Methyltriethoxysilane

Methyltriethoxysilane is an organosilicon compound with the chemical formula C₇H₁₈O₃Si and CAS number 2031-67-6. At room temperature and atmospheric pressure, it appears as a colorless, transparent liquid. It is insoluble in water but undergoes slow hydrolysis when exposed to moisture. It is primarily used as a cross-linking agent for one-component RTV (room temperature vulcanizing) silicone rubber, and also serves as a key raw material for producing silicone resins, phenylmethyl silicone oils, and waterproofing agents. The ethoxy groups in its molecular structure exhibit high reactivity, capable of participating in hydrolysis and condensation reactions to form siloxane bonds. These properties make it widely applicable in sol-gel processes and polymer materials.

Product Information:

● Chemical Name: Methyltriethoxysilane

● Molecular Formula: CH₃Si(OC₂H₅)₃

● Molecular Weight: 178.30

● Chemical Structure: 

● CAS Registry Number: 2031-67-6

Physical Properties:

● Density (25 ℃): 0.8900 – 0.9000 g/cm³

● Boiling Point: 141 – 143 ℃

● Flash Point: 23 ℃

● Appearance: Colorless, transparent liquid

● Solubility: Hydrolyzes upon contact with water; soluble in alcohols, aliphatic hydrocarbons, and aromatic hydrocarbons

Technical Specifications:

● Purity: ≥99.0%

● Appearance: Colorless, transparent liquid

● pH: 5–7

Applications:

● Used as a cross-linking agent for one-component RTV silicone rubber, and as a raw material for silicone resins; also suitable for treating various inorganic fillers.

● A main raw material for silicone resins, fabric finishes, phenylmethyl silicone oils, etc.

● Used in the production of organosilicon glass resins.

● Applied in the rubber and pharmaceutical industries as a raw material for organosilicon polymers.

● An important raw material for manufacturing silicone resins, phenylmethyl silicone oils, and waterproofing agents. Due to its ease of hydrolysis, it can react with alkali metal hydroxides to form alkali metal silanolates. It is also used as a cross-linking agent for room-temperature vulcanizing silicone rubber.

Packaging and Storage:

1. Available in 5 L, 10 L, 25 L, and 200 L polyethylene drums, or 1000 L IBC containers. Customized packaging can be provided upon request—please specify in your order.

2. Storage: Must be stored in a tightly sealed container in a cool, well-ventilated area, away from water, heat, and open flames.

Disclaimer:

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