Unsymmetrical dimethylhydrazine (UDMH) (1,1-Dimethylhydrazine) is a hypergolicrocket fuel[?] ingredient, often used in combination with the oxidiser, nitrogen tetroxide.
UDMH is toxic, and can explode in the presence of oxidisers.
... Neruda, poet
August 28 - Secondo Campini, Italian jet pioneer
November 30 - Clyfford Still, painter
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January 20 - Dmitri Ivanovich Mendeleev, Russian ...