It was reported that the cumulative conditional formation constant of Hg for TU(ˇHg(TU)2+4≈ 1023at c= 0.2 M) was constant in the pH range of0.0–7.0 In other words, the complex stability of Hg-TU com-Tplexes (by implication for organomercurial species) was nearly independent of pH, which meant that the Hg-TU complexes were expected
to form in the examined pH range of 0.5–5.0