Iridium(III) Bromide Hydrate (IrBr3•xH2O)-Crystalline
Zinc Sulfide (ZnS)-Powder
Tantalum Hafnium Carbide (Ta4HfC5)-Sputtering Target
Cobalt-Chrome-Tungsten-Carbide-Nickel-Silicon-Boron Alloy (Co21Cr5W0.1C1Ni1.6Si2.4B)-Powder
Aluminum Silicon Magnesium (AlSiMg (72.25/25/2.75 at%))-Sputtering Target
Gallium Nitride (GaN)-Powder
Characteristic
Ammonium sulfate, (NH4)2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer.
Chemical formula:(NH4)2SO4
Molar mass: 132.14 g/mol
Appearance: Fine white hygroscopic granules or crystals
Density: 1.77 g/cm3
Melting point: 235 to 280 °C (455 to 536 °F; 508 to 553 K) (decomposes)
Solubility in water:70.6 g per 100 g water (0 °C);74.4 g per 100 g water (20 °C)
103.8 g per 100 g water (100 °C)
Solubility: Insoluble in acetone, alcohol and ether
Magnetic susceptibility (χ):-67.0·10−6 cm3/mol
Critical relative humidity:79.2% (30 °C)
Application
Ammonium sulfate is widely utilized as a fertilizer for alkaline soils. In biochemistry it is used for purification of proteins via ammonium sulfate precipitation method. As a food additive, it serves as an acidity regulator in flours and breads. It is used in the preparation of other ammonium salts, particularly ammonium persulfate. It is applied in several applications as a flame retardant and a wood preservative. It finds use as raw materials for various chemical products such as dyes and pharmaceutical products. A saturated solution of ammonium sulfate in heavy water is employed as an external standard in sulfur-33 NMR spectroscopy.