Salt ammonia

Sodium bicarbonate may be prepared by the ammonia-salt (Solvay) process. Carbon dioxide is passed through a solution of sodium chloride in ammonia water. Sodium bicarbonate is precipitated and the ammonium chloride remains in solution. The ammonium chloride is heated with lime to regenerate ammonia (see Alkali AND CHLORINE PRODUCTS). 

For direct precipitation of vanadium from the salt-roast leach Hquor, acidulation to ca pH 1 without the addition of ammonia salts yields an impure vanadic acid when ammonium salts are added, ammonium polyvanadate precipitates. The impure vanadic acid ordinarily is redissolved in sodium carbonate solution, and ammonium metavanadate precipitates upon addition of ammonium salts. Fusion of the directly precipitated ammonium salts can yield high purity V20 for the chemical industry. Amine solvent extraction is sometimes used to recover 1—3 g/L of residual V20 from the directly precipitated tail Hquors. 

Anilinonaphthalenesulfonic acid ammonia salt (ANS reagent) fatty acids [112,113] lecithin/sphingomyelin [114, 115] cholesterol and its esters [116, 117] steroids, detergents, hydrocarbons [118,119] prenol, prenylquinones [120]... 

Contains Nitrogen.—First test the original solid ni liquid by heating in a hard-glass tube with soda-lime (p. 2), and notice if the smell is that of ammonia (ammonia salt, amide or cyanide), an amine (amine or amino-acid) or a pyridine base (alkaloid). 

Ammonia is a pungent, toxic gas that condenses to a colorless liquid at — 33°C. The liquid resembles water in its physical properties, including its ability to act as a solvent for a wide range of substances. Because the dipole moment of the NH3 molecule (1.47 D) is lower than that of the H20 molecule (1.85 D), salts with strong ionic character, such as KCI, cannot dissolve in ammonia. Salts with polarizable anions tend to be more soluble in ammonia than are salts with greater ionic character. For example, iodides are more soluble than chlorides in ammonia. Liquid ammonia undergoes much less autoprotolysis than water ... 

Particularly in autoanalyser methods this wide variation in chloride content of the sample can lead to serious salt errors and, indeed, in the extreme case, can lead to negative peaks in samples that are known to contain ammonia. Salt errors originate because of the changes of pH, ionic strength and optical properties with salinity. This phenomenon is not limited to ammonia determination by autoanalyser methods it has, as will be discussed later, also been observed in the automated determination of phosphate in estuarine samples by molybdenum blue methods. 

The coefficients for the other gases in ammonia salts at 25°C (Table VII), show patterns similar to that of ammonia, but there are insufficient data to obtain independent correlations. Instead, we have averaged the differences between each gas and ammonia in ammonium salts, as shown in Table VII, to obtain for any given salt solution ... 

Epperly Sprague 1991 Martin et al. 1993 Gasiorowski et al. 2000). A different chemical approach is to oxidize ammonia by the addition of hypochlorite to the fly ash prior to use as a cement additive (Minkara 2003). Wet beneficiation of fly ash with flotation, although not a specific chemical treatment, will also remove ammonia due to the high solubility of the ammonia salt compounds present. 

Maiche cell — This - battery was developed by Lois Maiche and it was a zinc-air battery. The oxygen electrode was from platinized carbon, and the electrolyte solution contained either an ammonia salt or sodium hydrogen-sulfate and sulfuric acid. See also - zinc, - Zn2+/Zn electrodes, -+ Zn2+/Zn(Hg) electrodes, -> zinc-air batteries (cell), and - Leclanche cell. 

There is some evidence to suggest that the priests at the Temple of Amun in ancient Egypt produced it by sublimating soot. The product contained volatile ammonia salts and was called Hie Salt of Amun, then later Sal Ammoniac. 

In qualitative analysis copper is detected by precipitation as cupric sulphide from hydrochloric-acid solutions of its salts. To prevent the formation of a colloidal precipitate, the solution should be hot, and should contain excess of the acid. The sulphide is soluble in hot, dilute nitric acid, and in potassium-cyanide solution, but almost insoluble in solutions of alkali-metal sulphides. It dissolves to some extent in ammonium-sulphide solution. Other aids in the detection of copper are the blue colour of solutions of cupric-ammonia salts the reddish-brown precipitate of cupric ferrocyanide, produced by addition of potassium ferro-cyanide to cupric solutions the formation of an intense purple coloration by the interaction of hydrogen bromide and cupric salts, a very delicate reaction2 the formation of a bluish-green borax bead and the ready isolation of the metal from its compounds by the action of reducers. 

The name ammonia for the nitrogen - hydrogen compound NH3 is derived from the oasis Ammon (today Siwa) in Egypt, where Ammonia salts were already known in ancient times and also the Arabs were aware of ammonium carbonate. For a long time only the sal ammoniacum was available. Free ammonia was prepared much later (Priestley, 1774). 

BNL275 CAS 23483-74 1 HR 3 BROMO(2-HYDROXYETHYL)MERCURY AMMONIA SALT... 

At the temperature of 15, if the coordinate is taken as concentration in ammonia salt, and s, the concentration in ferric... 

Commercial archil is prepared by moistening the weeds with ammonia and exposing the mixture to the air. Formerly putrid urine was used in place of the ammonia. The product obtained may be worked up into extract, Archil liquor or dried and powdered, or is sold in the crude form as Archil paste. These products all contain orcein in form of its ammonia salt. 

Although Pmssian Blue, synthesized in 1704, was the first officially recognized metal coordination complex to be made, discovery of this group of transition metal complex ions is often credited to Taessert, who in 1798 prepared the first known cobalt ammonia salts. His work inspired a revolution in inorganic chemistry. At the turn of the nineteenth century, amidst the flourishing developments of organic chemistry, the striking colors... 

Low emitting materials meeting 0.1 ppm air levels currently account for about 20% of the European production. These low emitting products can be made by different methods Using low F U molar ratio resins, addition of urea to resin or wood furnish before resination, and post-treatment of hot board with ammonia or ammonia salts. Due to improved quality control, current products are now capable of meeting predictable emission performance criteria and, in most applications, they can be used in a traditional load ratio without air I eve Is exceed i ng 0.1 ppm under norma I use cond i t i ons. 

Water, solutions of ammonia, salts of manganese, oil and so on are used in modern industry as absorbents for gas cleaning. 

Coim HO. 1972. Studies of the source and significance of blood ammonia IV. Early ammonia peaks after ingestion of ammonia salts. Yale J Biol Med 45 543-549. 

Warren KS. 1958. The differential toxicity of ammonia salts. J Clin Invest 37 497-501. 

In 1887, Pade described a piece of apparatus that enabled researchers to determine precisely the absolute densities of coffees and to detect coffee frauds involving manipulation of green coffees and watering of roast coffees. In this connection he mentions and comments on a fraudulent method whereby products released during roasting are condensed and reinserted into the coffee beans. After a summary analysis he deduces that this concentrated liquid contains caffeine, ammonia, amines, ammonia salts, acrid bases near pyridinic compounds and fatty acids. By watering down the still-hot coffee with this mixture, 14 to 15% of the lost weight can be fraudulently restored to it. 

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