Products Description of Direct Triiron Tetraoxide CAS #1317-61-9
Triiron tetroxide (Fe₃O₄) is naturally derived from magnetite, a naturally occurring iron oxide mineral. In laboratory preparation, it can be synthesized by adding sodium hydroxide solution to an aqueous solution containing a 1:2 molar ratio mixture of ferrous and ferric salts (such as 1 mol FeCl₂ and 2 mol FeCl₃). The resulting black hydroxide precipitate undergoes dehydration upon heating to form triiron tetroxide:
Fe²⁺(aq) + 2Fe³⁺(aq) + 8OH⁻(aq) → Fe₃(OH)₈(s)
Fe₃(OH)₈(s) → Fe₃O₄(s) + 4H₂O(g)
Additionally, triiron tetroxide can be produced through the partial oxidation of iron or iron(II) sulfate under controlled heating conditions with limited air supply. Another production method involves the reaction of iron metal with steam at high temperatures:
3Fe + 4H₂O → Fe₃O₄ + 4H₂
These versatile preparation methods enable the production of triiron tetroxide with consistent quality and reliable performance for various applications.
Triiron tetraoxide Chemical Properties
Melting point | 1538 °C(lit.) |
density | 4.8-5.1 g/mL at 25 °C(lit.) |
refractive index | 3 |
Fp | 7 °C |
storage temp. | -20°C |
solubility | Aqueous Acid (Slightly) |
form | powder |
color | black |
Specific Gravity | 5.2 |
Odor | at 100.00?%. odorless |
Water Solubility | Insoluble in water and organic solvents. Soluble in concentrated mineral acids. |
Crystal Structure | Inverse spinel type |
crystal system | Cube |
Merck | 144040 |
Space group | Fd3m |
Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.839410.839410.839419090900.5915 |
Stability: | Stable. Incompatible with strong acids, chloroformates, peroxides. |
CAS DataBase Reference | 1317-61-9(CAS DataBase Reference) |
NIST Chemistry Reference | Iron(ii,iii) oxide(1317-61-9) |
EPA Substance Registry System | Iron oxide (Fe3O4) (1317-61-9) |
Product Application of Direct Triiron Tetraoxide CAS #1317-61-9
Triiron tetroxide is primarily used as a black pigment and catalyst in applications such as the Haber process and water-gas shift reactions. It is also utilized as a contrast agent in MRI imaging.
Due to its magnetic properties and excellent coloring performance, triiron tetroxide is widely applied in magnetic materials, polishing compounds, cosmetics, pharmaceuticals, polymers, rubber products, fillers, building and construction materials, household appliances, and magnetic ink formulations.
