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nature : 5 Arsenic oxyacids. There are arsenic, migraine arsenic, coke arsenic. Arsenic is usually correct H3AsO4 1/2H2O. Colorless transparent crystal. Toxic! Density 2.0-2.5. 35.5 ° C melting point. The loss of 160 ° C water. Dissolved in water, ethanol, alkali solution and glycerol. First heating arsenic into coke (not free existence, only salts), following the partial arsenic into, again into two five oxidation of arsenic. The main system for calcium arsenic, lead, arsenic pesticides are used, such as glass. By arsenic or arsenic trioxide and nitroglycerin role in the system.
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