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Ferric oxide

Physical Properties Occurrence and Uses Preparation Reactions
Ferric oxide
Ferric oxide structure
Chemical Name:
Ferric oxide
supra;ochre;deanox;raddle;rubigo;ferrugo;ironred;marsred;CI 77015;11554red
Molecular Formula:
Formula Weight:
MOL File:

Ferric oxide Properties

Melting point:
Flash point:
>230 °F
storage temp. 
It is soluble In Warm Hydrochloric Acid, Slightly Soluble in Sulfuric Acid.
Specific Gravity
Water Solubility 
CAS DataBase Reference
1309-37-1(CAS DataBase Reference)
NIST Chemistry Reference
Iron(iii) oxide(1309-37-1)
EPA Substance Registry System
Iron oxide (Fe2O3)(1309-37-1)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi,F
Risk Statements  36/37/38-11
Safety Statements  26-16
WGK Germany  -
RTECS  NO7400000
HS Code  28211000
Hazardous Substances Data 1309-37-1(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P370+P378 In case of fire: Use … for extinction.
P403+P235 Store in a well-ventilated place. Keep cool.

Ferric oxide price More Price(67)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 12342 Iron(III) oxide purified, ≥95% 1309-37-1 1kg $61.9 2018-11-13 Buy
Sigma-Aldrich 12342 Iron(III) oxide purified, ≥95% 1309-37-1 6x1kg $272 2018-11-13 Buy
Alfa Aesar 010716 Iron(III) oxide, Puratronic?, 99.998% (metals basis) 1309-37-1 25g $138 2018-11-16 Buy
Alfa Aesar 010716 Iron(III) oxide, Puratronic?, 99.998% (metals basis) 1309-37-1 100g $414 2018-11-16 Buy
Strem Chemicals 26-2705 Iron oxide nanoparticles in water, 10nm, with carboxylic acid surface functional group 1309-37-1 50mg $1119 2018-11-15 Buy

Ferric oxide Chemical Properties,Uses,Production

Physical Properties

Reddish-brown hexagonal crystal; refractive index 2.91; density 5.25g/cm3; Moh’s hardness 6.0; melts at 1565°C; insoluble in water; dissolves in acids.

Occurrence and Uses

Iron(III) oxide occurs in nature as the mineral hematite. It is the principal ore of iron from which the metal and its alloys are produced. Also, this oxide occurs in the mineral, limonite, 2Fe2O3•3H2O. An important application of this compound involves producing red, orange, and yellow pigments. Other applications are in coatings for metals, steel and rubber; in ceramics; and as a catalyst for oxidation reactions.


Iron(III) oxide is prepared as a reddish-brown hydrated precipitate by treating an aqueous solution of an iron(III) salt with caustic soda:
2FeCl3 + 6NaOH → Fe2O3•3H2O + 6NaCl
It also is obtained by thermal decomposition of iron(II) sulfate or the brown oxide hydroxide:
2FeSO4 → Fe2O3 + SO2 + SO3
2FeO(OH) → Fe2O3 + H2O
The oxide is prepared in industrial scale by first precipitating iron(II) hydroxide Fe(OH)2 by treating aqueous solutions of iron(II) sulfate and caustic soda. The Fe(OH)2 is then oxidized to iron(III) hydroxide by aeration. The latter is dehydrated by heating:
Fe2+ (aq) + OH¯ (aq) → Fe(OH)2(s) → 2Fe(OH)3 → Fe2O3 + 3H2O
It also is produced by ignition of iron(III) oxalate and iron carbonyls:
2Fe2(C2O4)3 +3O2 → 2Fe2O3 + 12CO


Iron(III) oxide decomposes to its elements when heated at elevated temperatures:
2Fe2O3 → 4Fe + 3O2
The oxide is reduced by most reducing agents. Reaction with carbon monoxide at elevated temperatures (that occurs in the blast furnace) gives metallic iron. The overall reaction is mildly exothermic (ΔHrxn –113.4 kcal/mol):
2 Fe2O3 + 6CO → 4Fe + 6CO2
It also is reduced by powdered aluminum at elevated temperatures, forming aluminum oxide and metallic iron:
Fe2O3 + 2Al → Al2O3 + 2Fe
The reaction is highly exothermic and becomes self-sustaining after ignition.
When heated with sand in an electric furnace, iron(III) oxide forms ferrosilicon alloy. When heated in a vacuum at 1,000°C, it forms triiron tetroxide, Fe3O4.

Chemical Properties

red to reddish-brown powder

Chemical Properties

Hematite is a noncombustible, black to black red or brick-red mineral (iron ore) composed mainly of ferric oxide, Fe2O3. Ferric oxide


Ferric Oxide is a nutrient and dietary supplement that is a source of iron.


A high-grade red pigment used as a polishing agent for glass, jewelry, etc. (2) A cosmetic prepared from dried flowers of the saf- flower.


As pigment for rubber, paints, paper, linoleum, ceramics, glass; in paint for ironwork, ship hulls; as polishing agent for glass, precious metals, diamonds; in electrical resistors and semiconductors; in magnets, magnetic tapes; as catalyst; colloidal solutions as stain for polysaccharides.


A black solid prepared by passing either steam or carbon dioxide over redhot iron. It may also be prepared by passing steam over heated iron(II) sulfide. Triiron tetroxide occurs in nature as the mineral magnetite. It is insoluble in water but will dissolve in acids to give a mixture of iron(II) and iron(III) salts in the ratio 1:2. Generally it is chemically unreactive; it is, however, a fairly good conductor of electricity.


Pneumoconiosis. Questionable carcinogen.

Potential Exposure

Hematite; as an iron ore composed mainly of ferric oxide, is a major source of iron and is used as a pigment for rubber, paints, paper, linoleum, ceramics, dental restoratives; and as a polishing agent for glass and pre cious metals. It is also used in electrical resistors, semiconduc tors, magnets, and as a catalyst. Human exposure to hematite from underground hematite mining is principally through inhalation and/or ingestion of dusts. No estimates are available concerning the number of underground miners exposed.

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, includ ing resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medi cal attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.


Contact with hydrogen peroxide, ethyl ene oxide, calcium hypochlorite will cause explosion. Violent reaction with powdered aluminum; hydrazine, hydrogen trisulfide.

Ferric oxide Preparation Products And Raw materials

Raw materials

Preparation Products

Ferric oxide Suppliers

Global( 224)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22043 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20786 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20243 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038 CHINA 3624 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40395 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30291 84
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 China 14615 55
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44187 61

View Lastest Price from Ferric oxide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-05-24 Iron oxide blue
US $200.00 / KG 25KG 99.99% 50tons/month China Chemical Lab

Ferric oxide Spectrum

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