Potassium chloride, molecular weight

KCl POTASSIUM CHLORIDE Molecular weight 74.551 System cubic a -= 0.6293 Density 1989 Z = 4 ... 

Treat 1 g. (1 ml.) of the amine with 4 mols of 10 per cent, sodium or potassium hydroxide solution (say, 20 ml,), and add 1 -5 mols (or 3 g. if the molecular weight is unknown) of benzenesulphonyl or p-toluenesulphonyl chloride in small portions with constant shaking. To remove the excess of acid chloride, either shake vigorously or warm gently. Acidify with dilute hydrochloric acid and filter off the sulphonamide. Recrystallise it from alcohol or dilute alcohol. 

Calcium chloride is the most common nonregenerative reagent used to dry low molecular weight refinery streams to moderately low dew points. Anhydrous potassium or sodium hydroxide have also been used at times to dry liquefied petroleum gas. Sodium chloride is used most commonly to remove entrained and some soluble water from middle distillate streams. 

Polyethylene glycol (molecular weight, 300-6(W) can aid in the displacement of activated halogen by fluorine. Propionyl chloride is converted to propionyl fluoride with potassium fluoride and polyethylene glycol in acetonitrile [63] Treatment of benzyl chloride with a mixture of potassium fluoride and potassium iodide for 5 h in acetonitrile containing polyethylene glycol 200 gives benzyl fluoride in 62% yield [64],... 

The mass attenuation coefficient values of the elements are available in the literature [46]. Therefore, the mass attenuation coefficient of a compound can be calculated. Thus and (in Eq. 15) can be calculated provided the molecular formulas of components 1 and 2 are known. It is then possible to calculate the intensity ratio, /u/(/ii)o> as a function of xx. This ratio can also be experimentally obtained. The intensity of peak i of a sample consisting of only 1 is determined [(/ii )o] This is followed by the determination of the intensity of the same peak in mixtures containing different weight fractions of 1 and 2. This enables the experimental intensity ratio, /n/(/n)o, to be obtained as a function of xx. The principles discussed above formed the basis for the successful analyses of quartz-beryllium oxide and quartz-potassium chloride binary mixtures [45]. 

Oxadiazoles of low molecular weight are volatile liquids. The aliphatic derivatives possess a strong ethereal odor, while the aromatic ones remind of aromatic esters. Oxadiazole itself is a liquid boiling at 87°, soluble in water and aU organic solvents. It cannot be recovered from its solutions by distillation because it distils with the vapor of the solvent, even in ethereal solution. It can, however, be isolated as an oil from its aqueous solution by salting out with potassium carbonate, calcium chloride, or ammonium sulfate 55 c). 

Molecular weights.—The composition of the alkali chlorides has been established by analyses. These salts contain alkali, R, and chlorine, Cl, in the proportion 1 1. Consequently, the mol. formulse are represented by RnCln. The difficult volatility of sodium chloride—contrasted with say mercuric chloride—suggests a complex molecule. W. Nernst 78 found the vapour density of both sodium and potassium chlorides, at 2000°, corresponded with the respective formula NaCl and KC1 for the vapours of these salts. L. Riigheimer found that the effect of sodium chloride on the b.p. of bismuth trichloride corresponded with the simple formula NaCl and E. Beckmann obtained a similar result from the effect of sodium, potassium, rubidium, and csesium chlorides on the f.p. of mercuric chloride. 

Figure 7 shows the reversible phase separation by alternative addition of potassium chloride and low molecular weight [18]crown-6 at 37 °C. The addition of K+ caused the increase of transmittance at 500 nm, while... 

As an example, the chlorine atom of potassium chloride (KCl) also is found in hydrochloric acid (HC1) in combination with one hydrogen atom, Thus, the gram-equivalent weight of KCl is 74.555, which is the same as its gram-molecular weight. A one normal solution of KCl will contain 74.555 grams of the salt per liter of solution. 

Reagents used to formulate the membranes are valinomycin, nonactin, dibenzo(18-crown-6), bis(2-ethylhexyl) sebacate, bis(l-butylpentyl) adipate, poly(vinyl chloride) (PVC) (high molecular weight), potassium tetrakis(4-chlorophenyl)borate, all from Fluka. The different components are dissolved in tetrahydrofuran (Fluka) to form a membrane cocktail. 

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