GERMANIUM (II) SULFIDE Chemical Properties

Melting point:

615 °C (lit.)

Boiling point:

1503.99°C (estimate)

Density 

4.100

form 

crystal

color 

black

Water Solubility 

0.24g/100mL H2O [CRC10]

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

Crystal Structure

GeSe type

crystal system

Nogata

Space group

Pbnm

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.4299	1.0481	0.3646	90	90	90	0.1643

EPA Substance Registry System

Germanium sulfide (GeS) (12025-32-0)

Safety Information

Safety Statements 

22-24/25

WGK Germany 

3

MSDS

• Language:English Provider:SigmaAldrich

GERMANIUM (II) SULFIDE Usage And Synthesis

Application

Germanium sulfide is a substance that highly absorbs microwave radiation. Therefore, when sulfidation is carried out using microwave radiation, only the sulfides selectively absorb microwave radiation, generating instantaneous high temperatures. This causes germanium to react with sulfur to form germanium sulfide, which continues to absorb microwave radiation until it reaches the temperature for sublimation and volatilization. Microwave radiation has strong and uniform penetrability, resulting in high volatilization efficiency of germanium sulfide without generating excessively high local temperatures. The product obtained is mainly germanium sulfide, which is beneficial for subsequent processing. Compared to fuming furnaces, rotary kilns have superior indirect heating methods and heat conduction through a medium.

Chemical Properties

reddish-yellow, amorphous or rhomb crystal(s); -20 mesh with 99.95% purity [CER91] [CRC10]

General Description

Differential thermal analysis of germanium (II) sulfide was investigated. Melting point of GeS is 665^oC. GeS nanoparticles may be prepared by gas phase laser photolysis, to be used in lithium ion batteries. GeS films may be generated by electrochemical deposition and used as an electrolyte. A study also reports the formation of GeS clusters by laser ablation.

reaction suitability

reagent type: catalyst
core: germanium

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