Fig. 6

Mutagenicity index (MI) of 6 PILs, featuring either an acetate or chloride anion, hydroxyl or ether functionalised groups on the cation and either secondary or tertiary ammonium cations. By changing between the acetate and chloride anion, there is little change in the MI. Secondary ammonium cation PILs show a comparable MI result to tertiary ammonium cation PILs in the mini Ames test. Methoxy ether functional groups also appear to have little impact on the MI of the PIL