ChemicalBook >> CAS DataBase List >>Ferric oxide

Ferric oxide

CAS No.
1309-37-1
Chemical Name:
Ferric oxide
Synonyms
Diiron Trioxide;Pigment red 101;Red Ferric Oxide;supra;ochre;deanox;raddle;rubigo;ferrugo;ironred
CBNumber:
CB3115644
Molecular Formula:
Fe2O3
Lewis structure
fe2o3 lewis structure
Molecular Weight:
159.69
MDL Number:
MFCD00748135
MOL File:
1309-37-1.mol
MSDS File:
SDS
Last updated:2024-03-14 15:18:26

Ferric oxide Properties

Melting point 1538°C
Density 5.24
Flash point >230 °F
storage temp. 2-8°C
solubility It is soluble In Warm Hydrochloric Acid, Slightly Soluble in Sulfuric Acid.
form pieces
color black
Specific Gravity 5.1~5.2
PH 3.7±0.3
Water Solubility INSOLUBLE
Merck 14,4028
Exposure limits ACGIH: TWA 5 mg/m3
OSHA: TWA 10 mg/m3; TWA 15 mg/m3; TWA 5 mg/m3
NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3
Stability Stable.
CAS DataBase Reference 1309-37-1(CAS DataBase Reference)
FDA 21 CFR 186.1300; 73.1200; 73.200
Substances Added to Food (formerly EAFUS) FERRIC OXIDE
SCOGS (Select Committee on GRAS Substances) Ferric oxide
Ferric oxide (packaging)
EWG's Food Scores 1-2
FDA UNII 1K09F3G675
IARC 3 (Vol. 1, Sup 7) 1987
NIST Chemistry Reference Iron(iii) oxide(1309-37-1)
EPA Substance Registry System Ferric oxide (1309-37-1)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS02,GHS05
Signal word  Danger
Hazard statements  H225-H318
Precautionary statements  P210-P280-P305+P351+P338+P310
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26
WGK Germany  -
RTECS  NO7400000
TSCA  Yes
HS Code  28211000
IDLA 2,500 mg Fe/m3
NFPA 704
1
1 0

Ferric oxide price More Price(50)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Alfa Aesar 010716 Iron(III) oxide, Puratronic?, 99.998% (metals basis) 1309-37-1 25g $171 2023-06-20 Buy
Alfa Aesar 010716 Iron(III) oxide, Puratronic?, 99.998% (metals basis) 1309-37-1 100g $509 2023-06-20 Buy
Sigma-Aldrich 747335 Iron oxide(II,III) magnetic nanoparticles solution 1309-37-1 2ml $648 2024-03-01 Buy
Sigma-Aldrich 720712 Iron(III) oxide, dispersion nanoparticles, ≤110 nm particle size, 15 wt. % in ethanol 1309-37-1 100g $222 2024-03-01 Buy
Sigma-Aldrich 544884 Iron(III) oxide nanopowder, <50 nm particle size (BET) 1309-37-1 5g $44.9 2024-03-01 Buy
Product number Packaging Price Buy
010716 25g $171 Buy
010716 100g $509 Buy
747335 2ml $648 Buy
720712 100g $222 Buy
544884 5g $44.9 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.
red iron oxide powder

Occurrence and Uses

Ferric 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.

Preparation

Ferric 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

Reactions

Ferric 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.

Description

Iron oxides are produced synthetically and consist essentially of anhydrous and/or hydrated iron oxides. The range of hues includesyellows, reds, browns and blacks. Food quality iron oxides are primarily distinguished from technical grades by the comparatively low levels of contamination by other metals. This is achieved by the selection and control of the source of iron and/or by the extent of chemical purification during the manufacturing process. Iron oxides have been used to color confectionery, fillings and decorations for pastry products, cheese products, fish paste, pet foods, cosmetics and pharmaceutical products.

Chemical Properties

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

Occurrence

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.

Uses

Red iron oxide (Fe2O3) is an inorganic pigment of either natural or synthetic origin. It is a low chroma red with excellent durability and low cost. Synthetic pigment is made by heating iron sulfate with quicklime in a furnace. The second preparatory technique involves calcining iron sulfate in the presence of air at high temperatures. Natural and oxides of iron are mined either as the mineral hematite (Fe2O3) or as hematite in its hydrated form.

Uses

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.

Uses

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

Definition

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.

Preparation

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) + OHˉ (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
.

Definition

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.

Hazard

Pneumoconiosis. Questionable carcinogen.

Flammability and Explosibility

Non flammable

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 anycontact lenses at once and irri gate immediately for at least15 min, occasionally lifting upper and lower lids. Seek med-ical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, includ-ing resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. 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.Note to physician: For severepoisoning,do not useBAL .[British Anti-Lewisite, dimercaprol, dithiopropanol (C3HgOS2)] as it is contraindicated or ineffective in poisoningfrom iron.

Carcinogenicity

Welders are typically exposed to a complex mixture of dust and fume of metallic oxides, as well as irritant gases, and are subject to mixeddust pneumoconiosis with possible loss of pulmonary function; this should not be confused with benign pneumoconiosis caused by iron oxide.1 Although an increased incidence of lung cancer has been observed among hematite miners exposed to iron oxide, presumably owing to concomitant radon gas exposure, there is no evidence that iron oxide alone is carcinogenic to man or animals.6

storage

Color Code- Green: General storage may be used.Prior to working with this chemical you should be trainedonits proper handling and storage. Store in tightly closedcontainers in a cool, well-ventilatedarea. .Where possible,automatically transfer material from other storage contain-ers to process containers A regulated, marked area shouldbe established where this chemical is handled, used, orstored in compliance with OSHA Standard 1910.1045.

Properties and Applications

TEST ITEMS

SPECIFICATION

APPEARANCE

DARK RED POWDER

SHADE

CLOSE TO STANDARD

CONTENT OF Fe 2 O 3

96% min

pH VALUE

3-7

OIL ABSORPTION

15-25%

RESIDUE ON 320 MESH

0.3% max

WATER SOLUBLE

0.3% max

VOLATITE 105 °C

1.0% max

TINTING STRENGTH

98-102 %

Incompatibilities

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

Global( 437)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Dangtong Import and export Co LTD
+8615632927689 admin@hbdangtong.com China 998 58
Henan Bao Enluo International TradeCo.,LTD
+86-17331933971 +86-17331933971 deasea125996@gmail.com China 2504 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21700 55
Hangzhou FandaChem Co.,Ltd.
008657128800458; +8615858145714 fandachem@gmail.com China 9354 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038 zheyansh@163.com CHINA 3620 58
career henan chemical co
+86-0371-86658258 sales@coreychem.com China 29914 58
Hubei Jusheng Technology Co.,Ltd.
18871490254 linda@hubeijusheng.com CHINA 28180 58
Xiamen AmoyChem Co., Ltd
+86-592-6051114 +8618959220845 sales@amoychem.com China 6387 58
Hubei xin bonus chemical co. LTD
86-13657291602 linda@hubeijusheng.com CHINA 22968 58
Shandong chuangyingchemical Co., Ltd.
18853181302 sale@chuangyingchem.com CHINA 5909 58

Related articles

View Lastest Price from Ferric oxide manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Ferric oxide pictures 2024-03-29 Ferric oxide
1309-37-1
US $1835.00-1825.00 / metric tonnes 1metric tonnes 99% 1000tons Hebei Dangtong Import and export Co LTD
Ferric oxide pictures 2024-03-29 Ferric oxide
1309-37-1
US $50.00-30.00 / kg 1kg 99% 20Tons Hebei Dangtong Import and export Co LTD
Ferric oxide pictures 2023-12-26 Ferric oxide
1309-37-1
US $0.00-0.00 / kg 1kg 99% 500000kg Hebei Yibangte Import and Export Co. , Ltd.
  • Ferric oxide pictures
  • Ferric oxide
    1309-37-1
  • US $1835.00-1825.00 / metric tonnes
  • 99%
  • Hebei Dangtong Import and export Co LTD
  • Ferric oxide pictures
  • Ferric oxide
    1309-37-1
  • US $50.00-30.00 / kg
  • 99%
  • Hebei Dangtong Import and export Co LTD
  • Ferric oxide pictures
  • Ferric oxide
    1309-37-1
  • US $0.00-0.00 / kg
  • 99%
  • Hebei Yibangte Import and Export Co. , Ltd.
Ferric oxide(II,III), magnetic nanoparticles solution Ferric(III) oxide Iron(III) oxide, 99% trace metals basis Iron(III) oxide, 99.9% trace metals basis Iron(III) oxide, 98% trace metals basis Iron(III) oxide, 99.95% trace metals basis Iron(III) oxide, 99.99% trace metals basis Iron(lll) oxide Red iron trioxide Iron(III) oxide,powder Ferric Oxide Anhydrous Iron(III) oxide, Industrial Iron (III) oxide, alpha-phase Iron(III) oxide, cosmetic, Sold in collaboration with Nanophase Technologies Corporation Iron(III) oxide, magnetic syntheticironoxide venetianred vitriolred vogel’sironred yellowoxideofiron Iron Oxide Red Transparent 288 VN iron oxide,micaceous CI 77015 Lanthanum iron palladium oxide iron oxide,red,transparent C. I. Pigment Red 101 (77491) Feric oxide Iron(III) oxide, ^a-phase, 99% (metals basis) Iron(III) oxide, industrial, NanoArc|r Iron oxide nanoparticles, 10nM, organic solvent-dispersible (in chloroforM) Iron oxide nanoparticles in water, 30nM, with carboxylic acid surface functional group Iron oxide nanoparticles in water, 30nM, with aMine surface functional group Iron (III) oxide - calcined Iron oxide - precipitated Ironoxideanhydrous Ironoxideredbrownpowder PR101 RED IRON OXIDE TRANS IRON(III) OXIDE POWDER <5 MICRON 99+% Iron(III) oxide, sintered, pieces, 3-12mm, 99.8% metals basis Iron(III) oxide, 99.98% metals basis IRON(III) OXIDE GAMMA-FORM 99.9% IRON(III) OXIDE R. G. IRON(III) OXIDE, 99.998% Iron(III) oxide, 99.999% metals basis IRON(III) OXIDE, NANOPOWDER iron oxide red [monitions list (controlled chemicals)] Iron oxide, fume (as Fe) (also see metal) Ferric sesquioxide Iron (III) Oxide, red powder Unimin Ferrotint Red****OBSOLETE************* Iron(III) oxide, gamma, 99+% (metals basis) Iron (III) oxide, alpha, 99% (metals basis) Iron(III) oxide, Puratronic, 99.998% (metals basis) Ferric oxide for ferrite Ferric oxide,medicinal Iron(III) oxide >=99.995% trace metals basis Iron(III) oxide pieces, 3-12 mm, 99.8% trace metals basis Iron(III) oxide powder, <5 mum, >=99%