Polyethyl Silicate SI40

Chemical Name:Polyethyl Silicate SI40


CAS No.:11099-06-2


Product Categories:Organic Chemistry


Molecular Formula:C₂H₆O₃Si


Formula Weight:106.15274


Appearance:Colorless transparent liquid


Packaging Method:25KG/200L Plastic Drum


Type Of Transportation:By Air/By Sea/By Train/By Express


Sample:Available


Polyethyl Silicate SI40

Product Description Of

Polyethyl Silicate SI40

Density (25°C): 0.920–1.020 g/cm³

Refractive Index (25°C): 1.400–1.430

Viscosity (25°C): Low viscosity fluid

Flash Point: About 45 °C

Purity: ≥98%

Solubility: Soluble in ethanol, toluene, xylene and most organic solvents; sensitive to moisture, hydrolyzes slowly in humid environment and releases ethanol.

Chemical Characteristics

It is a low molecular weight oligomer formed by hydrolysis and condensation of methyltriethoxysilane. The molecular structure contains methyl hydrophobic groups and residual hydrolyzable ethoxy groups. It can cure with moisture at room temperature to form a dense Si-O-Si inorganic network film, featuring neutral curing, excellent hydrophobicity, weather resistance and no corrosion to substrates.


Chemical Properties Of

Polyethyl Silicate SI40
chemical namePolyethyl Silicate SI40
abbreviation
colourcolorless clear liquid
Purity (%)99%
Density (25℃)1.03-1.10
Refractive index (25℃)1.4100-1.4200



Safety Information Of

Polyethyl Silicate SI40
dangerous markT+
Hazard Category code21/22-26-34-42
safety instructions23-26-28-36/37/39-45
Dangerous goods transportation numberUN 3390 6.1/PG 1
WGK Germany3
RTECS
VV6691000



Product Application Of

Polyethyl Silicate SI40

Building Waterproofing & Protective Agent

Used as penetrating hydrophobic agent for concrete, stone, brick, cement mortar and exterior wall materials. It forms breathable and water-repellent coating without changing the original appearance of the substrate, providing anti-permeability, frost resistance and aging resistance.

Crosslinking Agent for Neutral RTV Silicone Rubber

Served as curing crosslinker for one-component neutral silicone sealant and room temperature vulcanized silicone rubber. It features stable curing, good elasticity and no corrosion to metal materials.

Raw Material for Silicone Resin & Coatings

Used for synthesizing methyl silicone resin, high temperature resistant coatings and weather-proof inorganic hybrid coatings. It improves film hardness, abrasion resistance, water resistance and outdoor weatherability.

Surface Modification of Inorganic Materials

Applied to surface treatment of glass, ceramic, optical materials and inorganic fillers such as silica and calcium carbonate. It enhances hydrophobicity, antifouling performance and compatibility with organic resins.

Release Agent & Industrial Additive

Used as high-efficiency release agent for rubber and plastic molds, with low surface energy, good demolding effect and no residue.

Cultural Relics & Ancient Building Protection

Suitable for moisture-proof, anti-corrosion and weathering protection of historic buildings, stone relics and wood materials.



Packaging Method Of

Polyethyl Silicate SI40
  • Galvanized-iron-drum
  • Galvanized-iron-drum-2
  • Galvanized-iron-drum-3
  • Galvanized-iron-drum-4

Factory Show

  • Galvanized-iron-drum-4
  • 34
  • 3m-4
  • 2-4