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Tetraethyl Orthosilicate

Slightly odorous, slightly soluble in water, soluble in ethanol and ether. It becomes cloudy gradually in humid air, and precipitates silicic acid after standing still. It is stable when there is no moisture and does not decompose during distillation.
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Product description
Parameters
Chinese Name Ethyl orthosilicate Melting Point -77℃
English Name Tetraethyl orthosilicate Boiling Point 165-169℃
Chemical Formula C8H20O4Si Density 0.93
Relative Molecular Mass 208.33 Exterior Colorless transparent liquid
CAS Registry Number 74-10-4 Flash Point 43℃

Structural Formula
Tetraethyl orthosilicate
Characteristic
Slightly odorous, slightly soluble in water, soluble in ethanol and ether. It becomes cloudy gradually in humid air, and precipitates silicic acid after standing still. It is stable when there is no moisture and does not decompose during distillation. It is miscible with ethanol and ether, slightly soluble in benzene, almost insoluble in water, but can be gradually decomposed into silicon oxide by water. Flammable, narcotic and irritating at high concentrations.
Use
Mainly used in the manufacture of chemical resistant coatings, aerogels and heat-resistant coatings, organic silicon solvents and precision casting adhesives. The metal surface treated with ethyl orthosilicate vapor can be anticorrosive and waterproof, and ethyl orthosilicate can be used to Silicon infiltration on the metal surface and treatment of optical glass can increase the light transmittance. After it is completely hydrolyzed, extremely fine silicon oxide powder is produced, which is used to make phosphors. It can also improve the performance of other resins and the raw material for making silicon polymer compounds. The aerogel obtained by supercritically removing the solvent after hydrolysis of ethyl orthosilicate and trimethyl has the advantages of low specific gravity and good thermal insulation performance. It is widely used in the aerospace and defense fields and has been promoted in the civil field.
Quality Index
Comply with Q/320483 HYH001-2000 standard
Project Index
SiO2-28 SiO2-32 SiO2-40
SiO2 content% 28.0-29.0 32.0-34.0 40.0-42.0
Relative Density d20℃ 0.93-0.94 0.97-1.00 1.04-1.07
Acidity (in Hcl) ≤0.1 ≤0.1 ≤0.1
Low Distillate (below 110℃)% ≤2 ≤2 ≤3
Ethanol dissolution test Qualified Qualified Qualified

Package
200L plastic barrel
Storage and Transportation
Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 37℃. Keep the container tightly closed. It should be stored separately from oxidants, acids, and alkalis, and avoid mixed storage. Use explosion-proof lighting and ventilation facilities. It is forbidden to use mechanical equipment and tools that easily generate sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable storage materials.
 
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