Iron hydroxide oxide Chemical Properties

Melting point:

135°C

Density 

3.4-3.9

RTECS 

NO7400000

solubility 

DMSO (Sparingly), Methanol (Slightly), Water (Soluble)

form 

crystalline

color 

Red-brown

Water Solubility 

Soluble in mineral acids. Insoluble in water and ethanol.

Merck 

14,4025

Exposure limits

ACGIH: TWA 1 mg/m3
NIOSH: TWA 1 mg/m3

Stability:

Stable.

CAS DataBase Reference

20344-49-4(CAS DataBase Reference)

NIST Chemistry Reference

iron(III) oxide hydroxide(20344-49-4)

EPA Substance Registry System

Iron hydroxide oxide (Fe(OH)O) (20344-49-4)

Safety Information

WGK Germany 

-

TSCA 

Yes

MSDS

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Iron hydroxide oxide Usage And Synthesis

Chemical Properties

reddish-brown crystalline solid

Uses

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.

Uses

In purifying water; as absorbent in chemical processing; as pigment; as catalyst.

Preparation

A cold solution of 810 g of Fe(NO3)3?9H2O in two liters of water is poured slowly, with vigorous stirring, into an ammonia solution prepared by dissolving 120 g of gaseous NH3 in two liters of water (cooling necessary). The hydroxide which precipitates is amorphous to x-ray analysis. It is washed by stirring at least five times with eight-liter portions of cold water, each portion being decanted as completely as possible. The residual slurry is then stirred with sufficient cone. KOH solution to give a mixture approximately 2N and allowed to stand for 3-4 hours. Finally 100℃ steam is bubbled through for two hours. The precipitate is thereby transformed completely into bright-yellow α-FeO(OH), which shows a crystalline x-ray diffraction pattern.

General Description

contains varying amounts of MgO₂, SiO₂, CaO, Al₂O₃

Iron hydroxide oxide (20344-49-4)Related Product Information

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