Germanium dioxide | SSHADE

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Solid phase

Official name: Germanium dioxide

Name and identifiers

Secondary names: Germanium(IV) oxide
CAS number: 1310-53-8

Family: covalent network solid
Class: tridimentional covalent network solid
Compound type: oxide

Chemical composition

Formula: $GeO_2$
Chemical formula: GeO2
Elemental formula: Ge O2
Isotope mixture type: terrestrial abundance

6.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Ge$	Germanium	element	1	0.3333333333333333	1	constituent element	main
	$O$	Oxygen	element	2	0.6666666666666666	1	constituent element	main

Class: tridimensional covalent networks (11)
Type: two non-metal (or one metalloid and one non-metal) atoms tridimensional networks (Ceramics) (11.03)

Crystallography

Phase type: crystalline
Crystal system: trigonal
Crystal class: trapezohedral
Crystal class symbol: 32 (D3)
Crystal spacegroup: P3(2)21

Physical properties

Molar mass: 104.6388 $g/mol$
Density: 4.228 $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid $GeO_2$	1115°C (1388 K)

Optical properties

Refringence type: uniaxial
Refringence sign: positive
Birefringence: 0.026
Refraction index $n_{\alpha}$: 1.651
Refraction index $n_{\beta}$: 1.677
Pure color: white
Color: white
Diaphaneity: translucent
Luster: silky

Links and Publications

Links