Germanium dioxide

Germanium dioxide

Tetragonal rutile form
Names
IUPAC name Germanium dioxide
Other names Germanium(IV) oxide Germania ACC10380 G-15 Neutral germanium oxide (1:2) Germanic oxide Salt of germanium
Identifiers
CAS Number	1310-53-8 Y
3D model (JSmol)	Interactive image
ChemSpider	14112 Y
ECHA InfoCard	100.013.801
PubChem CID	14796
RTECS number	LY5240000
UNII	5O6CM4W76A Y
CompTox Dashboard (EPA)	DTXSID0051653
InChI InChI=1S/GeO2/c2-1-3 Y Key: YBMRDBCBODYGJE-UHFFFAOYSA-N Y InChI=1/GeO2/c2-1-3 Key: YBMRDBCBODYGJE-UHFFFAOYAG
SMILES O=[Ge]=O
Properties
Chemical formula	GeO2
Molar mass	104.6388 g/mol
Appearance	White powder or colourless crystals
Density	4.228 g/cm3
Melting point	1,115 °C (2,039 °F; 1,388 K)
Solubility in water	4.47 g/L (25 °C) 10.7 g/L (100 °C)
Solubility	Soluble in HF, insoluble in other acid. Soluble in strong alkaline conditions.
Magnetic susceptibility (χ)	−34.3·10−6 cm3/mol
Refractive index (nD)	1.650
Structure
Crystal structure	Hexagonal
Hazards
NFPA 704 (fire diamond)	1 0 0
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)	3700 mg/kg (rat, oral)
Related compounds
Other anions	Germanium disulfide Germanium diselenide
Other cations	Carbon dioxide Silicon dioxide Tin dioxide Lead dioxide
Related compounds	Germanium monoxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Germanium dioxide, also called germanium(IV) oxide, germania, and salt of germanium,^[1] is an inorganic compound with the chemical formula GeO₂. It is the main commercial source of germanium. It also forms as a passivation layer on pure germanium in contact with atmospheric oxygen.