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Molecular formula : CCaN2
MW : 80.11
CAS No. :156-62-7
nature : for the pure white powder. Melting point about 1,340 ° C and relative density of 2.29 (20 / 4 ° C), hydrochloric acid can be dissolved in the water generated cyanamide. There hygroscopicity, showed alkaline reaction.
Preparation Methods : tourmaline crush infiltration 1-3% fluorite or calcium chloride, mixing, the rotary kiln heated to about 1,100 ° C, which leads to reaction after nitrogen products.
purposes : for fertilizer, because cyanide CaCN2 a strong alkaline, acidic soil in general for basic fertilizer use. When initially formed in water cyanamide, toxic to plants, but it quickly turned into ammonia. The effectiveness of such drugs so that the plant's leaves off, it is also used as herbicides, fungicides, insecticides and cotton defoliant. Industry will be used for steel nitriding. Gold and silver ore processing, emissions of nitrogen oxide removal, wastewater formaldehyde and for the removal of inhibitors such as brine. Also used for calcium cyanide ammoniated raw materials, produce plastics, pesticides, explosives and so on.
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