1.1 Internal anti-caking
internal anti-caking agent is mainly used in fertilizer production process, improve moisture (critical relative humidity increase, or slowing the rate of absorption); increase the strength of the fertilizer particles, roundness, or change crystal morphology. Studies have shown that certain inorganic substances such as aluminum sulfate (Mg), potassium nitrate (magnesium, aluminum), ammonium polyphosphate (K), boric acid, copper oxide (iron, aluminum, magnesium) and the like, as well as certain organic compounds, such as p-toluidine, , to prevent caking of fertilizer has a role azobenzene
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