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In the U.K., fertilizer labeling regulations allow for reporting the elemental mass fractions of phosphorus and potassium.The regulations stipulate that this should be done in parentheses after the standard N-P-K values, as in "15-30-15 (15-13-13)".
Salt indexes can have some relation to the rate of fertilizer burn in plants, with fertilizers of a salt index above 20 not being recommended for use with particularly sensitive crops. Below is a chart of salt indexes and percent nitrogen of some of the most commonly used fertilizers. [4]
Calcium carbonate precipitates as a solid, leaving ammonium sulfate in the solution. (NH 4) 2 CO 3 + CaSO 4 → (NH 4) 2 SO 4 + CaCO 3. Ammonium sulfate occurs naturally as the rare mineral mascagnite in volcanic fumaroles and due to coal fires on some dumps. [14] Ammonium sulfate is a byproduct in the production of methyl methacrylate. [15]
ABC dry chemical is usually a mix of monoammonium phosphate and ammonium sulfate, the former being the active component. The mix between the two agents is usually 40–60%, 60–40%, or 90–10% depending on local standards worldwide. The USGS uses a similar mixture, called Phos Chek G75F. [2]
Ammonium sulfamate (or ammonium sulphamate) is a white crystalline solid, readily soluble in water. It is commonly used as a broad spectrum herbicide , with additional uses as a compost accelerator, flame retardant and in industrial processes.
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Two sulfate nitrates are in the class of anthropogenic compounds, accidentally made as a result of human activities in fertilizers that are a mix of ammonium nitrate and ammonium sulfate, and also in the atmosphere as polluting ammonia, nitrogen dioxide, and sulfur dioxide react with the oxygen and water there to form solid particles.
Sodium chloride (common table salt, NaCl) Calcium chloride (CaCl 2) Potassium chloride (KCl) Magnesium chloride (MgCl 2) Ammonium nitrate (NH 4 NO 3) Ammonium sulfate [(NH 4) 2 SO 4] Potassium acetate (CH 3 COOK) Urea [(NH 2) 2 CO] Propylene glycol (C 3 H 8 O 2) Calcium magnesium acetate (C 4 H 6 O 2 Ca and C 4 H 6 O 2 Mg) Sodium ferrocyanide ...