Hydrogen is soluble in water. Under standard conditions, the solubility of hydrogen is 1.83%. 1.83% means that up to 1.83 ml of hydrogen can be dissolved per 100 ml of water.

This solubility is relatively small, but biologically, this solubility is about 0.8 mM, or about 1.6 mg per 1 liter of water. In the field of medical biology, both mM and mg are relatively large units. The doses of many of the drugs we take are mostly on this order of magnitude.

If we have doubts about the solubility of hydrogen, we can compare the solubility of another important gas, oxygen. The solubility of oxygen is 2.4% under standard conditions, which is very close to the solubility of hydrogen of 1.83%. If oxygen is considered insoluble or hardly soluble in water, the fish living in the water cannot breathe oxygen.

From Qingsiyu

MUQI-China patent hydrogen water bottle with patent hydrogen ceramic ball