Solubility of Air in Water

Calculate the solubility of air dissolved in water based on temperature and pressure using Henry's Law. The amount of air that can be dissolved in water increases with pressure and decreases with temperature.

Calculator

Inputs

Temperature (°C)

Absolute Pressure (atm)

Water Volume (litre)

Results

Dissolved Air Mass-- g

Dissolved Air per Water Mass-- g/kg

Oxygen Dissolved (at 25°C)-- g

Nitrogen Dissolved (at 25°C)-- g

Temperature (°F)	0 psig	20 psig	40 psig	60 psig	80 psig	100 psig
40	0.0258	0.0613	0.0967	0.1321	0.1676	0.203
50	0.0223	0.0529	0.0836	0.1143	0.1449	0.1756
60	0.0197	0.0469	0.0742	0.1014	0.1296	0.1559
70	0.0177	0.0423	0.0669	0.0916	0.1162	0.1408
80	0.0161	0.0387	0.0614	0.084	0.1067	0.1293
90	0.0147	0.0358	0.0569	0.078	0.099	0.1201
100	0.0136	0.0334	0.0532	0.073	0.0928	0.1126
110	0.0126	0.0314	0.0501	0.0689	0.0877	0.1065
120	0.0117	0.0296	0.0475	0.0654	0.0833	0.1012
130	0.0107	0.028	0.0452	0.0624	0.0796	0.0968
140	0.0098	0.0265	0.0432	0.0598	0.0765	0.0931
150	0.0089	0.0251	0.0413	0.0574	0.0736	0.0898
160	0.0079	0.0237	0.0395	0.0553	0.0711	0.0869
170	0.0068	0.0223	0.0378	0.0534	0.0689	0.0844
180	0.0055	0.0208	0.0361	0.0514	0.0667	0.082
190	0.0041	0.0192	0.0344	0.0496	0.0647	0.0799
200	0.0024	0.0175	0.0326	0.0477	0.0628	0.0779
210	0.0004	0.0155	0.0306	0.0457	0.0607	0.0758