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Magnesium Sulphate
A compound containing magnesium, a commonly used chemical and drying agent, consisting of the magnesium cation Mg2+ (20.19% by mass) and the sulfate anion SO2−4. White crystalline solid, soluble in water, insoluble in ethanol. Usually encountered in the form of the hydrate MgSO4·nH2O, for various n values between 1 and 11. The most common is MgSO4·7H2O.
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Sodium Bisulfate
Sodium bisulphate, also known as sodium acid sulfate, is sodium chloride (salt) and sulfuric acid can react at high temperatures to produce a substance, anhydrous substance has hygroscopic, aqueous solution is acidic. It is a strong electrolyte, completely ionized in the molten state, ionized into sodium ions and bisulfate. Hydrogen sulfate can only self-ionization, ionization equilibrium constant is very small, can not be completely ionized.
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Ferrous Sulfate
Ferrous sulfate is an inorganic substance, the crystalline hydrate is heptahydrate at normal temperature, commonly known as “green alum”, light green crystal, weathered in dry air, the surface oxidation of brown basic iron sulfate in humid air, at 56.6℃ to become tetrahydrate, at 65℃ to become monohydrate. Ferrous sulfate is soluble in water and almost insoluble in ethanol. Its aqueous solution oxidizes slowly in air when it is cold, and oxidizes faster when it is hot. Adding alkali or exposure to light can accelerate its oxidation. The relative density (d15) is 1.897.
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Magnesium Chloride
An inorganic substance that is composed of 74.54% chlorine and 25.48% magnesium and usually contains six molecules of crystalline water, MgCl2.6H2O. Monoclinic crystal, or salty, have a certain corrosive. Magnesium oxide is formed when water and hydrogen chloride are lost during heating. Slightly soluble in acetone, soluble in water, ethanol, methanol, pyridine. It deliqueses and causes smoke in wet air, and sublimates when it is white hot in the gas stream of hydrogen.
