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Making Potassium Perchlorate
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IntroductionPotassium perchlorate KClO4 (also called Potassii Perchloras or Kalii Perchloras or Perchloras Kalicus/Potassicus) is the potassium salt of perchloric acid and is an oxidizer, used in chemistry to produce oxygen, but also used in fireworks. It is more stable than chlorate (KClO3), unlike chlorate, it can be mixed with sulfur so it is preferred over chlorate in fireworks. It is obtainable at chemicals supply shops, such as Merck or other large suppliers. It used to be available at the local chemist but this is getting harder and harder. With rather simple means you can make this yourself by electrolysis. Due to its very poor solubility in cold water, compared to sodium (per-)chlorate and chlorides, it is to prepare rather purely.
Last update: 2025 February 24 |
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