The enneahydrate MgSO4·9H2O was identified and characterised only not too long ago, even though It appears straightforward to create (by cooling a solution of MgSO4 and sodium sulfate Na2SO4 in ideal proportions). The heptahydrate requires its frequent identify "Epsom salt" from a bitter saline spring in Epsom in Surrey, England, https://remingtonvbdgj.blogprodesign.com/53983103/5-simple-techniques-for-oxalic-acid-99