Aqua ammonia

Anhydrous and aqua ammonia are manufactured in various grades depending on use. Specifications are given in Tables 14 and 15, respectively. 

United States Pharmacopeia stronger ammonia water ammonia test solution normal (1 N) aqua ammonia chemically pure technical, Bh°... 

Prepared by reading the h and H values from the Jennings and Shannon Aqua-Ammonia Tables [35] at 260 psia and various wt % s of ammonia in the liquid. The tie lines connect the vapor compositions with the equilibrium liquid values. Figure 8-44. 

Jennings, B. H. and F. P. Shannon, Aqua-Ammonia Tables, Lehigh University, Part 1, Science and Technology Series No. 1, Bethlehem, Pa. 

To calculate the equilibrium curve at 90°F (constant temperature) for the system aqua ammonia-ammonia-inert vapors follow the steps listed ... 

At the values of vapor pressure at 90°F (32.2°C) read the corresponding weight percent aqua ammonia (= 8%). 

Read aqua-ammonia vapor pressure curves at wt percent NH3 and corrected temperature (base temperature plus rise) (= 90 + 17.8 = 107.8°F, e.g., or 41.1°C). Read 29.5 mm Hg as vapor pressure of ammonia, Figure 9-76. 

The two most common industrial absorption-type refrigeration systems are (1) aqua ammonia and (2) lithium bromide-water, with ammonia and water respectively the refrigerant for each system. 

Gas fired generator with aqua ammonia on shell side. 

Ammonia is a colorless gas with a suffocating, pungent odor. It is readily liquefied under pressure. The gas is very soluble in water to produce ammonium hydroxide, also known as ammonia water or aqua ammonia. 

Is aqua ammonia system protected from possible damage from moving vehicles ... 

Are piping and hose materials suitable for aqua ammonia service ... 

Are handlers/operators wearing their goggles and gloves when working with aqua ammonia ... 

Anhydrous ammonia is a colorless gas with a pungent odor, bp -33 °C. It can be liquefied at 25 °C under 175 psi. The gas is usually shipped as a liquid under pressure. It is very soluble in water. The water solution can be called ammonia water, aqua ammonia, ammonium hydroxide, or sometimes just ammonia misleadingly. 

D-Threose diacetamide. (Aqua ammonia.) Thirty grams of tetraacetyl-o-xylononitrile was mixed with 300 ml. of concentrated aqua ammonia (28-29 %) and warmed on a water bath until the solid was all dissolved, and then allowed to stand for three hours. The solution was concentrated in vacuo to a thick sirup, which was dissolved in aqua ammonia and reconcentrated. The final thick sirup was dissolved in absolute ethanol and ether added to the point of turbidity. After forty-eight hours in a refrigerator the crystals which had formed were collected yield, 16.5 g. (78%). They were recrystallized by dissolution in two volumes of warm 75 % ethanol, filtration through carbon and the addition of an equal volume of absolute ethanol. The compound crystallized slowly, forming clear, sharp needles or prisms in resets, m. p. 165-167. ... 

By employing aqua ammonia, the yield of D-lyxose diacetamide from the nitrile was improved to 72%. Degradation of the nitrile with sodium methoxide yielded 30% of D-lyxose, isolated as the p-bromo-phenylhydrazone. Treatment with silver carbonate subsequent to hydrolysis of the acetyl groups resulted in a 22% yield. 

Ammonium iodate, NH4IO3.—This salt is formed by H. Kammerer68 as a sparingly soluble white crystalline powder by the neutralisation of aq. iodic acid, or iodine trichloride with ammonia or ammonium carbonate from iodine water and ammonia from cold soln. of ammonium carbonate and barium iodate. A. Guyard, and F. D. Chattaway and K. J. P. Orton, also noticed that when nitrogen iodide is suspended in aqua ammonia and exposed to sunlight, ammonium iodide and iodate are formed. 

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