Fluoromethane

• Monofluoromethane
• Methyl fluoride
• Freon 41 ( DuPont trade name )
• R 41

Highly flammable gas

Gaseous

-137.8 ° C

-78.4 ° C

3.3 MPa at 20 ° C.

227 g · l-1 water (20 ° C)

1.858 D (6.20 · 10-30 C · m)

Risk

97

Template: Infobox chemical / molecular formula search available

Fluoromethane is a gaseous at room temperature, highly flammable chemical compound selected from the group of the fluorocarbons.

Properties

Fluorine methane molecule is due to the high electronegativity of fluorine highly polar, which results in a considerable solubility of 227 g · l-1 of water (at 20 ° C) in water. Fluorine methane has a critical temperature of 44.55 ° C, the critical pressure is 58.742 bar, and the critical density 0.30 kg / l The triple point temperature is -137.8 ° C, which corresponds to the melting temperature. Its specific heat capacity at 25 ° C is Cp = 38.171 Jmol -1K -1. The compound has a GWP of 97

Use

Fluoromethane is used in the production of semiconductors as an etching gas and the plasma etching. It was also used as a refrigerant.

Safety

Fluorine methane forms an explosive mixture with air. The lack of a smell pollution in the air is not noticeable. Toxic effects on organisms is not known. During the combustion of highly toxic hydrogen fluoride may arise. As with other fluoro and chlorofluorocarbons hydrochlorofluorocarbons a narcotic effect is suspected.