Tetraethyl orthosilicate

Synonym: TEOS, Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, Tetraethoxysilane, Tetraethoxysilicon(IV), Tetraethyl silicate
CAS Number 78-10-4 | MDL Number MFCD00009062 | EC Number 201-083-8
Product Tetraethyl orthosilicate has been discontinued.

Tetraethyl orthosilicate Chemical Structure

Product CodeSI8104
CAS Number78-10-4
Assay (purity)98.0%+
Purity methodby GC
Molecular weight208.33
Appearancecolorless liquid
Melting point-82.5C
Boiling point168C
Molecular formulaC8H20O4Si
Linear formulaSi(OC2H5)4

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing Tetraethyl orthosilicate contact us at sales@ereztech.com

Safety information

Signal wordWARNING
Hazard statementsH226, H319, H332, H335
Precautionary statementsP210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P312, P337+P313, P370+P378, P403+P233, P403+P235, P405, P501
Transport descriptionTETRAETHYL SILICATE
Hazardous class3
Packing groupIII
In TSCA registryYes
Flash point45C

Certificates of analysis (CoA)

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External identifiers for TEOS

Pubchem CID6517
IUPAC Nametetraethylsilicate
InchI IdentifierInChI=1S/C8H20O4Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H2,1-4H3

Ereztech synthesizes and sells additional SI-compounds.