name: germanium fluoride

Synonyms: German tetrafluoride Germanic fluoride．

CAS number: 7783-58-6

purpose

Ion implantation and synthesis reagents.

Physical and chemical properties

Molecular weight: 148.60 Melting point: -15 ℃

Boiling point: When cooled under normal pressure, it immediately solidifies and sublimates above -36.5 ℃.

Density (solid at -195 ℃): 3148kg/m3

Relative density (gas, air=1): 5.12

Germanium tetrafluoride is a colorless gas with a garlic odor at room temperature and pressure. When cooled under normal pressure, it can solidify directly, and the solid has a tetrahedral structure. It emits smoke when encountering water vapor. Dissolved in water, hydrolyzed to form germanium oxide and hexafluorogermanic acid.

3GeF4+2H2O → GeO2+2H2GeF6

Reacting with anhydrous aluminum chloride, exchanging halogens to generate germanium tetrachloride.

Completely dry germanium tetrafluoride gas, does not corrode glass, but can corrode mercury and lubricating grease.

Toxicity and safety protection

Germanium tetrafluoride gas has a strong irritant effect on the eyes, skin, upper respiratory mucosa, and lungs, see hydrogen fluoride and germanane.