BISMUTH GERMANIUM OXIDE

CAS NO.：12233-56-6
Empirical Formula: Bi4Ge3O12
Molecular Weight: 1245.83
MDL number: MFCD00064629
EINECS: 235-457-7
SAFETY DATA SHEET (SDS)
Update Date: 2023-04-23 13:52:06

What is BISMUTH GERMANIUM OXIDE?

Description

Bismuth germanate is a cubic crystal with the formula, Bi4Ge3O12. It has the “evlitine” structure. A less common composition is Bi12GeO20 .
The unit cell consists of three GeO3 tetraheda arranged in a building block. These units are arranged in a cubic close-packed structure as shown in the above diagram. The crystal structure of tetrabismuth tris(germanate), Bi4Ge3O12 (I3d, Z =4), is stable to at least 7.30 GPa, as demonstrated by hydrostatic single-crystal XRD measurements in a diamond anvil cell at room temperature.

Chemical properties

white chips or powder(s), 99.99995% purity [ALF93]

The Uses of BISMUTH GERMANIUM OXIDE

Bismuth germanium oxide is used as an organic chemical synthesis intermediate.

The Uses of BISMUTH GERMANIUM OXIDE

Scintillator crystal in nuclear physics, high-energy physics, geology, and nuclear medical imaging applications including PET, X-ray CT and positron CT; in electromagnetic calorimeters.

The Uses of BISMUTH GERMANIUM OXIDE

Bismuth germanate is used in detectors in particle physics, aerospace physics, nuclear medicine, geology exploration, and other industries. Bismuth germanate arrays are used for gamma pulse spectroscopy. BGO crystals are also used in detectors for positron emission tomography. Bismuth germanate has a high “electrooptic coefficient” (3.3 pm/V for Bi12GeO20) making it useful in nonlinear optics for building “Pockel cells”. It can also be used for photorefractive elements useful in the ultraviolet part of the electromagnetic spectrum.

Properties of BISMUTH GERMANIUM OXIDE

Melting point:	~1050°
Density	7.13
refractive index	n550 2.1204; n600 2.1058; n750 2.0786
form	Powder
color	White
Specific Gravity	7.13
Water Solubility	Insoluble in water.
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
EPA Substance Registry System	Bismuth germanium oxide (Bi4Ge3O12) (12233-56-6)

Safety information for BISMUTH GERMANIUM OXIDE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.