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2815679 
Technical Report 
The Mass Spectra Of Mono-Substituted Hydrazine Salts 
Blair, JA; Gardner, RJ 
1970 
NIOSH/00144996 
291-298 
A method was developed to determine the general fragmentation of the mass spectra of monosubstituted hydrazine salts. Both hydrochlorides and oxalates were used for this study. An analysis of benzylhydrazine (555964) was prepared by two methods. The first was by passing dry hydrochloride gas into an ethereal solution of the hydrazine. The second was by the diborane reduction of benzaldehyde-hydrazone. Samples prepared by these methods exhibited similar mass spectra and the degree of recrystallization did not alter them. The mass spectra of tert-butylhydrazine (32064678), tert-butylhydrazine-hydrochloride 7400273), tert-butylhydrazine-oxalate (40711419), methylhydrazine (60344) and methylhydrazine-hydrochloride (7339539) were qualitatively identical with small quantitative differences. Intense peaks in an esterified methylhydrazine rose primarily from the ester. The authors conclude that general fragmentation does occur in all hydrazines. The exception is in the case of tert-butylhydrazine where an appropriate metastable compound has been found.