Diammonium phosphate (DAP) is one of a series of water-solublesalts which can be produced when ammonia reacts with phosphoric acid. DAP is used as a fertilizer and a fire retardant. When applied as plant food, it temporarily increases the soilpH, but over a long term the treated ground becomes more acidic than before. It is incompatible with alkaline chemicals because its ammonium ion is more likely to convert to ammonia in a high-pH environment. Water (from the Old English word wæter and the German word Wasser) is a colorless, tasteless, and odorless substance in its pure form that is essential to all known forms of life and is known also as the most universal solvent. ... A substance is soluble in a fluid if it dissolves in the fluid. ... For other meanings of the word salt see table salt or salt (disambiguation). ... Ammonia is a chemical compound with the formula NH3. ... Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak mineral acid with the chemical formula H3PO4. ... Fertilizers are chemicals given to plants with the intention of promoting growth; they are usually applied either via the soil or by foliar spraying. ... For the heavy metal band see Soil (band) Soil is a general term for the material that lies on the surface of the earth, supporting the growth of plants and serving as a habitat for animal life from microrganisms to small animals. ... pH is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. ... For alternative meanings see acid (disambiguation). ... The common (Arrhenius) definition of a base is a chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. ... Fumes from hydrochloric acid and ammonia forming a white cloud of ammonium chloride The Ammonium cation is a positively charged polyatomic ion of the chemical formula NH4+ and a molecular mass of 18. ... Ammonia is a chemical compound with the formula NH3. ...
The normal ammoniumphosphate, (NH, is obtained as a crystalline powder, on mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH It is soluble in water, and the aqueous solution on boiling loses ammonia and the acid phosphate NH is formed.
Diammonium hydrogen phosphate, or diammoniumphosphate, (NH, is formed by evaporating a solution of phosphoric acid with excess of ammonia.
Monoammonium phosphate is often used in the blending of dry agricultural fertilizers.
Phosphate rock from layer A1 at the mine at Eshidiya which, following screening, is of a low grade and is subject to a wet beneficiation process involving washing and de-sliming before drying to produce 68/70 BPL grade phosphate rock.
Phosphate rock from layer A3 which is of a low grade following initial screening, is subject to washing and de-sliming, followed by a flotation process to remove the silicate impurities in the rock.
Phosphate rock from layers S1 and S2 requires the removing of clay and the reduction of chlorine content to produce medium grade, in the case of layer S1, and high grade, in the case of S2, phosphate rock.
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