Ferrous sulfate
General Product Information
| Article | Ferrous sulfate |
| Synonyms | Iron(II) sulfate, Iron(II) sulphate; Ferrous sulfate, Green vitriol, Iron vitriol, Ferrous vitriol, Copperas, Melanterite, Szomolnokite |
| CAS No. | 7720-78-7 |
| EEG No. | 026-003-00-7 |
| EINECS No. | 231-753-5 |
| IMO | – |
| Tariff Code | 28332980 |
| UN No. | – |
| VLG/ADR | – |
Description
Ferrous sulfate is a white to pale yellow crystalline powder consisting of iron(II) sulfate. It is the anhydrous form of ferrous sulfate and is mainly used in industrial processes where a higher concentration of iron(II) ions is required. It is a widely used industrial chemical with diverse applications in Water Treatment, chemical synthesis, Agriculture and pigment production.
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White to blue-green.
- Grade: Technical.
- Solubility: Soluble in water.
- Shape: Crystals or powder.
Physical & Chemical Properties
| Chemical Structure | FeSO4 |
| Molar Weight | 151.91 g/mol |
| Melting Point | > 480 °C (decomposes) |
| Boiling Point | – |
| Density | Approx. 3.65 g/cm³. |
| Refractive Index | – |
| pH | – |
Applications
Iron sulfate is applied in various ways, for instance:
1. Chemical Industry
Used as a reductor in various chemical syntheses and at the production of other iron compounds or pigments.
2. Agriculture & Horticulture
Serves as an iron source at treating iron deficiencies in crops (chlorosis). Also used at moss control on lawns.
4. Water Treatment
Applied as a coagulant or precipitant in drinking water and wastewater treatment plants, especially for the removal of phosphates, heavy metals and suspended solids.
5. Construction
Added to cement and concrete to obtain a natural yellow or brownish color and improve workability.
Interessing Links
- CAS Common Chemistry – Ferrous sulfate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Ferrous Sulfate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Iron(II) sulfate