Reactive extraction is an optimal choice to conventional methods in the downstream process for the separation of succinic acid from fermentation broth. In the reactive extraction, aliphatic amines perform better as compare to other extractants used for recovery of succinic acid. Along with the aliphatic amines, the polar diluents like benzyl alcohol, 2-octanol, and 1-decanol ultimately affect the extraction efficiency of acid 1. The distribution coefficient for the various system was studied. When benzyl alcohol, 2octanol, and 1-decanol are used as diluents with TOA as extractant it gives a higher distribution coefficient up to 178 for benzyl alcohol, 22.29 for 2-octanol, and 21.98 for 1decanol. 2. The highest extraction efficiency was obtained 99.44% for benzyl alcohol, 95.70% for 2octanol, and 95.64% for 1-decanol. 3. It was concluded that benzyl alcohol performance better as compare to other diluents with TOA as an extractant and the sequence of extraction power was noted benzyl alcohol > 2octanol > 1-decanol. 4. As the increase in the initial concentration of TOA from 0.11-0.57 mol/kg, the extraction efficiency get increases. The TOA concentration above 0.57mol/kg, leading to the third phase formation. 5. When the TOA used with the benzyl alcohol having the initial concentration of 0.57 mol/kg, and the initial concentration of acid was at 0.26 mol/kg, it gives the best result with an extraction efficiency of 99.44%.