Water Boiling Temperature vs Pressure Vacuum Chart Table

Physics Engineering Data

Water Boiling Temperature vs Pressure in Vacuum Table Chart

The boiling point of water is the temperature at which the vapor pressure of the liquid water equals the pressure surrounding the water and the water changes into a vapor.

Water at high pressure has a higher boiling point than when that water is at atmospheric pressure. In other words, the boiling point of water varies depending upon the surrounding environmental pressure. For a given pressure, different liquids boil at different temperatures.

The normal boiling point (also called the atmospheric boiling point or the atmospheric pressure boiling point ) of a liquid is the special case in which the vapor pressure of the liquid equals the defined atmospheric pressure at sea level, 1 atmosphere . At that temperature, the vapor pressure of the liquid becomes sufficient to overcome atmospheric pressure and allow bubbles of vapor to form inside the bulk of the liquid.

Temperature
Microns
Inches of
HG Vacuum
Pressure
PSIA
212
100
759,968
0.00
14.696
205
96.11
535,000
4.92
12.279
194
90
525,526
9.23
10.162
176
80
355,092
15.94
6.866
158
70
233,680
20.72
4.519
140
60
149,352
24.04
2.888
122
50
92,456
26.28
1.788
104
40
55,118
27.75
1.066
86
30
31,750
28.67
0.614
80
26.67
25,400
28.92
0.491
76
24.44
22,860
29.02
0.442
72
22.22
20,320
29.12
0.393
69
20.56
17,780
29.22
0.344
64
17.78
15,240
29.32
0.295
59
15
12,700
29.42
0.246
53
11.67
10,160
29.52
0.196
45
7.22
7,620
29.62
0.147
32
0
4,572
29.74
0.088
21
-6.11
2,540
29.82
0.049
6
-14.44
1,270
29.87
0.0245
-24
-31.11
254
29.91
0.0049
-35
-37.22
127
29.9150
0.00245
-60
-51.11
25.40
29.9190
0.00049
-70
-56.67
12.70
29.9195
0.00024
-90
-67.78
2.54
29.9199
0.00005
--
0.00
29.9200
0.000000