It is applied as a gas sweetening agent to remove hydrogen sulfide and CO from natural gas in water treatment as a pH stabilizer in surfactants corrosion inhibitors and personal care formulations.

Helps dissolve and transport nutrients in soil. Maintains conditions for organisms that prefer slightly acidic environments. Aids certain chemical reactions and processing steps. Useful for studying acid-base balance in natural systems.

Mildly acidic. Common in rainwater or water containing dissolved CO2 (forming weak carbonic acid). Still close to neutral not strongly acidic.