Fluorides oxygen

The preparation of this substance consists in passing gaseous fluorine through a 2 per cent solution of sodium hydroxide.1,2,3 The product obtained is a mixture consisting of approximately 50 per cent OF2 and 50 per cent 02, together with small amounts of fluorides of carbon (from the fluorine generator). 

The sodium hydroxide solution from a large bottle, and at room temperature, is caused to flow at the rate of 1 1. per hour through a pyrex glass tube equipped with an overflow for the solution and another tube for the gas outlet, and an inlet tube of copper or platinum for the fluorine as shown in Fig. 18. The inlet tube, which is sealed into the glass with red sealing wax, dips from 0.5 to 2 cm. into the alkali solution. The fluorine is passed directly from the generator into the inlet tube at the rate of from 1 to 3 1. per hour. If the fluorine is first condensed with liquid air, the yield is said to be very small.2 To the exit tube are attached first a gas wash bottle filled with water, (see Fig. 19) then a trap cooled with a solid carbon dioxide-alcohol mixture, and finally another trap cooled with liquid air. The OF2 is freed from any fluorine in the wash bottle, and the water vapor is frozen out in the first trap. The OF2—02 mixture condenses to a pale-yellow liquid in the 

Further purification can be accomplished by pumping on the trap containing the liquid while it is still immersed 

Rubber tube provided with pinch damp J to regulate r level of i  

The gas does not attack dry glass or quartz at ordinary temperatures, and it does not decompose except at elevated temperatures. Mercury is attacked at room temperatures, and when used in manometers it soon becomes so fouled that the level cannot be seen. Stopcock grease is slowly attacked. 

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Other oxygen fluorides, O2F2, O4F2, O5F2 and 06p2, are prepared by passing an electric spark through a mixture of O2, F2 and sometimes O3. 

The oxides of fluorine are more correctly called oxygen fluorides because of the greater electronegativity of fluorine. 

Oxygen. Oxygen does not react directly with fluorine under ordinary conditions, although ia addition to oxygen difluoride, three other oxygen fluorides are known (29). Dioxygen difluoride [7783-44-0] 2 2 difluoride [16829-28-0] 3 2 tetraoxygen difluoride [12020-93-8] 4 2 ... 

Oxygen fluoride is a colourless, very poisonous gas that condenses to a pale-yellow liquid (mp... 

See Other ENDOTHERMIC COMPOUNDS, HALOGEN OXIDES, OXIDANTS, OXYGEN FLUORIDES... 

Oxygen fluorides, 11 830 Oxygen-free copper wrought alloy, mechanical properties, 7 678t... 

Synonyms Fluorine monoxide oxygen fluoride fluorine oxide... 

Noble Gas Fluorides. Since the discovery of XeF4 in September 1962, several fluorides and oxygen fluorides of the three heaviest noble gases have been reported. As previously mentioned, the existence of such compounds intrigued propellant chemists with the possibility of gaining a new family of propellants. 

Few oxygen fluorides are known. The most stable of these is oxygen difluonde. It is usually prepared by the passage of fluorine through aqueous alkali ... 

Trioxygen Difluoride. (Fluorine Ozonide). See in Vol 6, F135-L and the following AddnlRefs 1) A.G. Streng, The Oxygen Fluorides , ChemRev 63 (6), 607-24 (I960) CA 60, 1318(1964) [The author reports in this sum-... 

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