Ferrous Ammonium Sulfate is a pale green or blue green powder or sand like solid. It is used in photography analytical chemistry and Iron plating baths.
APPLICATION
Ferrous ammonium sulfate (anhydrous) is a compound of ammonium, iron and sulfate in which the ratio of ammonium to iron(2+) to sulfate ions is 2:1:2. It has a role as a ferroptosis inducer. It is a metal sulfate, an iron molecular entity and an ammonium salt.
PHYSICAL PROPERTIES
Appearance | Ferrous ammonium sulfate is a pale green or blue-green crystalline powder or sand-like solid. |
Solubility | Ferrous ammonium sulfate is soluble in water, but insoluble in ethanol and acetone. |
Melting point | Ferrous ammonium sulfate melts and begins to decompose at 100 °C. |
pH | Ferrous ammonium sulfate has a pH of 3-5 at 20 °C and 50 g/L in water. |
USES
Ferrous Ammonium Sulfate
Ferrous Ammonium Sulfate solutions are used as reductometric standards in titrations involving Ceric, Dichromate and Permanganate ions, as well as other oxidizers. Since Ferrous ion is easily oxidized by air to Ferric ion, Ferrous Ammonium Sulfate solutions are not as stable as other reductometric standards such as Arsenic Trioxide and Sodium Oxalate solutions, but they do not have the toxicity or environmental problems of the others. Because of this inherent instability, it is recommended that Ferrous Ammonium Sulfate solutions be restandardized periodically when extreme accuracy is required.
Freshly standardized Ferrous Ammonium Sulfate solutions are used in the determination of Chlorine in drinking water, among other applications. Typical reactions involving Ferrous ions are:
Other name
AMMONIUM FERROUS SULFATE
AMMONIUM IRON SULFATE
AMMONIUM IRON SULFATE (2:2:1)
DIAMMONIUM FERROUS DISULFATE
DIAMMONIUM IRON DISULFATE
FERROUS AMMONIUM SULFATE
FERROUS AMMONIUM SULFATE HEXAHYDRATE
FERROUS AMMONIUM SULPHATE
FERROUS DIAMMONIUM DISULFATE
IRON AMMONIUM SULFATE
MOHR'S SALT