تحضير و تشخيص و دراسة الخواص التحليلية ل1-اسيتل-3-[( 5- نتروفوران-2-ايل)‎ متيلين] بيبرازين -2،5-ديون

Abstract EN

In this paper, 1- Acetyl-3-[(5-NitroFuran-2-yl] Methylene Pip -2, 5-dion, as a new diketonpiperazine derivative was prepared and characterized and studied its analytical properties.

This compound has in acidic media a yellow color, while in basic medium sharply changes to violet color.

The pKa of this compound has been calculated by a spectrophotometric method and it was (11.27± 0.07), the pH transition range was between (10.4- 11.7).

The indicator was used for the end point determination of the titration standard samples of solution (HCl) with a standard solution of NaOH, and in titration standard samples of solution (H3PO4) with a standard solution of NaOH.

The results were compared with the results of titrimetric methods that used known indicators for end point determination.

A statistical treatment for all results, shows that the end point of determination titration strong acid with strong base using (1-Acetyl-3-[(5- NitroFuran-2- yl] Methylene Piperazine-2, 5- dion), is possible and this indicator is not less important than previously known indicators for the end point determination