History
Sodium Hydroxide was discovered by Humphrey Day while in England in the year 1807. The event or experiment that was used for this discovery is unknown. For quite a few years after its discovery it was considered an elementary substance and was called a fixes alkali (alkali is another word for base). Not much else is know about the history of Sodium Hydroxide, however it is also known that molten sodium hydroxide was used in the discovery of Sodium.