Spectrophotometric Study of the Reaction between Hydrazine and p. dimethylaminobenzaldehyde
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In order to realize an optical fibre chemical sensor for hydrazine in the Purex process, the reaction between hydrazine and p.dimethylaminobenzaldehyde (p.DMAB) in nitric acid medium was studied by spectropho-tometry and <SUP>1</SUP>H.NMR. The effect of temperature and acidity were determined. The equilibrium constant is of 7, 800l/mol at 15°C and decreases to 600 at 55°C. The reaction is fully reversible. In order to keep p.DMAB out of damage, the acidity working range has to be within 0.1 to 1.0 M in nitric acid medium. This reaction is suitable for the application of optical fibre chemical sensors because direct reversibility or regeneration by temperature or acidity may be possible.
- Journal of Nuclear Science and Technology
Journal of Nuclear Science and Technology 33(9), p.731-735, 1996-09-25
Atomic Energy Society of Japan