ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Oxidimetric determination of hydrazine salts

A. Jílek and J. Brandštetr

Military Technical Academy, Brno

Abstract: A direct detn. of hydrazine (I) with KMnO₄ in hot acid medium in the presence of KBr is described. As indicator azo dyes Victoria Rubin or Naphtol Blue Black 10B are recommended which are better than Indigo carmine. A potentiometric titration can be applied without colored indicator. In the presence of KBr, Ce(SO₄)₂ can be used for the detn. of I and both methods produce results which are in good agreement. From the present methods for detn. of I, the one applying KBrO₃ is the most reliable. KIO₃ method is less reliable. Excessive K₂Cr₂O₇ is detd. iodometrically when I is detd. with K₂Cr₂O₇ in the presence of KBr from the difference. The results are 1-2% lower.

Full paper in Portable Document Format: 710a611.pdf (in Czech)

Chemical Papers 7 (10) 611–622 (1953)