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1. It is a colorless, odorless small piece, particle, and massive monoclinic crystal with a bitter taste.
2. There are two kinds of salts: salt dihydrate and salt hexahydrate. Dihydrate salts are small white absorbent particles. Anhydrous salts are colorless deliquescent flakes or crystals.
3. At room temperature, it is a salt of six hydrate, and the water content can change with temperature, 2 molecules of crystal water are lost at 100 °C, and part of the hydrochloric acid gas is released at 110 °C, which is decomposed into oxygenated magnesium chloride at high temperature.
4. The relative density is 1.569, and the aqueous solution is neutral (pH value is 7.0).
5. It is easy to absorb moisture. Highly soluble in water (160g/100ml, 20 °C), soluble in ethanol.
6. Anhydrous magnesium chloride is a colorless hexagonal crystalline crystal, with a relative density of 2.177 and a melting point of 708 °C.