TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The secondary amine function is connected to at least one quaternary carbon or two tertiary carbons. The triamine is N,N-dimethyl-N'-(1-(dimethylamino)-2-propyl)-1,2-ethanediamine, N,N-diethyl-N'-(1 (dimethylamino)-2-propyl)-1,2-ethanediamine, 3(N,N-dimethylaminopropyl)imino-2-(N,N-dimethylpropylamine), N,N-diethyl-N'-(1(dimethylamino)-2-propyl)-1,3-propanediamine, (N,N-dimethyl-N'-(3-N-morpholinopropyl))-1,2-propanediamine, N,N-diethyl-N'-(1(dimethylamino)ethyl)-1,4-pentane diamine, N,N-diethyl-N'-(2-ethyl-N''-morpholino)-1,3-propanediamine, N,N-dimethyl-N'-(2-ethyl-N''-morpholino)-1,3-propanediamine, N,N-diethyl-N'-(2-ethyl-N"-pyrrolidino)-1,3-propanediamine, N,N-diethyl-N'-(2-ethyl-N"-piperidinyl)-1,3-propanediamine, N,N-diethyl-N'-(1(dimethylamino)-2-propyl)-1,4-pentane diamine, N,N-diethyl-N'-(1(dimethylamino)-3-butyl)-1,4-pentane diamine, N,N-diethyl-N'-(1(diethylamino)-3-butyl)-1,4-pentane diamine, and N,N-diethyl-N'-(1(diethylamino)-2-methyl-3-pentyl)-1,4-pentane diamine. The absorbent solution comprises 10-60 wt.% of triamine and 10-90 wt.% of water. The absorbent solution further comprises greater than and less than 20 wt.% of an activator compound having a primary or secondary amine function. The activator compound is: monoethanolamine, N-butylethanolamine, aminoethylethanolamine, diglycolamine, piperazine, N-(2-hydroxyethyl)piperazine, N-(2-aminoethyl)piperazine, morpholine and 3-(methylamino)propylamine. The absorbent solution further comprises a physical solvent comprising methanol and sulfolane. Preferred Process: The absorption step of acidic compounds is carried out at a pressure of 1-120 bars and at a temperature of 20-100 degrees C. The process further comprises: regeneration step of the absorbent solution filled with acid compounds by heating, expanding, and distillation. The step of regeneration is carried out at a pressure of 1-10 bars and at a temperature of 100-180 degrees C. Preferred Definitions:    R1-R8 = H, methyl or ethyl;    a, b = 1 or 2;    R9, R10 = methyl or ethyl; and    R11, R12 = H.