Preparation of Hydrazine sulfate
2 NH3 + NaOCl + H2SO4 ---> N2H4*H2SO4 + NaCl + H2O
141 ml of Chlorox bleach (5.25% NaOCl) was added to 200 ml of 20% ammonium hydroxide and 5 ml of 1% Ca(OH)2 in a one liter Erlenmeyer flask. The mixture was rapidly heated to boiling and maintained until the volume was reduced to about half, which required about one-half hour. The solution was rapidly cooled and dilute sulfuric acid was added until a pH of 7-8 has attained and the precipitate that formed was separated by filtration. The cold filtrate was strongly acidified with 40 percent sulfuric acid. The white precipitate was filtered, washed with methanol and air dried. Melting point 254°C (lit. 254°C).
A too big reference work on Hydrazine: http://www.josseybass.com/Corporate/Website/Objects/Products/0%2C9049%2C104469%2C00.html (http://www.josseybass.com/Corporate/Website/Objects/Products/0%2C9049%2C104469%2C00.html)
for any synthesis requiring chromatography.
http://www.rpi.edu/dept/chem-eng/Biotech-Environ/CHROMO/chromintro.html (http://www.rpi.edu/dept/chem-eng/Biotech-Environ/CHROMO/chromintro.html)
I moved this info to Post 243547 (https://www.thevespiary.org/talk/index.php?topic=8914.msg24354700#msg24354700)
(foxy2: "Hydrazine Info Ect.", Methods Discourse)
Do Your Part To Win The War