makes it a key raw material for the synthesis of sol-gel materials, finding widespread application in the production of superhydrophobic coatings, transparent optical films, and organic-inorganic hybrid materials. Additionally, propyltrimethoxysilane serves as a cross-linking agent for room-temperature vulcanizing (RTV) silicone rubber, a surface treatment agent for metals and glass, and a modifier for coatings and adhesives, significantly enhancing the mechanical strength, corrosion resistance, and adhesion of the materials.
Product picture:
Comparable Products:
Comparable Products:
Dow Corning Z-6264
Evonik: PTMO
Shinetsu: KBM-3033
Function
Propyltrimethoxysilane is a key precursor for preparing inorganic-organic hybrid materials via the sol-gel process. It can undergo co-hydrolysis and condensation with silicon sources such as tetraethyl orthosilicate (TEOS) to adjust the organic-to-inorganic ratio of the material. By leveraging the siloxane network structure formed through hydrolysis-condensation and the hydrophobicity of the propyl group, superhydrophobic surfaces with extremely low surface energy can be produced; these are used for anti-fogging, anti-fouling, and self-cleaning treatments on substrates like glass and ceramics. Additionally, it is used to prepare transparent, wear-resistant optical films with spectral conversion capabilities, finding wide application in solar photovoltaic modules, architectural glass, and imaging systems.
In the rubber industry, propyltrimethoxysilane is commonly used as a cross-linking agent for room-temperature vulcanized (RTV) silicone rubber. Through hydrolysis and condensation reactions, it forms a siloxane network at room temperature, imparting excellent elasticity, tensile strength, and thermal stability to the rubber. In plastic modification, the addition of propyltrimethoxysilane improves surface wettability, hardness, and chemical corrosion resistance, thereby enhancing the material’s overall performance.
Propyltrimethoxysilane serves as a surface treatment agent to improve the surface properties of inorganic materials such as metals, glass, and ceramics. It forms a dense silane protective film on metal surfaces that effectively blocks the penetration of moisture and oxygen, thereby enhancing corrosion and wear resistance. It is also used to treat glass fiber surfaces, strengthening the interfacial bond with the resin matrix and improving the mechanical strength and wet-state performance of composite materials.
In the textile industry, propyltrimethoxysilane is used for fabric finishing, enhancing water repellency, oil repellency, and wrinkle resistance. In the fields of coatings and adhesives, it acts as an adhesion promoter and cross-linking agent, improving bond strength, hardness, and weather resistance to ensure product reliability in harsh environments.
Technical Specifications:
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Typical Characteristics
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Value
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Appearance
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Colorless transparent liquid
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Purity
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≥97.0%
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Density at 25℃
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0.932g/ml
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Boiling point at 760mmHg
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142℃
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Flash point（closed cup）
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36℃
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Refractive index at 25℃
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1.391
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Package:
1Kg / 200Kg Bucket
Palletized Shipping
Lead Time: 1-7 Days
Shipping Methods: Sea/Air/Express delivery
