BI-0230 (OTTO) 1-Butyl-3-methylimidazolium hydrogen sulphate, ≥95% (HPLC) Cas 262297-13-2 - used as an additive to accelerate current efficiency, lower power consumption, and enhance the surface morphology during the electrodeposition of zinc from acidic sulfate solutions. 1-Butyl-3-methylimidazolium hydrogen sulphate, ≥95% (HPLC) Cas 262297-13-2 - used as catalyst for the preparation of 1,8-dioxo-octahydroxanthenes.