| Identification | More | [Name]
YELLOW IRON OXIDE | [CAS]
1309-33-7 | [Synonyms]
E 172
EISENOXID GELB
FERRIC HYDROXY OXIDE
FERRISPEC(R) PL COLOR YELLOW IRON OXIDE
FERRISPEC(TM) GC
GOETHITE
IRON (III) ALPHA-OXYHYDROXIDE
IRON (III) GAMMA-OXYHYDROXIDE
IRON(III) HYDROXIDE
IRON (III) HYDROXIDE, ALPHA
IRON (III) HYDROXIDE, GAMMA
IRON(III) HYDROXIDE OXIDE
IRON(III) OXIDE, HYDRATED
IRON OXIDE PIGMENT YELLOW
IRON PIGMENT YELLOW
YELLOW IRON OXIDE
Fe(OH)3
Iron hydroxide (Fe(OH)3)
ironhydroxide(fe(oh)3)
irontrihydroxide | [EINECS(EC#)]
243-746-4 | [Molecular Formula]
FeHO2 | [MDL Number]
MFCD00064782 | [Molecular Weight]
88.85 | [MOL File]
1309-33-7.mol |
| Hazard Information | Back Directory | [Chemical Properties]
brown flocculant precipitate; used in water purification, manufacturing pigments [HAW93] | [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. |
| Questions And Answer | Back Directory | [Physical Properties]
Red-brown amorphous powder; density 3.40g/cm3; soluble in acids; insoluble in water and alcohol.
| [Uses]
The compound is used in pigments and in water purifications.
| [Preparation]
Iron(III) hydroxide is obtained as a brown gelatinous precipitate by adding a strong base to a solution of iron(III) salt:
FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl
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