What is CF4 gas?
Carbon Tetrafluoromethane (CF4, R-14) is a low-temperature refrigerant and is also used in a variety of wafer etch processes. Tetrafluoromethane is used with oxygen to etch polysilicon, silicon dioxide, and silicon nitride. It is relatively inert under normal conditions and is an oxygen displacer.
Table of Contents
What is CF4 gas?
Carbon Tetrafluoromethane (CF4, R-14) is a low-temperature refrigerant and is also used in a variety of wafer etch processes. Tetrafluoromethane is used with oxygen to etch polysilicon, silicon dioxide, and silicon nitride. It is relatively inert under normal conditions and is an oxygen displacer.
What is the name of CF4?
CARBON TETRAFLUORIDE Tetrafluoromethane
Carbon tetrafluoride
| PubChem CID | 6393 |
|---|---|
| Chemical Safety | Laboratory Chemical Safety Summary (LCSS) Datasheet |
| Molecular Formula | CF4 |
| Synonyms | CARBON TETRAFLUORIDE Tetrafluoromethane Perfluoromethane 75-73-0 Methane, tetrafluoro- More… |
| Molecular Weight | 88.004 |
Why is CF4 a greenhouse gas?
Abstract. Tetrafluoromethane (CF4) is an extremely stable gas which strongly absorbs infrared radiation at ∼ 8 μm, and therefore is capable of influencing the greenhouse effect.
What kind of molecule is Tetrafluoromethane?
Methane;tetrafluoromethane
| PubChem CID | 21954844 |
|---|---|
| Molecular Weight | 104.05 |
| Parent Compound | CID 6393 (Carbon tetrafluoride) |
| Component Compounds | CID 297 (Methane) CID 6393 (Carbon tetrafluoride) |
| Dates | Modify 2022-04-02 Create 2007-12-05 |
Why is it called carbon tetrafluoride?
As its IUPAC name indicates, tetrafluoromethane is the perfluorinated counterpart to the hydrocarbon methane. It can also be classified as a haloalkane or halomethane. Tetrafluoromethane is a useful refrigerant but also a potent greenhouse gas….Carbon tetrafluoride.
| Names | |
|---|---|
| Related fluoromethanes | Fluoromethane Difluoromethane Fluoroform |
How is carbon tetrafluoride made?
Carbon tetrafluoride may be made by direct reaction between carbon and fluorine. Charcoals are not suitable as higher weight carbon fluoride form. The reaction can be carried out in a copper tube. Impurities in the gaseous product may be removed by fractional distillation.
Is HF a covalent bond?
Hydrogen fluoride. It is a covalently bonded gas at room temperature. The electronegativity difference between hydrogen and fluoride places the bond in a gray area which some sources will classify as ionic. The H-F bond (electronegativity difference 1.78) is considered polar covalent because hydrogen is nonmetallic.
Does Tetrafluoromethane dissolve in water?
Tetrafluoromethane is a useful refrigerant but also a potent greenhouse gas….Carbon tetrafluoride.
| Names | |
|---|---|
| Melting point | −183.6 °C (−298.5 °F; 89.5 K) |
| Boiling point | −127.8 °C (−198.0 °F; 145.3 K) |
| Solubility in water | 0.005%V at 20 °C 0.0038%V at 25 °C |
| Solubility | soluble in benzene, chloroform |
Does carbon tetrafluoride have polar bonds?
Carbon Tetrafluoride is a nonpolar covalent compound. If we look at the bonds individually, Carbon has an electronegativity of 2.5 and fluorine has an electronegativity of 4.0.
Is Tetrafluoromethane polar?
The molecules is perfectly symmetrical, so every electron pair on each fluorine cancels out the electron pairs of every other fluorine. For this reason, this molecule is non-polar.
Is carbon tetrafluoride an electrolyte?
Tf. Carbon tetrafluoride is a nonelectrolyte.
What does carbon tetrafluoride react with?
Tetrafluoromethane, like other fluorocarbons, is very stable due to the strength of its carbon–fluorine bonds. The bonds in tetrafluoromethane have a bonding energy of 515 kJ⋅mol−1. As a result, it is inert to acids and hydroxides. However, it reacts explosively with alkali metals.
What is tetrafluoromethane (CF4)?
Tetrafluoromethane, also known as carbon tetrafluoride or R-14, is the simplest fluorocarbon ( CF4 ). It has a very high bond strength due to the nature of the carbon–fluorine bond. It can also be classified as a haloalkane or halomethane. Tetrafluoromethane is a useful refrigerant but also a potent greenhouse gas.
Is tetrafluoromethane flammable?
Tetrafluoromethane is a colorless nonflammable gas. It is shipped as a liquid under pressure. It may be narcotic at high concentrations. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. It is used as a refrigerant. Tetrafluoromethane is a fluorocarbon and a member of fluoromethanes.
What is the charge of carbon in tetrafluoromethane?
Because of the multiple carbon–fluorine bonds, and the highest electronegativity of fluorine, the carbon in tetrafluoromethane has a significant positive partial charge which strengthens and shortens the four carbon–fluorine bonds by providing additional ionic character. Tetrafluoromethane is a potent greenhouse gas.
How do you make carbon tetrafluoromethane?
Tetrafluoromethane (carbon tetrafluoride, CF4) can be produced by reaction of CCl2F2 or CCl3F and hydrogen fluoride in the gas phase or by direct fluorination of carbon. Siegemund G et al; Fluorine Compounds, Organic.
