iron dihydroxide
- CAS No.
- 18624-44-7
- Chemical Name:
- iron dihydroxide
- Synonyms
- iron dihydroxide;IRON(II)HYDROXIDE;FERROUS-HYDROXIDE;Iron(II)dihydoxide;Iron hydroxide (Fe(OH)2)
- CBNumber:
- CB3928680
- Molecular Formula:
- FeH2O2
- Molecular Weight:
- 89.85968
- MDL Number:
- MOL File:
- 18624-44-7.mol
- MSDS File:
- SDS
Melting point | decomposes [CRC10] |
---|---|
Density | 3.400 |
form | white-green hexagonal crystals |
color | white-green hexagonal, hexane crystals, crystalline |
PH | 9.45(1 mM solution);9.45(10 mM solution);9.45(100 mM solution) |
Water Solubility | 0.00015g/100mL H2O (18°C) [CRC10] |
Solubility Product Constant (Ksp) | pKsp: 16.31 |
FDA UNII | 7JIM5W32UU |
EPA Substance Registry System | Iron hydroxide (Fe(OH)2) (18624-44-7) |
iron dihydroxide Chemical Properties,Uses,Production
Chemical Properties
Iron(II) hydroxide is formed as a white flocculent precipitate when iron(II) salts are treated with alkali under air-free conditions. In the presence of air it rapidly darkens to a dark green and thence to an almost black colour; at this stage iron(II) and iron(III) are both present in the precipitate. With excess of oxygen the red-brown iron(III) hydrous oxide is formed. Ammonia incompletely precipitates iron(II) hydroxide due, at least in part, to the formation of iron(II) ammonia complexes.
Chemical Properties
white, amorphous powder(s) or white to pale green, hexagonal crystal(s); oxidizes in air [MER06]
Physical properties
Pale green hexagonal crystals (in partially oxidized form) or white amorphous powder (when pure); density 3.4g/cm3; decomposes on heating; insoluble in water (1.5 mg/L at 20°C), KSP 8.0 x 10-16; soluble in acids; moderately soluble in ammonium salt solutions; insoluble in alkalies.
Uses
The compound is used in abrasives; and in pharmaceutical applications.
Preparation
Iron(II) hydroxide may be prepared by precipitation of an iron(II) salt solution with caustic soda or caustic potash in the absence of air. Pure compound may be obtained by mixing solutions of caustic potash and iron(II) sulfate— both the solutions made in freshly boiled water—in a reducing atmosphere of hydrogen:
Fe2+ + 2OHˉ → Fe(OH)2
.
Structure and conformation
Iron(II) hydroxide crystallizes with the CdI2 layer structure in which every iron atom is surrounded by six OH groups.
iron dihydroxide Preparation Products And Raw materials
iron dihydroxide Suppliers
Supplier | Tel | Country | ProdList | Advantage | |
---|---|---|---|---|---|
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21667 | 55 |
Wuhan Monad Medicine Tech Co.,LTD | 02768782018 18771942761 | sales01@whmonad.com | CHINA | 992 | 58 |
Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | 1026@dideu.com | China | 8672 | 58 |
GIHI CHEMICALS CO.,LIMITED | +8618058761490 | info@gihichemicals.com | China | 50003 | 58 |
Shaanxi Dideu Newmaterial Co., Ltd. | 029-87576359 15353716720 | 1039@dideu.com | China | 10011 | 58 |
View Lastest Price from iron dihydroxide manufacturers
Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
---|---|---|---|---|---|---|---|---|
2021-08-31 | Iron hydroxide(Fe(OH)2)
18624-44-7
|
US $50.00 / KG | 1Kg/Bag | 99.99% | 20 tons/month | Wuhan Monad Medicine Tech Co.,LTD |
- Iron hydroxide(Fe(OH)2)
18624-44-7
- US $50.00 / KG
- 99.99%
- Wuhan Monad Medicine Tech Co.,LTD