Ferrous sulfide Chemical Properties
- Melting point:
- 1195 °C
- Boiling point:
- decomposes [HAW93]
- 4.84 g/mL at 25 °C(lit.)
- storage temp.
- Storage temperature: no restrictions.
- Specific Gravity
- Water Solubility
- Soluble in water(0.0062g/L ), in acids with evolution of hydrogen sulfide. Insoluble in nitric acid.
- Moisture Sensitive
- Solubility Product Constant (Ksp)
- pKsp: 17.2
- Stable. Incompatible with strong acids, strong bases, metal oxides. Avoid moisture.
- CAS DataBase Reference
- 1317-37-9(CAS DataBase Reference)
- EPA Substance Registry System
- Ferrous sulfide (1317-37-9)
Ferrous sulfide Usage And Synthesis
Iron(II) sulfide occurs in nature as the minerals magnetkies, troillite and pyrrhotine. The most important application of this compound is in Kipp’s apparatus as a source for laboratory preparation of hydrogen sulfide. It also is used in paints, pigments, and ceramics and lubricant coatings.
Iron(II) sulfide may be synthesized from the elements but the product is contaminated with iron. The reaction is exothermic and the heat of reaction melts iron. Pure sulfide may be obtained by using a slight excess of sulfur: the excess then is distilled off.
The compound also may be precipitated by treating an aqueous solution of an alkali metal sulfide with that of iron(II) chloride or any iron(II) salt solution:
S2– (aq) + Fe2+ (aq) → FeS(s)
Another method of preparation involves passing a mixture of hydrogen sulfide and hydrogen over iron(III) oxide at about 1,000°C:
Fe2O3 + 2H2S + H2 → 2FeS + 3H2O
Iron(II) sulfide reacts with acids evolving hydrogen sulfide:
FeS + 2HCl → H2S + FeCl2
The compound is readily oxidized under moist condition by action of air, forming triiron tetroxide and elemental sulfur:
3FeS + 2O2 → Fe3O4 + 3S
The above reaction is exothermic.
Iron(II) sulfide decomposes to its elements when heated above 1,100°C:
FeS → Fe + S
When heated with boiled water, it generates sulfuric acid and hydrogen:
4FeS + 8H2O + 7O2 → 4H2SO4 + 4H2 + Fe2O3
grey to brown-black lumps or powder
Ferrous sulfide can be used as a laboratory source of H2S; in the ceramic industry; as a paint pigment; in anodes; in lubricant coatings.
- MAGNESIUM SILICIDE
- LEAD IRON SULFIDE
- Iron(Ⅲ) sulfide
- FERROUS SULFATE
- Ferrous fumarate
- IRON SULFIDE,iron sulfide (naturally occurring mineral)
- copper iron sulfide
- COBALT IRON DISULFIDE
- Ferrous sulfide: (Iron sulfide),IRON SULFIDE,Ferrous sulfide: (Iron sulfide)
- Iron(III) sulfide
- Ferrous sulfide
- CARBONYL SULFIDE
- Hydrogen Sulfide
- Dimethyl sulfide
- Sodium sulfide
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