Procedures for the deoxygenation of liquids

Abstract

Procedures are described for the deoxygenation of pure liquids, liquid mixtures and solutions of solids in liquids using tris(2,2′-bipyridyl)cobalt(II) perchlorate {[Co(bpy)₃](CIO₄)₂} and sodium tetrahydroborate (NaBH₄) in a colour-indicating reaction. The efficiency of the procedures is assessed by reference to the ¹H spin-lattice relaxation times of a variety of materials. The values obtained show that the procedures are efficient, reproducible and time saving.