Sodium nitrate, NaNO

Ammonium nitrate NH4NO3, potassium nitrate KNO3, and sodium nitrate NaN03 

Solid ammonium, potassium and sodium nitrates are white powders. They are highly soluble in water. The solubihty of ammonium nitrate is 1180 g-l at 0 °C and that of ammonium nitrate 921 g-l while that of potassium nitrate is lower, only 133 g-l They are used in nitrogen fertilisers. Ammonium nitrate ranks among the top 20 chemical products in the world. 

Dry or in solution at any concentration, these nitrates have no action on aluminium. 

However, heating should be avoided since it results in evaporation of ammonia, leading to a decrease in the pH towards more acidic values. In order to use aluminium alloys under proper conditions, the pH of solutions of these nitrates should be maintained above 6 by adding ammonia [14]. 

The experience with storage tanks in aluminium alloys for concentrated solutions of ammonium nitrate at 830 g-l shows the very good resistance of alloys 1100, 3003,5052, 5454 and 6061 this also applies to welded zones [15]. 

Molecular weight 84.99, colourless trigonal crystals, specific gravity 2.257, melts at 308°C. It decomposes over 380°C generating oxygen to sodium 

Sodium nitrate powder is produced by crushing the crystals, it also cakes gradually but does not become as hard as potassium nitrate or chlorate. 

Sodium nitrate alone does not explode from a strong impact. It burns well in combination with shellac in the weight ratio 10 2, producing transparent liquid drops at the burning surface which consist of mainly sodium nitrite. It burns in combination with magnesium in the weight ratio 6 4, when it is perfectly decomposed producing neither drops nor cinder. 

The oxygen available in the former case amounts 0.188grams and in the latter 0.424grams per 1 gram of sodium nitrate. The reaction of the latter may be 

Sodium nitrate gives an intense yellow light, and latterly has been used for illumination. Especially in combination with magnesium it burns well without producing either cinder or sparks in wide range of the F/0 ratios i.e. the ratio can vary from 3 7 to 8 2. This is a superior characteristic, which is not available for any other composition. 

---

Sodium nitrate, NaNOs, is an example of an ionic substance that contains a group of atoms with a net charge. Sodium is present as Na atomic cations. The other atoms of sodium nitrate are grouped together in one structure, NO3, which carries a -1 charge (Figure S-lOl. This anion is a molecular ion, the nitrate ion. The... 

Soda niter or sodium nitrate (NaNO ) is the most abundant of the nitrate minerals. It is used for fertilizer, explosives, and preservatives. The natural deposits are located in northern Chile, which was the original source for many years. More recently, nitrogen fixation, which extracts nitrogen from air, has been used for producing sodium nitrate. This synthetic process has greatly increased the availability of this useful sodium salt by ehminating the need for the natural source. It is used to preserve and cure meats and is used in photography, in pharmaceuticals, and as a color fixative in fabrics. 

Evaporation of the solution will yield the salt sodium nitrate, NaNOs. 

Most sodium compounds tend to be quite hygroscopic, and therefore simple compounds such as sodium nitrate (NaNO 3), sodium chlorate (NaGlO 3), and sodium perchlorate (NaClO,) - combining the oxidizing anion with the metallic emitter - can not be used unless precautions are taken to protect against moisture... 

Other oxidizers, including barium chromate (BaCrO,), lead chromate (PbCrO 4), sodium nitrate (NaNO 3), lead dioxide (PbO 2), and barium peroxide (BaO 2) will also be encountered in subsequent chapters. Bear in mind that reactivity and ease of ignition are often related to the melting point of the oxidizer, and the volatility of the reaction products determines the amount of gas that will be formed from a given oxidizer /fuel combination. Table 3.2 contains the physical and chemical properties of the common oxidizers, and Table 5.8 lists the melting and boiling points of some of the common reaction products. 

Now that we have an idea of the composition of solutions of strong electrolytes, we can move on to consider what happens when we pour one solution into another. A solution of sodium chloride consists of hydrated Na+ cations and hydrated Cl- anions. Similarly, a solution of silver nitrate, AgN03, consists of hydrated Ag+ cations and hydrated NO, anions. When we mix these two aqueous solutions, we immediately get a white precipitate, a cloudy, finely divided solid deposit. Analysis shows that the precipitate is silver chloride, AgCl, an insoluble white solid (Fig. 1.6). The colorless solution remaining above the precipitate in our example contains hydrated Na+ cations and hydrated N03 anions. These ions remain in solution because sodium nitrate, NaNO is soluble in water. 

Sodium nitrate NaNO, saltpeter chemical supply house... 

Herricks, T., Chen, J. and Xia, Y. (2004). Polyol synthesis of platinum nanoparticles Control of morphology with sodium nitrate. Nano Lett. 4 2367-2371. 

Sodium nitrate (NaNOs). Gives a violent raction. 

In order to generalize the definition of the solvent system for the case of ionic media, we shall analyse Franklin s definition. First, it should be noted that the term auto-ionization in this definition should be substituted by auto-dissociation or intrinsic acid-base equilibrium of the solvent , as a more common case of heterolytic break down of the constituent particles of a liquid. Indeed, for molecular solvents or those which are slightly ionized at room temperature, the terms autoionization and intrinsic acid-base equilibrium of the solvent , relate to the same process, whereas for ionic liquids they differ considerably. For example, although sodium nitrate (NaNOs) is subject to practically... 

In Figure 18.26, several drops of bromthymol blue indicator solution have been added to 0.1 OM aqueous solutions of the salts ammonium chloride (NH4CI), sodium nitrate (NaNOs), and potassium fluoride (KF). Sodium nitrate turns the indicator green, which means that the solution is neutral. The blue color of the KF solution means that the solution is basic, and the yellow color of the ammonium chloride solution indicates that the solution is acidic. Why are some aqueous salt solutions neutral, some basic, and some acidic Many salts react with water in a process known as salt hydrolysis. In salt hydrolysis, the anions of the dissociated salt accept hydrogen ions from water or the cations of the dissociated salt donate hydrogen ions to water. 

Chemical composition in % by weight of the glass [38] 72.2% Si02, 14.3% Na20, 6.4% CaO, 4.3% MgO, 1.2% AI2O3,1.2% K2O, 0.3% SO3, 0.03% Fe203. Diffusion processes were carried out with a liquid source of admixture. The silver nitrate AgNOs and its sodium nitrate NaNOs solutions have been used. These solutions are determined by the molar fraction k [39] listed in Table 3. 

Aluminum and aluminum alloys Copper and copper alloys Beryllium Sodium chloride (NaCl), sodium nitrate (NaNOs)... 

At 10"C, which is more concentrated a saturated. solution of. sodium nitrate, NaNO or a saturated solution of stxlium chloride, NaCl (See Figure 7.20.)... 

---