Iron(II) oxide , 99.5 , 1345-25-1

Synonym(s):
Ferrous oxide;Iron monooxide

CAS NO.：1345-25-1

Empirical Formula: FeO

Molecular Weight: 71.84

MDL number: MFCD00016095

EINECS: 215-721-8

PRODUCT Properties

• Melting point: 1369°C
• Density: 5.7 g/mL at 25 °C(lit.)
• solubility: insoluble in H2O, alkaline solutions; soluble in acid solutions
• form: 5 Mesh
• color: black cubic crystals, crystalline
• 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 acid.
• Sensitive: Air Sensitive
• Crystal Structure: NaCl type
• crystal system: Cube
• Merck: 14,4052
• Space group: Fm3m
• Lattice constant:
  • a/nm: 0.4326
  • b/nm: 0.4326
  • c/nm: 0.4326
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.081
• Dielectric constant: 14.2（16.0℃）
• Stability: Stable. Incompatible with strong oxidizing agents. Highly flammable.
• CAS DataBase Reference: 1345-25-1(CAS DataBase Reference)
• EPA Substance Registry System: Ferrous oxide (1345-25-1)

Description and Uses

When iron is heated in a low partial pressure of oxygen above 575°C, FeO is formed. However, this is only stable at high temperatures and decomposes into iron and Fe304 when it is cooled slowly. To obtain crystalline FeO the high temperature product must be quenched rapidly to stop this disproportionation.

In manufacture of green, heat-absorbing glass; in steel manufacture; in enamels; as catalyst.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319
• Precautionary statements: P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313
• Hazard Codes: F
• Risk Statements: 11
• Safety Statements: 16-33-7/9
• RIDADR: UN 3178 4.1/PG 2
• OEB: B
• OEL: TWA: 5.0 mg/m3
• WGK Germany: -
• TSCA: Yes
• Hazardous Substances Data: 1345-25-1(Hazardous Substances Data)