The Production Process Of Zinc Dihydrogen Phosphate

2022-03-10

Ammonium dihydrogen Phosphate is mainly used as a fire retardant for phosphate fertilizer and wood, paper, and fabrics (such as a fire extinguisher for matchsticks and candle wicks), and is also used for making medicines. Also used as a ruminant feed additive.

By phosphoric acid and ammonia for acid and base reaction in the system. Stable in air. When the temperature is higher than the melting point, it decomposes and loses ammonia and water, forming ammonium metaphosphate and phosphoric acid and a mixture. There is a small part of decomposition at 100 °C.

Production Process

Ammonium monohydrogen phosphate metathesis method. The technological process of preparing ammonium dihydrogen phosphate by reacting phosphoric acid with ammonium bicarbonate and then reacting with potassium Chloride to generate potassium monohydrogen phosphate. It is obtained by feeding water, potassium chloride and ammonium bicarbonate in proportion, then adding a prescribed amount of phosphoric acid, fully stirring, adjusting the pH value, heating and concentrating to 110°C, cooling, crystallization, centrifugation, drying, and centrifugation. The concentrated mother liquor is a multi-element compound fertilizer containing nitrogen, phosphorus and potassium.

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Zinc Dihydrogen Phosphate

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