Iron hydroxide
- CAS NO.：1309-33-7
- Empirical Formula: FeH3O3
- Molecular Weight: 106.87
- MDL number: MFCD00016080
- EINECS: 215-166-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 01:16:17
What is Iron hydroxide?
Chemical properties
brown flocculant precipitate; used in water purification, manufacturing pigments [HAW93]
Physical properties
Red-brown amorphous powder; density 3.40g/cm3; soluble in acids; insoluble in water and alcohol.
Definition
YELLOW IRON OXIDE: a yellow-brown mineral,FeO.OH, crystallizing in the orthorhombicsystem. It is formed as aresult of the oxidation and hydrationof iron minerals or as a direct precipitatefrom marine or fresh water (e.g.in swamps and bogs). Most limoniteis composed largely of cryptocrystallinegoethite. Goethite is mined asan ore of iron.
Properties of Iron hydroxide
| Density | 3.120 |
| solubility | Aqueous Acid (Slightly) |
| form | crystalline |
| color | yellow monoclinic crystals, crystalline |
| Water Solubility | insoluble H2O, alcohol, ether; soluble acids [HAW93] |
| CAS DataBase Reference | 1309-33-7(CAS DataBase Reference) |
| EPA Substance Registry System | Iron hydroxide (Fe(OH)3) (1309-33-7) |
Safety information for Iron hydroxide
Computed Descriptors for Iron hydroxide
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