“Beyond this concentration, the stabilizing effect of NTA is more or less independent of its concentration and the dependency of the degradation rate of isoniazid on the concentration of EDTA becomes less pronounced.”
“The chelating agents NTA, EDTA , HEDTA and DTPA afford a stabilizing action towards isoniazid solutions.”
“The stability of isoniazid solutions increases markedly with increasing NTA or EDTA concentration up to 1 mmol/l.”