Solubility of Different Gases in Water

The solubility of a gas in water depends on the partial pressure of the gas above the solution. This relationship is described by Henry’s Law, which states that at a constant temperature, the concentration of a gas dissolved in a liquid is directly proportional to the partial pressure of that gas in the vapor phase.

The following table provides a comprehensive list of the solubility of different gases in water at normal temperature and pressure (NTP) in (mg/L) unit.

Solubility of Gases in Water
Acetylene1200
Ammonia4.82 ×105
Argon62
Arsine280
Butadiene735
Butane61
Carbon dioxide3369
Carbon monoxide27.6
Carbonyl sulfide1250
Chlorine6300
Chloroethane5740
Chloromethane5325
Cyanogen8.182 ×105
Cyclopropane539
Dichlorodifluoromethane286
Dimethylamine1540
Dimethyl ether6.8 ×104
Ethane58
Ethylene131
Helium2.5
Hydrogen bromide1.93 ×106
Hydrogen chloride7.2 ×105
Hydrogen sulfide3980
Isobutane48.9
Isobutylene263
Methane23.2
Nitric oxide56
Nitrogen trifluoride210
Nitrous oxide1500
Propane77
Propylene318
Tetrafluoromethane20.4
Trichlorofluoromethane1100

The solubility of gases in water can vary with temperature and pressure.

References: 1) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 2) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 3) Yalkowsky, Samuel H, Yan He, Parijat Jain. Handbook of Aqueous Solubility Data. United Kingdom: CRC Press, 2016.