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Tetrafluorosilane

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Identification
Molecular formula
SiF4
CAS number
7783-61-1
IUPAC name
tetrafluorosilane
State
State

At room temperature, tetrafluorosilane exists as a gas.

Melting point (Celsius)
-151.50
Melting point (Kelvin)
121.65
Boiling point (Celsius)
-95.00
Boiling point (Kelvin)
178.15
General information
Molecular weight
104.08g/mol
Molar mass
104.0790g/mol
Density
1.6600g/cm3
Appearence

Tetrafluorosilane is a colorless gas. Because it is composed of silicon and fluorine, it shares some properties with other silicon halides, particularly the tetrahalosilanes.

Comment on solubility

Solubility of Tetrafluorosilane (SiF4)

Tetrafluorosilane, with the chemical formula SiF4, exhibits unique solubility characteristics that set it apart from many other chemical compounds. It is largely regarded as a gas at room temperature, and its solubility behavior can be summarized as follows:

  • In Water: SiF4 is sparingly soluble in water, meaning that the extent to which it dissolves is minimal and doesn't facilitate significant interactions.
  • In Organic Solvents: It shows improved solubility in certain organic solvents, particularly those with polar characteristics, due to its molecular composition.
  • Reaction with Water: When tetrafluorosilane reacts with water, it produces hydrofluoric acid (HF) and silicic acid, indicating a complex nature rather than straightforward solubility.

Due to these properties, one might observe that "SiF4 is more soluble in aprotic solvents" which does influence its usage in various chemical processes and reactions.

In conclusion, while tetrafluorosilane has limited solubility in water, its interactions with organic solvents highlight the compound’s versatility in specialized applications.

Interesting facts

Interesting Facts About Tetrafluorosilane

Tetrafluorosilane, also known as silicon tetrafluoride, is an intriguing compound in the realm of chemistry, particularly due to its role in the semiconductor and materials science industries. Here are some noteworthy highlights:

  • Unique Properties: Tetrafluorosilane is known for its ability to react with water, forming hydrofluoric acid and silica. This characteristic makes it both useful and hazardous, which warrants careful handling in laboratory settings.
  • Use in Electronics: One of its primary applications is in the manufacture of microelectronics. Tetrafluorosilane is used in the deposition of silicon dioxide thin films, essential in the production of integrated circuits.
  • Fluorine Chemistry: As a compound containing fluorine, it showcases the fascinating chemistry of halogens. Fluorine is one of the most reactive elements, and its compounds like tetrafluorosilane give insights into the behavior of fluorinated materials.
  • Environmental Impact: The degradation of tetrafluorosilane in the atmosphere can produce potent greenhouse gases. Understanding its atmospheric chemistry is crucial for mitigating its environmental impact.
  • Safety Considerations: Due to its capability to form toxic byproducts, working with tetrafluorosilane necessitates rigorous safety protocols, emphasizing the importance of chemical safety education in laboratories.

In summary, tetrafluorosilane is not just a compound of industrial interest; its properties and applications provide essential insights into both technological advancements and environmental considerations in modern chemistry.

Synonyms
Tetrafluorosilane
SILICON TETRAFLUORIDE
Perfluorosilane
Silicon fluoride (SiF4)
SiF4
UN1859
HSDB 684
UNII-K60VCI56YO
EINECS 232-015-5
K60VCI56YO
Silicon tetrafluoride, compressed
UN-1859
232-015-5
Silane, tetrafluoro-
7783-61-1
Silicon fluoride
DTXSID0064830
ABTOQLMXBSRXSM-UHFFFAOYSA-
SILICON TETRAFLUORIDE [MI]
MFCD00040533
InChI=1/F4Si/c1-5(2,3)4
UN 1859
DB-256073
Q413140
Silicon tetrafluoride, electronic grade, >=99.99%
Silicon tetrafluoride, compressed [UN1859] [Poison gas]