Iron hydroxide oxide
- Iupac Name：hydroxy(oxo)iron
- CAS No.: 20344-49-4
- Molecular Weight：106.86702
- Modify Date.: 2024-09-19 11:38
- Introduction:
Iron hydroxide oxide, with the chemical formula FeO(OH) and CAS registry number 20344-49-4, is a compound known for its various applications. This compound is commonly used as a pigment in paints and coatings due to its reddish-brown color. It is also used in the production of iron oxide pigments, which are widely used in the manufacturing of ceramics, plastics, and rubber. Iron hydroxide oxide is insoluble in water and is often used as a corrosion inhibitor in industrial processes. Additionally, it has been studied for its potential use in wastewater treatment due to its ability to adsorb heavy metals. Overall, iron hydroxide oxide is a versatile compound with important industrial applications.
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1. Names and Identifiers
- 1.1 Name
- Iron hydroxide oxide
- 1.2 Synonyms
dodecacarbonyl-triangulo-tri-iron dodecacarbonyltriiron dodecacarbonyltriiron(0) EINECS 243-746-4 ferric acid Ferric hydroxide oxide Ferric hydroxide oxide (Iron(III) oxide Ferric oxide hydroxide ferric oxide yellow Ferrous acid iron dodecarbonyl Iron monohydroxide monooxide iron oxide yellow Iron(III) hydroxide Iron(III) hydroxide, ^a-phase Iron(III) hydroxide, ^y-phase Iron(III) hydroxide, alpha-phase Iron(III) hydroxide, gamma-phase iron(III) oxide Iron(III)oxide,Ferric hydroxide oxide MFCD00016080 tri-iron dodecacarbonyl
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- 1.3 CAS No.
- 20344-49-4
- 1.4 CID
- 91502
- 1.5 EINECS(EC#)
- 243-746-4
- 1.6 Molecular Formula
- Fe(OH)3 (isomer)
- 1.7 Inchi
- InChI=1S/Fe.H2O.O/h;1H2;/q+1;;/p-1
- 1.8 InChIkey
- AEIXRCIKZIZYPM-UHFFFAOYSA-M
- 1.9 Canonical Smiles
- O[Fe]=O
- 1.10 Isomers Smiles
- O[Fe]=O
2. Properties
- 2.1 Density
- 3.4-3.9
- 2.1 Melting point
- 135 °C
- 2.1 Precise Quality
- 88.93260
- 2.1 PSA
- 23.06000
- 2.1 logP
- -0.29810
- 2.1 Appearance
- DryPowder; WetSolid
- 2.2 Storage
- Ambient temperatures.
- 2.3 Chemical Properties
- reddish-brown crystalline solid
- 2.4 Color/Form
- Red-brown
- 2.5 Water Solubility
- Soluble in mineral acids. Insoluble in water and ethanol.
- 2.6 Stability
- Stable.
- 2.7 StorageTemp
- Store containers closed in ambient location.
3. Use and Manufacturing
- 3.1 Methods of Manufacturing
- ?Method 1: ferrous sulfate oxidation reaction of sulfuric acid and iron filings to produce ferrous sulfate, adding sodium hydroxide and oxidation into the air to prepare nuclei, and then in the nucleus suspension plus ferrous sulfate and iron, heating drum into the air Oxidation, filter press, rinse, dry, crushed to obtain iron oxide yellow. its
Fe + H2SO4 → FeSO4 + H2 ↑
FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4
4Fe (OH) 2 + O2 → 4FeOOH + 2H2O
H2SO4 + Fe + 7H2O → FeSO4 · 7H2O + H2 ↑
FeSO4 · 7H2O + O2 → 2Fe2O3 · H2O ↓ + 4H2SO4 + 2H2O Reaction conditions: 74 g iron filings were added to 1000 ml of 15% sulfuric acid until the iron scraps disappeared to produce ferrous sulphate at a concentration of about 200 g / L. To the ferrous sulfate solution prepared above, sufficient 30% sodium hydroxide was added, and 40% of the iron was converted into ferrous hydroxide [Fe (OH) 2] by stirring continuously. , Fe oxidation to Fe to form nuclei. Then, 90 g / L of iron scrap was added to produce 7 g / L of nuclei and 40 g / L of ferrous sulfate. The mixture was heated to 85 ° C and air-oxidized at 600 L / h for 64 h, then filtered and washed , Dry, crushed to obtain water-containing iron oxide yellow.
Method 2: Aromatic nitro-oxide method can produce aromatic amino compounds at the same time. The reaction equation is as follows:
Fe + H2O + R-NO2 → Fe2O3 · H2O + R-NH2
The reaction conditions were as follows: 560 parts of water, 36.5 parts of 32% hydrochloric acid, 160 parts of iron powder and 10 parts of aluminum powder were added to the reaction vessel. The reaction vessel was charged with 1660 parts of an aqueous solution containing 253 parts of 5-nitro-naphthalene sulfonic acid and 8-nitronaphthalene sulfonic acid at a pH of 6 and a temperature of 80 to 85C. The reaction temperature was 95 ~ 100 ℃ and the pH value was 6 ~ 6.5. Under these conditions, the reaction was carried out for 2 hours, 8 parts of 25% ammonia water was added, the reaction was further carried out for 4 hours, filtered, washed with 560 parts of water three times, The cake was mixed with 1000 parts of water, heated at 95-100 DEG C, 45 parts of 32% hydrochloric acid was added, stirred for 2 hours, filtered, washed with water until acid free, dried to obtain 160 parts of iron oxide yellow pigment, , Yield 96%.
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- 3.2 Usage
- In purifying water; as absorbent in chemical processing; as pigment; as catalyst. Iron hydroxide oxide Preparation Products And Raw materials Preparation Products
4. Safety and Handling
- 4.1 Hazard Declaration
- H373
- 4.1 RIDADR
- NONH for all modes of transport
- 4.1 Caution Statement
- P260, P314, P501
- 4.1 WGK Germany
- -
- 4.1 RTECS
- NO7400000
- 4.1 Safety
-
WGK Germany: -
- 4.2 Specification
-
?Hydrated ferric oxide , its cas register number is 20344-49-4. It also can be called?Ferric hydroxide ; Iron hydroxide oxide ; Iron oxides?; Iron hydroxide oxide (Fe(OH)O) .It is a?Fine, yellow, odorless powder.
- 4.3 Toxicity
- ?Non-toxic
5. MSDS
2.Hazard identification
2.1 Classification of the substance or mixture
Not classified.
2.2 GHS label elements, including precautionary statements
| Pictogram(s) | No symbol. |
| Signal word | No signal word. |
| Hazard statement(s) | none |
| Precautionary statement(s) | |
| Prevention | none |
| Response | none |
| Storage | none |
| Disposal | none |
2.3 Other hazards which do not result in classification
none
6. Other Information
- 6.0 Usage
- Iron(III) hydroxide, alpha-phase, is used as a catalyst for proteomics research. It is also used as a pharamaceutical intermediate.
- 6.1 Usage
- Iron(III) hydroxide is used in purifying water and as an absorbent in chemical processes. It is also used as a pigment and as a catalyst. Further, it is used in some tattoo ink and in aquarium water treatment as a phosphate binder.
- 6.2 Usage
- Iron(III) hydroxide is used in cosmetics, tattoo inks and aquarium water treatment. It is used as a pigment and as an adsorbent for removing lead from aquatic media. It acts as a catalyst for proteomics research. It is involved in the removal of toxic selenate and selenite ions from water systems.
- 6.3 Usage
- 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.
- 6.4 Storage Conditions
- ?Method 1: ferrous sulfate oxidation reaction of sulfuric acid and iron filings to produce ferrous sulfate, adding sodium hydroxide and oxidation into the air to prepare nuclei, and then in the nucleus suspension plus ferrous sulfate and iron, heating drum into the air Oxidation, filter press, rinse, dry, crushed to obtain iron oxide yellow. its
Fe + H2SO4 → FeSO4 + H2 ↑
FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4
4Fe (OH) 2 + O2 → 4FeOOH + 2H2O
H2SO4 + Fe + 7H2O → FeSO4 · 7H2O + H2 ↑
FeSO4 · 7H2O + O2 → 2Fe2O3 · H2O ↓ + 4H2SO4 + 2H2O Reaction conditions: 74 g iron filings were added to 1000 ml of 15% sulfuric acid until the iron scraps disappeared to produce ferrous sulphate at a concentration of about 200 g / L. To the ferrous sulfate solution prepared above, sufficient 30% sodium hydroxide was added, and 40% of the iron was converted into ferrous hydroxide [Fe (OH) 2] by stirring continuously. , Fe oxidation to Fe to form nuclei. Then, 90 g / L of iron scrap was added to produce 7 g / L of nuclei and 40 g / L of ferrous sulfate. The mixture was heated to 85 ° C and air-oxidized at 600 L / h for 64 h, then filtered and washed , Dry, crushed to obtain water-containing iron oxide yellow.
Method 2: Aromatic nitro-oxide method can produce aromatic amino compounds at the same time. The reaction equation is as follows:
Fe + H2O + R-NO2 → Fe2O3 · H2O + R-NH2
The reaction conditions were as follows: 560 parts of water, 36.5 parts of 32% hydrochloric acid, 160 parts of iron powder and 10 parts of aluminum powder were added to the reaction vessel. The reaction vessel was charged with 1660 parts of an aqueous solution containing 253 parts of 5-nitro-naphthalene sulfonic acid and 8-nitronaphthalene sulfonic acid at a pH of 6 and a temperature of 80 to 85C. The reaction temperature was 95 ~ 100 ℃ and the pH value was 6 ~ 6.5. Under these conditions, the reaction was carried out for 2 hours, 8 parts of 25% ammonia water was added, the reaction was further carried out for 4 hours, filtered, washed with 560 parts of water three times, The cake was mixed with 1000 parts of water, heated at 95-100 DEG C, 45 parts of 32% hydrochloric acid was added, stirred for 2 hours, filtered, washed with water until acid free, dried to obtain 160 parts of iron oxide yellow pigment, , Yield 96%.
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7. Computational chemical data
- Molecular Weight: 106.86702g/mol
- Molecular Formula: Fe(OH)3
- Compound Is Canonicalized: True
- XLogP3-AA: null
- Exact Mass: 88.932590
- Monoisotopic Mass: 88.932590
- Complexity: 10.3
- Rotatable Bond Count: 0
- Hydrogen Bond Donor Count: 1
- Hydrogen Bond Acceptor Count: 2
- Topological Polar Surface Area: 37.3
- Heavy Atom Count: 3
- Defined Atom Stereocenter Count: 0
- Undefined Atom Stereocenter Count: 0
- Defined Bond Stereocenter Count: 0
- Undefined Bond Stereocenter Count: 0
- Isotope Atom Count: 0
- Covalently-Bonded Unit Count: 1
- CACTVS Substructure Key Fingerprint: AAADcQAAMAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
8. Question & Answer
-
2Fe(OH)3 + 3H2SO4➡️Fe2(SO4)3 + 6H2O Molar mass of Fe(OH)3 = 106.85 g/mol Mole Fe(OH)3 = 100 g/106.85 g/mol = 0.936 mol Molar mass of H2SO4 = 98 g/mol Mole H2SO4 = 100 g/98 g/mol = 1.02 mol From bala..
-
Fe(OH)3 is iron(III) hydroxide, which is a form of iron hydroxide and is different from anhydrous iron(III) oxide (which is Fe2O3) and hydrated iron(III) oxide (which is Fe2O3·nH2O, where n, in this ..
-
Knowing Ks=6?10?38Ks=6?10?38 for Fe(OH)X3Fe(OH)X3 in neutral solutions, calculate the minimum pH of an acidic solution in order to completely dissolve 10 mg10 mg of Fe(OH)X3Fe(OH)X3 . Data: V=0.1 LV=..
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The following example in Skoog's Analytical Chemistry uses mass-balance and charge-balance equations to calculate the solubility of iron(III) hydroxide in aqueous solution. Fe(OH)X3(s)????FeX3+(aq)+3..
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