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Engineering ToolBox > Pressure and Temperature Chart of Ammonia - NH3
Anhydrous ammonia NH3
Boiling pressures of liquid ammonia at different temperatures are indicated in the diagram and charts below:
| Temperature | Pressure | |
| oF | psia | psig |
| -60 | 5.6 | 18.6 |
| -58 | 5.9 | 17.8 |
| -57 | 6.1 | 17.4 |
| -56 | 6.3 | 17.0 |
| -55 | 6.5 | 16.6 |
| -54 | 6.8 | 16.2 |
| -53 | 7.0 | 15.7 |
| -52 | 7.2 | 15.3 |
| -51 | 7.4 | 14.8 |
| -50 | 7.7 | 14.3 |
| -49 | 7.9 | 13.8 |
| -48 | 8.2 | 13.3 |
| -47 | 8.4 | 12.8 |
| -46 | 8.7 | 12.2 |
| -45 | 9.0 | 11.7 |
| -44 | 9.2 | 11.1 |
| -43 | 9.5 | 10.6 |
| -42 | 9.8 | 10.0 |
| -41 | 10.1 | 9.3 |
| -40 | 10.4 | 8.7 |
| -39 | 10.7 | 8.1 |
| -38 | 11.0 | 7.4 |
| -37 | 11.4 | 6.8 |
| -36 | 11.7 | 6.1 |
| -35 | 12.1 | 5.4 |
| -34 | 12.4 | 4.7 |
| -33 | 12.8 | 3.9 |
| -32 | 13.1 | 3.2 |
| -31 | 13.5 | 2.4 |
| -30 | 13.9 | 1.6 |
| -29 | 14.3 | 0.8 |
| -28 | 14.7 | 0.0 |
| -27 | 15.1 | 0.4 |
| -26 | 15.6 | 0.8 |
| -25 | 16.0 | 1.3 |
| -24 | 16.4 | 1.7 |
| -23 | 16.9 | 2.2 |
| -22 | 17.3 | 2.6 |
| -21 | 17.8 | 3.1 |
| -20 | 18.3 | 3.6 |
| -19 | 18.8 | 4.1 |
| -18 | 19.3 | 4.6 |
| -17 | 19.8 | 5.1 |
| -16 | 20.3 | 5.6 |
| -15 | 20.9 | 6.2 |
| Temperature | Pressure | |
| oF | psia | psig |
| -14 | 21.4 | 6.7 |
| -13 | 22.0 | 7.3 |
| -12 | 22.6 | 7.9 |
| -11 | 23.2 | 8.4 |
| -10 | 23.7 | 9.0 |
| -9 | 24.4 | 9.6 |
| -8 | 25.0 | 10.3 |
| -7 | 25.6 | 10.9 |
| -6 | 26.3 | 11.6 |
| -5 | 26.9 | 12.2 |
| -4 | 27.6 | 12.9 |
| -3 | 28.3 | 13.6 |
| -2 | 29.0 | 14.3 |
| -1 | 29.7 | 15.0 |
| 0 | 30.4 | 15.7 |
| 1 | 31.2 | 16.5 |
| 2 | 31.9 | 17.2 |
| 3 | 32.7 | 18.0 |
| 4 | 33.5 | 18.8 |
| 5 | 34.3 | 19.6 |
| 6 | 35.1 | 20.4 |
| 7 | 35.9 | 21.2 |
| 8 | 36.8 | 22.1 |
| 9 | 37.6 | 22.9 |
| 10 | 38.5 | 23.8 |
| 11 | 39.4 | 24.7 |
| 12 | 40.3 | 25.6 |
| 13 | 41.2 | 26.5 |
| 14 | 42.2 | 27.5 |
| 15 | 43.1 | 28.4 |
| 16 | 44.1 | 29.4 |
| 17 | 45.1 | 30.4 |
| 18 | 46.1 | 31.4 |
| 19 | 47.2 | 32.5 |
| 20 | 48.2 | 33.5 |
| 21 | 49.3 | 34.6 |
| 22 | 50.4 | 35.7 |
| 23 | 51.5 | 36.8 |
| 24 | 52.6 | 37.9 |
| 25 | 53.7 | 39.0 |
| 26 | 54.9 | 40.2 |
| 27 | 56.1 | 41.4 |
| 28 | 57.3 | 42.6 |
| 29 | 58.5 | 43.8 |
| 30 | 59.7 | 45.0 |
| Temperature | Pressure | |
| oF | psia | psig |
| 76 | 143.0 | 128.3 |
| 77 | 145.4 | 130.7 |
| 78 | 147.9 | 133.2 |
| 79 | 150.5 | 135.8 |
| 80 | 153.0 | 138.3 |
| 81 | 155.6 | 140.9 |
| 82 | 158.3 | 143.6 |
| 83 | 161.0 | 146.3 |
| 84 | 163.7 | 149.0 |
| 85 | 166.4 | 151.7 |
| 86 | 169.2 | 154.5 |
| 87 | 172.0 | 157.3 |
| 88 | 174.8 | 160.1 |
| 89 | 177.7 | 163.0 |
| 90 | 180.6 | 165.9 |
| 91 | 183.6 | 168.9 |
| 92 | 186.6 | 171.9 |
| 93 | 189.6 | 174.9 |
| 94 | 192.7 | 178.0 |
| 95 | 195.8 | 181.1 |
| 96 | 198.9 | 184.2 |
| 97 | 202.1 | 187.4 |
| 98 | 205.3 | 190.6 |
| 99 | 208.6 | 193.9 |
| 100 | 211.9 | 197.2 |
| 101 | 215.2 | 200.5 |
| 102 | 218.6 | 203.9 |
| 103 | 222.0 | 207.3 |
| 104 | 225.4 | 210.7 |
| 105 | 228.9 | 214.2 |
| 106 | 232.5 | 217.8 |
| 107 | 236.0 | 221.3 |
| 108 | 239.7 | 225.0 |
| 109 | 243.3 | 228.6 |
| 110 | 247.0 | 232.3 |
| 111 | 250.8 | 236.1 |
| 112 | 254.5 | 239.8 |
| 113 | 258.4 | 243.7 |
| 114 | 262.2 | 247.5 |
| 115 | 266.2 | 251.5 |
| 116 | 270.1 | 255.4 |
| 117 | 274.1 | 259.4 |
| 118 | 278.2 | 263.5 |
| 119 | 282.3 | 267.6 |
| 120 | 286.4 | 271.7 |
Between -60oF to -28oF the PSIG pressure values are represented in inches Mercury (vacuum).