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
- Metal industry: Used in the production of iron blue, brass coloring baths, and iron plating solutions
- Medicine: Used in medicine
- Chemical analysis: Used in chemical analysis
- Pesticides: Used to correct iron deficiencies in pesticide sprays
- Fertilizers: Used in complete analysis fertilizers that contain iron
- Titrations: Used as a reductometric standard in titrations involving ceric, dichromate, and permanganate ions
- Electroless plating: Used in electroless plating of Fe-based alloys
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. |
Formula Weight: 392.14
Linear Formula: Fe(NH4)2(SO4)2·6H2O
Molecular Formula: H8FeN2O8S2 · 6 H2O
Assay Percent Range: 98.5 to 101.5 %
| Physical State | Crystals |
| Color | Pale green |
| Odor | Odorless |
| pH | 3-5 (5% aqueous solution) |
| Vapor Pressure | No information found |
| Vapor Density | No information found |
| Evaporation Rate | Evaporation Rate |
| Viscosity | No information found |
| Boiling Point | Not available |
| Freezing/Melting Point | 100°C (decomposes) |
| Decomposition Temperature | 100-110°C |
| Solubility in water | 269 g/l @ 20°C |
| Specific Gravity/Density | 1.865 |
| Molecular Formula | FeSO4(NH4)2so46H2O |
| Molecular Weight | 392.14 |
USES
- Analytical chemistry: Ferrous ammonium sulfate is used as a reductometric standard in titrations that involve ceric, dichromate, and permanganate ions.
- Iron plating: Ferrous ammonium sulfate is used in iron plating baths.
- Photography: Ferrous ammonium sulfate is used in photography.
- Brass coloring: Ferrous ammonium sulfate is used as an ingredient in brass coloring baths.
- Pesticides: Ferrous ammonium sulfate can be used in pesticide sprays to help correct iron deficiencies.
- Turf: Ferrous ammonium sulfate can be used to improve the color of turf.
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
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:
Ferrous Ammonium Sulfate
