Chlorides volatility

After firing, the powder is washed in water typically with a small amount of complexing agent such as ethylenediarninetetraacetic acid (EDTA), sodium EDTA, or a weak acid such as citric acid to remove the excess chloride, volatile antimony oxychlorides which have recondensed on the phosphor during cooling, and manganese compounds which are not incorporated in the halophosphate lattice. The powder is then ready for suspension. 

No chlorides, volatile ingredients, heavy metals, phenols... 

Oersted s product must have been impure, metallic aluminum containing mercury, but when Wohler repeated the experiment he found that the gray molten mass formed by die action of the potassium amalgam on the aluminum chloride volatilized completely when heated (12, 46). Kirstine Meyer s careful study of Oersted s unpublished notes and I. Fogh s and M. Tosterud and J. D. Edwards repetitions of his experiment show that the great Danish physicist allowed a dilute amalgam containing about 1.5 per cent of potassium to react with excess aluminum chloride, and that it is possible to prepare the metal in this manner (42, 44, 45, 53). 

Chloride volatilization Thermal recovery Roasting of chloride results in volatilization... 

All metallic chlorides, except silver chloride and mercurous chloride, are soluble in H.O. but lead chloride, cuprous chloride and thallium chloride are only slightly soluble. Metallic chlorides when heated melt, and volaiilize or decompose, e.g.. sodium chloride, mp 804 (2 calcium, strontium, barium chloride volatilize at red heal magnesium chloride crystals yield magnesium oxide residue and hydrogen chloride cupric chloride yields cuprous chloride and chlorine. Sec also Chlorine Chlorinated Organics. Halides Hypochlorites and Sodium Chloride. 

Fauveau and Le Paire 23 studied the anti-flash effect of potassium chloride and of other salts and concluded that the lowering of the temperature of the gas which undoubtedly results from their volatilization and dissociation is insufficient to account for the extinction of the flash. Prettre24 found that the chlorides of sodium and of lithium, and other alkali metal salts which are volatile, had the same effect as potassium chloride. He found that small amounts of potassium chloride, volatilized in mixtures of carbon monoxide and air, had a powerful anti-oxidant action and a correspondingly large effect in raising the temperature of inflammation of the gas. Some of his results are shown in the table below. He found that potassium chloride was without effect... 

Lithium chloride has been volatilized completely in a stream of hydrogen chloride at a white heat. These salts also volatilize in the hottest part of a Bunsen flame, and under these conditions R. Bunsen found potassium chloride volatilized 0 776 times as fast as the same amount of sodium chloride. T. H. Norton and D. M. Roth say 0 923 times as fast. The relative density of the vapour of sodium chloride has been determined. Potassium chloride loses weight six times more quickly when heated to bright redness in a stream of moist air than it does in dry air.i There is a slight loss by volatilization of salt entrdine avec la vafeur d eau, during the evaporation of aq. soln. of the alkali chlorides G. H. Bailey found that... 

Aerosol particles in the atmosphere contain a variety of volatile compounds (ammonium, nitrate, chloride, volatile organic compounds) that can exist either in the particulate or in the gas phase. We estimate in this section the timescales for achieving thermodynamic equilibrium between these two phases and apply them to typical atmospheric conditions. The problem is rather different compared to the equilibration between the gas and aqueous phases in a cloud discussed in the previous section. Aerosol particles are solid or concentrated aqueous solutions (cloud droplets are dilute aqueous solutions), they are relatively small, and aqueous-phase reactions in the aerosol phase can be neglected to a first approximation because of the small liquid water content. 

Halogenated Hydrocarbons Dehalogenation of chloroform, methylene chloride Volatile Anesthetics (fluorinated hydrocarbons)... 

Values of Henry s Law constants for selected chlorinated solvents are given in Table 23.1.2. As indicated in the table, values of H for chlorinated eompounds also vary over several orders of magnitude. Chlorinated solvents have low Henry s Law eonstants, with the exception of vinyl chloride. Volatilization of chlorinated solvents compounds from ground water is a relatively slow process that generally can be negleeted when modeling biodegradation. 

Sodium chloride volatilizes at red heat but it can be used to prevent dusting, exclude air, and wash down the sides of the crucible. 

Volatile alkali Sal ammmoniac (Ammonium chloride) Volatile alkali Nitrium flamraans (Ammcnium nitrate) Volatile alkali Sal ammoniacum secretura Glauberi (AnuiKmium sulfate)... 

Chloride volatility techniques. The spent fuel is reacted at high temperatures with chlorine gas and all of the materials converted to a volatile gas. The uranium, actinides and fission products are separated from each other by cooling and distillation. 

Electrometallurgical treatment and the chloride volatility techniques do not produce a disposable waste form they are rather prior steps to either conditioning or reprocessing. 

If an alcohol having three or fewer carbons is expected, a 1-mL conical vial equipped with an air condenser should be used to prevent low molecular weight alkyl chlorides (volatile) from escaping and thus remaining undetected. 

It has been found that sodium amide may be replaced by the readily available mercuriamide chloride volatile hydrogen cyanide results. The net reaction may, perhaps, be written ... 

Lead can be identified easily in the ordinary qualitative scheme, where its chloride may be present along with the chlorides of silver, univalent mercury, and thallium. The mixed chlorides are transferred to a crucible, dried and then carefully heated to redness. Thallous and mercurous chloride volatilize. The cold residue is digested with 4 drops of strong ammonia water to dissolve any silver chloride. The contents of the crucible are then evaporated to dryness. Three drops of the buffer solution and one drop of sodium rhodizonate are added. If the original precipitate contained lead, a red precipitate or coloration will appear. It is necessary to dissolve the silver chloride because it melts and encloses lead chloride, which may thus be shielded from the action of the sodium rhodizonate. 

KCI/LiCI eutectic + NaPOg/IngOjOr InFg Chlorides volatile... 

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