| Identification | More | [Name]
Iron hydroxide oxide | [CAS]
20344-49-4 | [Synonyms]
c.i. 77492
FERRIC HYDROXIDE
IRON HYDROXIDE
iron hydroxide oxide
IRON (III) HYDROXIDE
pigment yellow 42
ironhydroxideoxide(fe(oh)o)
313 IRON OXIDE YELLOW 313
IRON OXIDE YELLOW HD718
IRON(III)OXIDE, HYDRATED, 50-80 MESH
IRON(III)OXIDE, HYDRATED, 30-50 MESH
ferric hydroxide oxide
iron(iii) oxyhydroxide
Eisen(III)-hydroxidoxid
Ferric oxyhydroxide
Iron(III) hydroxide, γ-phase
Iron(III) hydroxide, ɑ-phase
Hodgsons Bayferrox Yellow 930
Hodgsons Bayferrox Yellow 415
Hodgsons Bayferrox Yellow 420 | [EINECS(EC#)]
243-746-4 | [Molecular Formula]
FeHO2 | [MDL Number]
MFCD00016080 | [Molecular Weight]
88.85 | [MOL File]
20344-49-4.mol |
| Chemical Properties | Back Directory | [Appearance]
reddish-brown crystalline solid | [Melting point ]
135°C | [density ]
3.4-3.9 | [RTECS ]
NO7400000 | [solubility ]
DMSO (Sparingly), Methanol (Slightly), Water (Soluble) | [form ]
crystalline
| [color ]
Red-brown | [Stability:]
Stable. | [Water Solubility ]
Soluble in mineral acids. Insoluble in water and ethanol. | [Merck ]
14,4025 | [Exposure limits]
ACGIH: TWA 1 mg/m3
NIOSH: TWA 1 mg/m3 | [Cosmetics Ingredients Functions]
COLORANT
LIGHT STABILIZER | [InChI]
InChI=1S/Fe.H2O.O/h;1H2;/q+1;;/p-1 | [InChIKey]
AEIXRCIKZIZYPM-UHFFFAOYSA-M | [SMILES]
[Fe](=O)O | [CAS DataBase Reference]
20344-49-4(CAS DataBase Reference) | [NIST Chemistry Reference]
iron(III) oxide hydroxide(20344-49-4) | [EPA Substance Registry System]
Iron hydroxide oxide (Fe(OH)O) (20344-49-4) |
| Hazard Information | Back Directory | [Chemical Properties]
reddish-brown crystalline solid | [Uses]
In purifying water; as absorbent in chemical processing; as pigment; as catalyst. | [Uses]
Iron(III) hydroxide, γ-phase is used in purifying water and as an absorbent in chemical processes. It is involved in the preparation of iron oxide-hydroxides nanoparticles, which is used as a very good adsorbent for lead removal from aquatic media. It is also used as a pigment, as a catalyst and in aquarium water treatment as a phosphate binder. Further, it is employed in the paints-lacquers-varnishes industry. | [Preparation]
A cold solution of 810 g of Fe(NO3)3?9H2O in two liters of water is poured slowly, with vigorous stirring, into an ammonia solution prepared by dissolving 120 g of gaseous NH3 in two liters of water (cooling necessary). The hydroxide which precipitates is amorphous to x-ray analysis. It is washed by stirring at least five times with eight-liter portions of cold water, each portion being decanted as completely as possible. The residual slurry is then stirred with sufficient cone. KOH solution to give a mixture approximately 2N and allowed to stand for 3-4 hours. Finally 100℃ steam is bubbled through for two hours. The precipitate is thereby transformed completely into bright-yellow α-FeO(OH), which shows a crystalline x-ray diffraction pattern.
| [General Description]
contains varying amounts of MgO2, SiO2, CaO, Al2O3 |
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