Zyklon B Splash 14 March 2007, Cervera de los Montes A4 (29,7 x 21,0 cm) Acrylic color, watercolor, pencil, color pencil, felt tip pen, ballpoint pen and white sticker on paper i Zyklon B was the brand of a cyanide-based insecticide notorious for its use by Nazi Germany to kill over one million people in the gas chambers of Auschwitz. The figures are from a water balloon bag. The list consists of chemical and biological warfare. Private collection, Valencia. Tags: Zyklon B, chemical warfare, biological warfare, Nazi, Germany, Auschwitz, balloon 579 / 779