IRON (II) OXIDE
IRON (II) OXIDE
CAS: 1345-25-1
Molecular Formula: FeO
IRON (II) OXIDE - Names and Identifiers
| Name | IRON (II) OXIDE |
| Synonyms | CI 77489 ironoxide(feo) IRON (II) OXIDE ironmonoxide[qr] ironmonooxide[qr] ironoxide[feo][qr] naturalwuestite[qr] |
| CAS | 1345-25-1 |
| EINECS | 215-721-8 |
IRON (II) OXIDE - Physico-chemical Properties
| Molecular Formula | FeO |
| Molar Mass | 71.85 |
| Density | 5.7 g/mL at 25 °C(lit.) |
| Melting Point | 1369°C |
| Water Solubility | Insoluble in water and alkalies. Soluble in HCl, H{2}SO{4}. Slightly soluble in HNO{3}Insoluble in water, alcohol and alkali. Soluble in hydrochloric acid and sulfuric acid. Slightly soluble in nitric |
| Appearance | 5 Mesh |
| Merck | 14,4052 |
| Storage Condition | Room Temprature |
| Stability | Stable. Incompatible with strong oxidizing agents. Highly flammable. |
| Sensitive | Air Sensitive |
| MDL | MFCD00016095 |
| Use | Uses Use of ferrous oxide: It is used as a pigment and has applications in cosmetics and tattoo inks. Ferrous oxide is also used in porcelain making to make the glaze green. |
IRON (II) OXIDE - Risk and Safety
| Hazard Symbols | F - Flammable |
| Risk Codes | 11 - Highly Flammable |
| Safety Description | S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. S7/9 - |
| UN IDs | UN 3178 4.1/PG 2 |
| WGK Germany | - |
| TSCA | Yes |
IRON (II) OXIDE - Upstream Downstream Industry
| Downstream Products | Sodium thiocyanate Iron oxide black |
IRON (II) OXIDE - Security information
| toxic substance data | 1345-25-1(Hazardous Substances Data) |
Last Update：2024-04-10 22:29:15
IRON (II) OXIDE - Nature
| EPA chemical information | Ferrous oxide (1345-25-1) |
Last Update：2024-04-10 22:29:15
IRON (II) OXIDE - Uses and synthesis methods
Introduction
Ferrous oxide is one of the oxides of iron. Its appearance is blue-gray powder, the chemical formula is FeO, and it is covalently combined with oxygen in the oxidation state of iron and oxygen. Its mineral form is kyrite (kyrite). Ferrous oxide is often easily confused with rust, but the main component of rust is hydrated iron oxide. Ferrous oxide is an anintegral compound, in which the ratio of iron and oxygen will change, ranging from Fe0.84O to Fe0.95O.
structure
Ferrous oxide belongs to the cubic crystal system (similar to the crystal structure of sodium chloride). Six oxygen atoms are connected around each iron atom to form an octahedral coordination, and six iron atoms are connected around each oxygen atom in the same situation. The reason for the occurrence of non-integral compounds is that because divalent iron is easily oxidized to ferric iron, a small amount of divalent iron in FeO is replaced with ferric iron, occupying tetrahedral voids in the lattice.
At less than 200K, the crystal structure of ferrous oxide will change slightly, becoming rhombus and antiferromagnetic.
Preparation
FeO can be made by heating ferrous oxalate under isolated air conditions.
Formation of ferrous oxide
FeO can also be obtained by reacting iron oxide with carbon monoxide (heating iron oxide in a reducing flame) at 900°C.
Last Update：2024-04-10 22:39:43
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