SYNTHESIS, PHYSICAL PROPERTIES AND TOXICITY STUDIES OF IONIC LIQUIDS TO PREDICT THE HAZARD POTENTIAL ON HUMAN AND THE ENVIRONMENT

The toxicities of the synthesised ILs were measured using three different species
which were: fish, bacteria and human cells. Fish are the important consumers in the
aquatic food chain, and they play a vital role in keeping the aquatic ecosystem
balanced. Therefore, it is necessary to determine the toxicity of the ILs on fish when
the impact of the ILs on the aquatic environment is evaluated. The acute toxicity of
imidazolium and ammonium ILs was evaluated against a freshwater organism: Guppy
fish, Poecilia reticulata. The LC5os were determined according to the Organisation for
Economic Co-operation and Development (OECD) guideline 203 (fish acute toxicity
test) and found to be in the range of 36.30 to 177.83 mgL- 1
, which lay on a slightly
toxic to practically non-toxic basis on the acute toxicity rating scale by the Fish and
Wildlife Service (FWS).