Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
The use of an ethanolic type of this compound is used at reflux as a part of the Ing-Manske procedure to cleave N-alkylated phthalimide derivatives for use in the Gabriel Synthesis. The original commercial process for producing this involves, in the first steps, the oxidation of ammonia to chloramine with sodium hypochlorite. This compound is involved in the transformation of the carbonyl group of a ketone or aldehyde into a methyl group in the Wolf-Kishner reduction. Under the code name "B-Stoff," a hydrated version of this compound was used to initiate combustion in the BV 143 during WWII and is used in the APUs of the International Space Station as a monopropellant. Produced in the Olin Raschig process, for 10 points, name this compound with formula N2H4.
A:
Science