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Ferric Hydroxide (Ferric (III) Hydroxide) (Fe (OH)3) from READE PDF Print E-mail


  • Ferric Hydroxide Synonyms:

ferric(III) iron hydroxide, CAS# 1309-33-7 (Fe(OH), CAS# 20344-49-4 (FeO(OH)), iron hydroxide, iron(II) hydroxide, granular ferric hydroxide, ferric hydroxide slurry, liquid iron, granular iron hydroxide, iron hydroxide-coated sand, ferric hydroxide, iron oxides, iron hydroxide oxide, hydrated ferric oxide, iron hydroxide, diiron trioxide hydrate, iron hydroxide (Fe(OH)3), iron hydroxide, (Fe(OH)3), iron hydroxide oxide (Fe(OH)O), iron hydroxide oxide (Fe(OH)O), EINECS 215-166-1, EINECS 234-346-0, EINECS 243-746-4, 1309-33-7, 11113-66-9, 135507-54-9, 20344-49-4, 8063-99-8,

  • Ferric Hydroxide Designations:

Chemical Name: Ferric(III) hydroxide, iron hydroxide

Chemical Formula: Fe (OH)3

  • Ferric Hydroxide Description:

a) Ferric(III) hydroxide is a granular, powder or slurry product

b) Iron(II) hydroxide or ferrous hydroxide is a compound produced when iron(II) ions, from a compound such as iron(II) sulfate react with hydroxide ions. Iron(II) hydroxide itself is practically white, but even traces of oxygen impart it with a greenish tinge. If the solution was not deoxygenated and the iron reduced, the precipitate can vary in color starting from green to reddish brown depending on the iron(III) content.

c) This precipitate is also known as "green rust" in the crystal lattice of which Fe2+ ions are easily substituted by Fe3+ ions produced by its progressive oxidation. In the presence of oxygen the color changes quickly. Green rust is a powerful reducing agent and also a layer double hydroxides (LDH) capable to sorb anions because of the presence of positive electrical charges borne on its surface. The mineralogical form of green rust is a recently discovered fougerite. All forms of green rust (including fougerite) does not correspond the ideal Fe(OH)2 compound, as their structure is more complex and variable. The natural analogue of Fe(OH)2 compound is a very rare mineral amakinite, (Fe,Mg)(OH)2.

  • Ferric Hydroxide Nominal Chemical Properties Available:        

a) Ferric hydroxide, slurry- 13%
        a) % Iron Assay: Min.= 12.5 and max.= 13.5
        b) % Iron: Min.: 6.54 and max.= 7.07
        c) Free Acid: 0.00%
        d) pH (10% solution): 5-9
        e) Brookfield Viscosity: 5,000 to 25,000 cps
        f) Typical Trace Analysis (all are 0.1% max.): Chlorides, Nitrates, Sulfates, Sodium, Manganese, Carbon, and Zinc 

b) Ferric hydroxide, granular
        a) Iron Content= 60%
        b) Free Acid: 0.00%
        c) pH (10% solution): 5-9
        d) Typical Trace Analysis (all are 0.1% max.): Chlorides, Nitrates, Sulfates, Sodium, Manganese, Carbon, and Zinc 

  • Ferric Hydroxide Physical Properties Available:

Granular, powder or slurry

  • Ferric Hydroxide Typical Applications:

a) Treatment of arsenic and other heavy metals

b) Ferrous hydroxide has also been investigated as an agent for the removal of toxic selenate and selenite ions from water systems such as wetlands. The ferrous hydroxide reduces these ions to elemental selenium, which is insoluble in water and precipitates out.

  • Ferric Hydroxide Packaging:

Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers. For further information on packaging options contact READE. 

  • Ferric Hydroxide TSCA (SARA Title III) Status:

Listed. For further information please call the E.P.A. at +1.202.554.1404

  • Ferric Hydroxide CAS Number:

a) CAS# 1309-33-7 (Fe (OH)3

b) CAS# 20344-49-4 (FeO(OH))

c) CAS# 18624-44-7 (FeH3O3)





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