Influence of oxygen functionalities on the environmental impact of imidazolium based ionic liquids

► Environmental impact of oxygen functionalised imidazolium-based ionic liquids. ► Toxicity of ionic liquids towards Bacillus cereus ATCC 14579 and Rhodococcus rhodochrous ATCC 29672 as Gram positivebacteria, Pseudomonas aeruginosa ATCC 17504 and Escherichia coli ATCC 11303 as Gram negative ones. ► Biodegradation of ionic liquids by three bacteria R. rhodochrous ATCC 29672, Pseudomonas viridiflava strain 14b14, Nocardiaasteroïdesstrain 911 and the yeast Candida parapsilosis ATCC 20246. ► Aqueous solubility, octanol-water partition coefficient and diffusivity in water.