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Iron(III) Hydroxide (Ferric Hydroxide)

Iron (III) hydroxide, Ferric hydroxide (Fe(OH)₃), is frequently used as an adsorbent to remove various heavy metals (i.e., arsenic and chromium) from contaminated soil and water.
Ferric hydroxide granular is available in two phases Fe(OH₃) and ß-FeOOH.
Please note: Ferric hydroxide slurry is not a stocked product; 2 – 3 weeks lead time is necessary for production. The slurry will discolor over time and separate since Ferric hydroxide is not soluble in water and must be mixed very well before use.
Slurry Typical Chemical Properties

Formula = Fe(OH)₃
‍Assay = ~13% (Min: 12.5%, Max: 13.5%)
‍Appearance = Chocolate brown
‍Free Acid = 0.00%
‍Iron = ~6.81% (Min: 6.54%, Max: 7.07%)

Typical Applications

Ferric hydroxide is used as a water purification treatment to remove arsenic and other heavy metals from contaminated sources. It can be used in wastewater, drinking water treatment, and mineral and table water production. It can also treat natural water and roof and street runoff water.

Industrial uses include manufacturing pigments, including rubber pigments, as a catalyst, and in nuclear waste irradiation.

Packaging Options

Jars, pails, drums, multi-ply paper bags, bulk bags, and fiberboard containers.


Ferric Hydroxide SCA (SARA Title III) Status: Listed. For further information, please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) At 202-564-2902

Ferric Hydroxide ß-FeOOH and Fe(OH₃) Granular CAS Number: 51274-00-1
Ferric Hydroxide Slurry CAS Number: 1309-37-1

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  • Ferric Hydroxide, Granular- Fe(OH₃)
  • Ferric Hydroxide, Granular- ß-FeOOH
  • Ferric Hydroxide, Slurry- 13%


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