Sodium without

High Surface Sodium. Liquid sodium readily wets many soHd surfaces. This property may be used to provide a highly reactive form of sodium without contamination by hydrocarbons. Powdered soHds having a high surface area per unit volume, eg, completely dehydrated activated alumina powder, provide a suitable base for high surface sodium. Other powders, eg, sodium chloride, hydride, monoxide, or carbonate, can also be used. 

The alkah metals are commonly separated from all other elements except chlorine before gravimetric determination. In the absence of other alkaUes, sodium maybe weighed as the chloride or converted to the sulfate and weighed. WeU-known gravimetric procedures employ precipitation as the uranyl acetate of sodium—2inc or sodium—magnesium. Quantitative determination of sodium without separation is frequently possible by emission or atomic-absorption spectrometric techniques. 

The stirrer must be very efficient in-order to powder the sodium without splashing it onto the walls of the flask above the solvent. 

A 1-cm diameter glass tube narrowed to a tip at one end and equipped with a pipet bulb was used to transfer the dispersion which was carefully placed around the perimeter of the mound of [C5H5(CO)2Fe]2- After evaporation of the oil, the stirring bar should rest in the center of the ring of sodium without contacting it. In this way, the reaction mixture can subsequently be stirred more efficiently. Also, all of the sodium should lie below the surface of the tetrahydrofuran solution formed, so that the mixture reacts efficiently upon being heated at reflux. 

There is concern that sodium fire may be caused by sodium leaking out from the piping and vessels. As for a sodium leak, all pipes and vessels in the containment vessel are generally covered with guard pipes and vessels or filled with inert gas. However, sodium leaks from outside the containment vessel could cause sodium combustion and damage the reactor building. Fortunately, sodium outside the containment vessel is only secondary sodium without radioactive contamination. 

Sodium free Free of sodium, Zero sodium, Without sodium, Trivial source of sodium, Negligible source of sodium, Dietary insignificant source of sodium The food contains less than 5 mg of sodium per reference amount customarily consumed and per labeled serving... 

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