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Tetrapropoxysilane

Tetrapropoxysilane Basic information
Introduction Applications
Product Name:Tetrapropoxysilane
Synonyms:Tetrapropoxysilane, 99+%;Tetra-n-propoxysilane(Tetrapropylorthosilicate);TETRAPROPOXYLSILANE;Tetra-n-propoxysilane, 98+%;Orthosilicic acid tetrapropyl ester;SILICON TETRA-N-PROPOXIDE;TETRAPROPOXYSILANE;TETRAPROPYL ORTHOSILICATE
CAS:682-01-9
MF:C12H28O4Si
MW:264.43
EINECS:211-659-0
Product Categories:Chemical Synthesis;Materials Science;Micro/NanoElectronics;Organometallic Reagents;Organosilicon;Silicates;Silicon;Solution Deposition Precursors;Si (Classes of Silicon Compounds);Si-O Compounds;Tetraalkoxysilanes;Crosslinkers;Crosslinking Agents;Orthosilicate;Silicate
Mol File:682-01-9.mol
Tetrapropoxysilane Structure
Tetrapropoxysilane Chemical Properties
Melting point <-80°C
Boiling point 94 °C5 mm Hg(lit.)
density 0.916 g/mL at 25 °C(lit.)
vapor density >1 (vs air)
vapor pressure 0.26Pa at 25℃
refractive index n20/D 1.4(lit.)
Fp 203 °F
storage temp. Inert atmosphere,Room Temperature
form liquid
Specific Gravity0.916
color Colorless to Almost colorless
Water Solubility 78mg/L at 20℃
Hydrolytic Sensitivity7: reacts slowly with moisture/water
Sensitive Moisture Sensitive
BRN 1706115
InChIKeyZQZCOBSUOFHDEE-UHFFFAOYSA-N
LogP3.4 at 20℃
CAS DataBase Reference682-01-9(CAS DataBase Reference)
NIST Chemistry ReferenceTetrapropyl silicate(682-01-9)
EPA Substance Registry SystemSilicic acid (H4SiO4), tetrapropyl ester (682-01-9)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36-37/39
RIDADR 1993
WGK Germany 3
F 10-21
TSCA Yes
HazardClass 8
PackingGroup III
HS Code 29209090
MSDS Information
ProviderLanguage
Tetrapropoxysilane English
SigmaAldrich English
ACROS English
ALFA English
Tetrapropoxysilane Usage And Synthesis
IntroductionTetrapropoxysilane (TPOS), [also called n-Propyl Silicate] is used as a cross-linking agent for silicon rubber, and as a modifying agent for organic and inorganic resins. The ethyl group of ethyl silicate is replaced by the N-propyl group, so the speed of hydrolysis is slower than ethyl silicate.
Applications
  • As an inorganic binder for refractory fillers and pigments, like precision investment castings.
  • As a second backup casting coating. It cures faster than colloidal silica system.
  • May be hydrolyzed to form silicon dioxide (silica).
  • As a binder in zinc-rich (corrosion resistant) coating.
  • As a starting material for sol-gel process.
  • As a crosslinking agent for silicone sealant.
  • As a drying agent in sealing compositions.
  • As a chemical intermediate.
Chemical PropertiesColorless transparent liquid
Flammability and ExplosibilityNonflammable
Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate 1,1,2,2-Tetrakis(4-bromophenyl)ethene Vinyltris(methylethylketoxime)silane PENTAERYTHRITOL TETRA(3-MERCAPTOPROPIONATE) tetraoctyl orthosilicate Tetrapropoxysilane SILICON TETRAACETATE Tetrabutyl orthosilicate SILICON TETRA-I-BUTOXIDE TETRACYCLOHEXYL ORTHOSILICATE TETRAKIS(2-ETHYLBUTOXY)SILANE TETRAKIS(2-ETHYLHEXOXY)SILANE SILICON TETRA-SEC-BUTOXID TETRADECYLOXYSILANE SILICON 2-ETHYLHEXANOATE BERYLLIUM SILICATE TETRAHEXYL ORTHOSILICATE TETRAOCTADECYLOXYSILANE
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