Determination of Water in 1,1-Dimethylhydrazine and Hydrazine by High Frequency Method

Abstract

329periodate in the presence of nitric and phosphoric acids, and measuring permanganate intensities spectrophotometrically.The data in Table I indicate that the precision and accuracy are satisfactory. Flame photometric determinations made on samples from which silica had or had not been removed by a single dehydration with hydrochloric acid were equally satisfactory when compared with standards similarly treated.

Determination of Water in 1, 1-Dimethylhydrazine, Diethylenetriamine, and Mixtures

“…Neutralization of these strong amine bases with excess glacial acetic acid, prior to titration with Fischer reagent, results in nonreproducible end points when the water content is less than 0.5 weight %. The determination of water in 1,1-dimethylhydrazine (UDMH) by a high frequency method appears to be highly dependent upon the nature and amount of impurities in the sample (6).…”

Determination of Water in Several Hydrazines

“…The increasing commercial interest in hydrazine and its alkyl derivatives indicates a need for a rapid and specific method for the determination of water in these substances. The only method that has been reported for water determination in this series of compounds is a nonspecific method utilizing the variation of the dielectric constant of the medium with composition (7). The dielectric constant is strongly dependent on the nature and the amount of impurities.…”