| 摘要 |
PURPOSE:To easily produce quickly dissolvable sulfamic acid having high purity which is handled easily, by press-forming powdery sulfamic acid comprising dry crystal particles of sulfamic acid crystallized out of a solvent before the particles are caked and crushing coarsely the press-formed product thereafter. CONSTITUTION:Dry crystal particles of sulfamic acid crystallized out of a solvent are crushed finely to pref. <=500mu particle size. After press-forming the obtd. powdery sulfamic acid with a pelletizing machine or a compacting machine, etc. before the powdery sulfamic acid is caked, then the formed product is crushed coarsely. Thus, aimed granules of quickly dissolvable sulfamic acid are obtd. when the granules are thrown into water, water permeates easily into voids in the inside of the granules. Accordingly, the granules of sulfamic acid are dissolved quickly.
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