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Tanner Industries Inc Anhydrous Ammonia

Tanner Industries Anhydrous Ammonia is the compound formed by the combination of the two gaseous elements, nitrogen and hydrogen, in the proportion of one part of nitrogen to three parts of hydrogen by volume. Since one volume of nitrogen weighs fourteen times as much as one volume of hydrogen, on a weight basis, the ratio is fourteen parts of nitrogen to three parts of hydrogen, or about 82% nitrogen and 18% hydrogen.

Chemical Name: Ammonia

CAS Number: 7664-41-7

Synonyms: Azane, Hydrogen Nitride, NH3

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Knowde Enhanced TDS

Identification & Functionality

Chemical Name

Ammonia

CAS No.
7664-41-7
EC No.
231-635-3
Technologies

Base Chemicals & Intermediates

Product Families

Base Chemicals & Intermediates — Technical Salts & Inorganics

Inorganics

Features & Benefits

Product Highlights

At atmospheric temperature and pressures, anhydrous ammonia is a pungent colorless gas. Anhydrous ammonia boils at -28°F and freezes to a white crystalline mass at -108°F. When heated above its critical temperature of 270.3°F, ammonia exists only as a vapor regardless of the pressure. Between the melting and critical points, liquid ammonia exerts a vapor pressure, which increases with rising temperature. When liquid ammonia is in a closed container, it is in equilibrium with ammonia vapor and the pressure within the container bears a definite relationship to the temperature.

Liquid anhydrous ammonia is lighter than water, having a density of 42.57 pounds per cubic foot at -28°F, while as a vapor, ammonia is lighter than air, its relative density is 0.597 compared to air at atmospheric pressure and a temperature of 32°F. Under the latter conditions, one pound of ammonia vapor occupies a volume of 20.78 cubic feet. At 70°F and at atmospheric pressure, one pound of ammonia vapor occupies a volume of 22.5 cubic feet and yields 45 cubic feet of dissociated gas at a ratio of 25% nitrogen and 75% hydrogen.

Applications & Uses

Markets

Industrial

Applications

Industrial — Chemical & Industrial Manufacturing

Chemical Manufacturing

Properties

Molecular Formula
NH₃
Physical Properties
ValueUnitsTest Method / Conditions
Molecular Weight17.032
Boiling Point (1 Atmosphere)-28°F
Freezing Point (1 Atmosphere)-108°F
Critical Temperature270.34°F
Critical Pressure1647.2PSIA
Vapor Density (1 Atmosphere, -28°F)0.056697lb/Cubic ft
Heat of Combustion542btu/lb

Technical Details & Test Data

Liquid Density
Temp
(°F)		   Lbs./Cu.Ft. Lbs./U.S. Gal. Spec.Gr.Liq.
Comp.Water
(4°F)		 Latent Heat
BTU per Lb.
-28° 0 42.57 5.69 0.682 589.3
-20° 3.6 42.22 5.64 0.675 583.6
-10° 9 41.78 5.59 0.669 576.4
0° 15.7 41.34 5.53 0.663 568.9
10° 23.8 40.89 5.47 0.656 561.1
20° 33.5 40.43 5.41 0.648 553.1
30° 45 39.96 5.34 0.641 544.8
40° 58.6 39.49 5.28 0.633 536.2
50° 74.5 39 5.21 0.625 527.3
60° 92.9 38.5 5.14 0.617 518.1
65° 103.1 38.25 5.11 0.613 513.4
70° 114.1 38 5.08 0.609 508.6
75° 125.8 37.74 5.04 0.605 503.7
80° 138.3 37.48 5.01 0.6 498.7
85° 151.7 37.21 4.97 0.596 493.6
90° 165.9 36.95 4.94 0.592 488.5
95° 181.1 36.67 4.9 0.588 483.2
100° 197.2 36.4 4.87 0.583 477.8
105° 214.2 36.12 4.83 0.579 472.3
110° 232.3 35.84 4.79 0.573 466.7
115° 251.5 35.55 4.75 0.57 460.9
120° 271.7 35.26 4.71 0.565 455
125° 293.1 34.96 4.67 0.56 448.9
130° 315.6 34.66 4.63 0.555 443
135° 339.4 34.35 4.59 0.55 436
140° 364.4 34.04 4.55 0.545 430
Vapor Pressure Temperature Relationship

Tanner Industries Inc Anhydrous Ammonia - Vapor Pressure Temperature Relationship