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Instagram: / thoisoi Facebook: / thoisoi2 Hi everyone! In this video I explain ionic liquids and why they are the most expensive solvents in the world. I am holding a printer ink cartridge that costs 35 euros and contains only 5 ml of liquid ink, which makes the liquid in this cartridge one of the most expensive in the world. Attention! This video shows dangerous experiments! Do not repeat the experiments shown in this video! #Thoisoi_EN #IonicLiquids