Ferrous sulfate heptahydrate, also known as iron (II) sulfate heptahydrate (FeSO₄·7H₂O), is produced by the reaction of sulfuric acid with iron. This compound typically appears as pale, blueish-green crystals or granular solids. Upon gradual heating, ferrous sulfate heptahydrate undergoes dehydration, eventually transforming into anhydrous ferrous sulfate. The process of dehydration leads to the removal of the seven water molecules associated with the crystal structure, resulting in the formation of dry ferrous sulfate. This compound is commonly utilized in various industrial applications, including in the production of pigments, as a reducing agent, and in water treatment processes.
Parameters
Melting point | 64 °C |
bulk density | 600kg/m3 |
density | 1.898 g/mL at 25 °C (lit.) |
vapor pressure | 14.6 mm Hg ( 25 °C) |
storage temp. | Store at +15°C to +25°C. |
solubility | 25.6 g/100 mL (20°C) |
form | Solution |
color | Slightly greenish to blue |
Specific Gravity | 1.898 |
Odor | pale bluish-grn. cryst. or gran., odorless |
PH | 3.0-4.0 (25℃, 50mg/mL in H2O) |
Water Solubility | 25.6 g/100 mL (20 ºC) |
Sensitive | A ir Sensitive & Hygroscopic |
Merck | 14,4057 |
Exposure limits | ACGIH: TWA 1 mg/m3 |
Stability: | Stable. Substances to be avoided include strong oxidizing agents. Air and moisture sensitive. |
InChIKey | SURQXAFEQWPFPV-UHFFFAOYSA-L |
LogP | -1.031 (est) |
CAS DataBase Reference | 7782-63-0(CAS DataBase Reference) |
EPA Substance Registry System | Ferrous sulfate heptahydrate (7782-63-0) |
Safety Information
Hazard Codes | Xn |
Risk Statements | 22-36/38 |
Safety Statements | 36/37/39-46 |
WGK Germany | 1 |
RTECS | NO8510000 |
F | 10-23 |
TSCA | Yes |
HS Code | 28332950 |
Toxicity | LD50 in mice: 65 mg/kg i.v.; 1.52 g/kg orally (Hoppe) |
Organic raw materials; Pearlescent agents; Organic chemicals; Surfactants; Raw materials for cosmetics; Cosmetic additives; Household chemicals; Cosmetic ingredients; Chemical intermediates; Esters; Chemical raw materials; 627-83-8; Surfactants; Pharmaceutical applications.
