BoilingPoint:185-6°

EINECSNumber:238-007-8

MeltingPoint:-72°

MolecularWeight:252.84

AlternativeName:GERMANIUMETHOXIDE

SpecificGravity:1.134

Flashpoint:62°C(144°F)

HMISKey:2-2-1-X

Formula:C₈H₂₀GeO₄

RefractiveIndex:1.4049

TSCA:TSCA

Application:Sol-gelintermediateforopticalfiberpreforms,¹andmonoliths.^2,3
FormsGeO₂byPCVD.⁴
IncorporationintoSiO₂interlayerdielectric/passivationreducesreflowtemp.⁵
Sol-gelderivedSiO₂-GeO₂glassesarephotosensitive/high-pressureH₂loADIng.^6,7
ReactswithH₂S,sulfur,watertoformsemiconductorgermaniumdisulfide.⁸

Reference:1.Matsuo,N.etal.Chem.Abstr.105,10766e;GermanPatent3,535,367,1986.
2.Mukherjee,S.Mater.Res.Soc.Symp.Proc.1984,32,111.
3.Mukherjee,S.Mater.Res.Soc.Symp.Proc.1986,73,443.
4.Secrist,D.etal.Bull.Am.Ceram.Soc.1966,45,784.
5.Fisher,S.etal.SolidStateTech.,p55,September,1993.
6.Czekaj,C.etal.Amer.Chem.Soc.Meeting,August1994.
7.Green,B.etal.J.Non-Cryst.Solids1994,168,195.
8.Etsell,T.etal.J.Mater.Chem.1997,7,105.

AdditionalProperties:Dipolemoment:1.7debye
Surfacetension,25?:23.2dynes/cm?Hcomb:-1
?Hvap:10.3kcal/mole>99.99%(metalsbasis)
Vaporpressure