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Product Code: GET7100

Cas No: 14165-55-0

R&D quantities:


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Boiling Point: 185-6°

EINECS Number: 238-007-8

Melting Point: -72°

Molecular Weight: 252.84


Specific Gravity: 1.134

Flashpoint: 62°C (144°F)

HMIS Key: 2-2-1-X

Hydrolytic Sensitivity: 7: reacts slowly with moisture/water

Formula: C8H20GeO4

Refractive Index: 1.4049


Application: Sol-gel intermediate for optical fiber preforms,1 and monoliths.2,3
Forms GeO2 by PCVD.4
Incorporation into SiO2 interlayer dielectric / passivation reduces reflow temp.5
Sol-gel derived SiO2-GeO2 glasses are photosensitive / high-pressure H2 loading.6,7
Reacts with H2S, sulfur, water to form semiconductor germanium disulfide.8

Reference: 1. Matsuo, N. et al. Chem. Abstr. 105, 10766e; German Patent 3,535,367, 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. et al. Bull. Am. Ceram. Soc. 1966, 45, 784.
5. Fisher, S. et al. Solid State Tech., p55, September, 1993.
6. Czekaj, C. et al. Amer. Chem. Soc. Meeting, August 1994.
7. Green, B. et al. J. Non-Cryst. Solids 1994, 168, 195.
8. Etsell, T. et al. J. Mater. Chem. 1997, 7, 105.

Additional Properties: Dipole moment: 1.7 debye
Surface tension, 25°: 23.2 dynes/cm
?Hcomb: -1,323.3 kcal/mole
?Hvap: 10.3 kcal/mole
>99.99% (metals basis)
Vapor pressure, 86°: 12 mm