The use of an absorbing solution in a deacidification process of a gas to limit steel equipment corrosion low alloy

Disclosed is the use of an absorbing solution in a deacidification process a gaseous effluent containing acidic compounds such as CO2 or H2S to limit the corrosion of equipment made in low alloy steel and absorb acidic compounds from the gaseous effluent by contacting of the absorbing solution with the gaseous effluent. The absorbent solution comprises water and at least one specific nitrogen-containing compound of formula (I) below, and has a low corrosive effect vis-a-vis steels low alloy component surfaces deacidification equipment.