Senko hanabi
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Senko hanabi is a traditional Japanese firework and a type of sparkler. It is a thin shaft of twisted tissue paper about 20 centimeters long with one end containing a few grains of black powder. While
Senko hanabi being held in a hand
Potassium sulfide
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Potassium sulfide is an inorganic compound with the formula K2S. The colourless solid is rarely encountered, because it reacts readily with water, a reaction that produces potassium hydrosulfide and p
Senko hanabi
…is held straight down and lit, so that the flame is at the bottom. After a few seconds, a glowing, molten slag ball will form. The slag is reportedly potassium sulfide, which also contains carbon from the lamp black. After a while, the molten ball will initiate the second phase of the firework, silently spraying an…
Potassium sulfide
Powdered potassium sulfide anhydrous