Iron hydroxide oxide

CAS Number
20344-49-4
EC Number
243-746-4
E Number
E172

What is Iron hydroxide oxide?

Iron hydroxide oxide (CAS 20344-49-4), also known as ferric oxyhydroxide, is an inorganic iron compound used primarily as a coagulant and flocculant in industrial water and wastewater treatment.

Where is Iron hydroxide oxide used?

  • Municipal and industrial water treatment: removal of arsenic and lead
  • Effluent and drinking water: removal of heavy metal contaminants
  • Mining: treatment of acid mine drainage by precipitating dissolved metals
  • Pulp and paper mills: effluent treatment to reduce colour, turbidity and chemical oxygen demand
  • Corrosion inhibition: stable iron oxide barrier layer on metal surfaces
  • It binds suspended solids, heavy metals and phosphates, enabling their removal from process streams.

Good to know: Particle size and surface area specifications may vary by supplier and directly affect adsorption performance and chemical efficiency.

Other Names (Synonyms)

Ferric oxyhydroxide|Ferric hydroxide oxide|IRON HYDROXIDE OXIDE (FEO(OH))|5Fe2O3.9H2O|87PZU03K0K|FERRIC OXYHYDROXIDE (FEO2H)|FERRIC HYDROXIDE OXIDE (FEOOH)|Iron hydroxide oxide (Fe(OH)O)

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What are the physical properties of Iron hydroxide oxide?

Melting Point 135°C
Density 4.27 g/cm³
Appearance reddish-brown crystalline solid
Color Red-brown
Form crystalline
Water Solubility Soluble in mineral acids. Insoluble in water and ethanol.

Which trade and regulatory codes apply to Iron hydroxide oxide?

Storage Class 11 - Combustible Solids
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