Sulphaguanidine is prepared by the
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The preparation method of a kind of sulfaguanidine of the present invention, step is as follows: add ammonium nitrate in reactor and dicyandiamide adds heat fusing, be passed through ammonia, prepares Guanidine nitrate (1:1)；Concentrated sulphuric acid heating is obtained sulfur trioxide, and prepares chlorosulfonic.
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