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DESCRIPTION

Basic Info

CAS No.	77-92-9
Formula	C6h8o7
EINECS	201-069-1
Colour	White, Green, Red, Black, Yellow, Blue, Brown, Orange, Violet
Appearance	Powder
Usage	Paint, Ceramic, Cosmetic, Plastic, Leather, Ink, Paper, Textile, Food
Application Material	Natural Silk
Type	Natural
Solubility	Solubility
Composition	Oxide
Yellow Pigments	Iron Oxide Yellow
Green Pigments	Chrome Oxide Green
Blue Pigments	Iron Blue
Transport Package	25/Drum
Origin	China
Production Capacity	10000metric Ton/Metric Tons Per Month

Product Description

Product Description

Product Description

Iron(III) oxide

Names
IUPAC nameIron(III) oxide
Other namesferric oxide, hematite, ferric iron, red iron oxide, rouge, maghemite, colcothar, iron sesquioxide, rust, ochre
Identifiers
CAS Number	1309-37-1
3D model (JSmol)	Interactive image
ChEBI	CHEBI:50819
ECHA InfoCard	100.013.790
EC Number	215-168-2
E number	E172(ii) (colours)
Gmelin Reference	11092
RTECS number	NO7400000
Properties
Chemical formula	Fe2O3
Molar mass	159.687 g·mol−1
Appearance	Red-brown solid
Odor	Odorless
Density	5.25 g/cm3
Melting point	1,539 °C (2,802 °F; 1,812 K) decomposes 105 °C (221 °F; 378 K) β-dihydrate, decomposes 150 °C (302 °F; 423 K) β-monohydrate, decomposes 50 °C (122 °F; 323 K) α-dihydrate, decomposes 92 °C (198 °F; 365 K) α-monohydrate, decomposes
Solubility in water	Insoluble
Solubility	Soluble in diluted acids,barely soluble in sugarsolution Trihydrate slightly soluble in aq. tartaric acid, citric acid, CH3COOH
Magnetic susceptibility (χ)	+3586.0·10−6 cm3/mol
Refractive index(D)	n1=2.91, n2=3.19 (α, hematite)
Structure
Crystal structure	Rhombohedral, hR30 (α-form) Cubic bixbyite, cI80 (β-form) Cubic spinel (γ-form) Orthorhombic (ε-form)
Space group	R3c, No. 161 (α-form) Ia3, No. 206 (β-form) Pna21, No. 33 (ε-form)
Point group	3m (α-form) 2/m 3 (β-form) mm2 (ε-form)
Coordination geometry	Octahedral (Fe3+, α-form, β-form)
Hazards
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H315, H319, H335
GHS precautionary statements	P261, P305+351+338
Threshold limit value (TLV)	5 mg/m3 (TWA)
Lethal dose or concentration (LD, LC):
LD50 (median dose)	10 g/kg (rats, oral)
Related compounds
Other anions	Iron(III) fluoride
Other cations	Manganese(III) oxide Cobalt(III) oxide
Related iron oxides	Iron(II) oxide Iron(II,III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe₂O₃. It is one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare; and iron(II,III) oxide (Fe₃O₄), which also occurs naturally as the mineral magnetite. As the mineral known as hematite, Fe₂O₃ is the main source of iron for the steel industry. Fe₂O₃ is readily attacked by acids. Iron(III) oxide is often called rust, and to some extent this label is useful, because rust shares several properties and has a similar composition; however, in chemistry, rust is considered an ill-defined material, described as Hydrous ferric oxide

Hydrated iron(III) oxides

Several hydrates of Iron(III) oxide exists. When alkali is added to solutions of soluble Fe(III) salts, a red-brown gelatinous precipitate forms. This is Fe(OH)₃, but Fe₂O₃·H₂O (also written as Fe(O)OH). Several forms of the hydrated oxide of Fe(III) exist as well. The red γ-Fe(O)OH, occurs on the outside of rusticles, and the orange , which occurs internally in rusticles. When Fe₂O₃·H₂O is heated, it loses its water of hydration. Further heating at 1670 K converts Fe₂O₃ to black Fe₃O₄ (Fe^IIFe^III₂O₄), which is known as the mineral . Fe(O)OH is soluble in acids, giving [Fe(H2O)6]3+. In concentrated aqueous alkali, Fe₂O₃ gives [Fe(OH)₆]³⁻.

Uses

Iron industry

The overwhelming application of iron(III) oxide is as the feedstock of the steel and iron industries, e.g. the production of iron, steel, and many alloys.

Polishing
A very fine powder of ferric oxide is known as "jeweler's rouge", "red rouge", or simply rouge. It is used to put the final polish on metallic jewelry and lenses, and historically as a cosmetic. Rouge cuts more slowly than some modern polishes, but is still used in optics fabrication and by jewelers for the superior finish it can produce. When polishing gold, the rouge slightly stains the gold, which contributes to the appearance of the finished piece. Rouge is sold as a powder, paste, laced on polishing cloths, or solid bar (with a wax or grease binder). Other polishing compounds are also often called "rouge", even when they do not contain iron oxide. Jewelers remove the residual rouge on jewelry by use of ultrasonic cleaning. Products sold as "stropping compound" are often applied to a leather strop to assist in getting a razor edge on knives, straight razors, or any other edged tool.

Pigment

Iron(III) oxide is also used as a pigment, under names "Pigment Brown 6", "Pigment Brown 7", and "Pigment Red 101". Some of them, e.g. Pigment Red 101 and Pigment Brown 6, are approved by the US Food and Drug Administration (FDA) for use in cosmetics. Iron oxides are used as pigments in dental composites alongside titanium oxides.

Hematite is the characteristic component of the Swedish paint color Falu red.

Magnetic recording

Iron(III) oxide was the most common magnetic particle used in all types of magnetic storage and recording media, including magnetic disks (for data storage) and magnetic tape (used in audio and video recording as well as data storage). Its use in computer disks was superseded by cobalt alloy, enabling thinner magnetic films with higher storage density.

Photocatalysis

α-Fe₂O₃ has been studied as a photoanode for solar water oxidation. However, its efficacy is limited by a short diffusion length (2-4 nm) of photo-excited charge carriers and subsequent fast recombination, requiring a large overpotential to drive the reaction.Research has been focused on improving the water oxidation performance of Fe₂O₃ using nanostructuring, surface functionalization, or by employing alternate crystal phases such as β-Fe₂O₃.

Medicine

Calamine lotion, used to treat mild itchiness, is chiefly composed of a combination of zinc oxide, acting as astringent, and about 0.5% iron(III) oxide, the product's active ingredient, acting as antipruritic. The red color of iron(III) oxide is also mainly responsible for the lotion's pink color.

Detailed Photos

Packaging & Shipping

1.Packing: 25kg/ carton or 25kg/bag, or per your requirement 5kgs net weight in PP woven or PE plastic bag about 20 tons for 20" container2.Storage: The resin should be stored in a drafty, dry warehouse and away from fire and direct sunlight. It should not be piled up in the open air.3.Transportation: During transportation, the product should not be exposed to strong sunlight or rain and should not be transported together with sand, soil,scrap metal, coal or glass. Transportation together with toxic, corrosive and flammable substance is strictly prohibited.

FAQ

1.
Q: Can I get some free samples?
A: Of course, we will send a sample to you.2.
Q: Can we use our own label?
A: Yes, you can. You can contact with the salesmen, please send an email to her/him and tell more details about the label.3.
Q: What's the payment term?
A: Usually we accept T/T, we also can accept L/C, etc.4.
Q: Will you be responsible for the goods when shipping?
A: Generally the logistics company we cooperate with can send the cargo to where you want. Besides, we promise that goods will be arranged as soon as possible and delivered in the shortest time.