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CAS NUMBER: 12227-89-3
EC NUMBER: 235-442-5
MOLECULAR FORMULA: Fe3O4
MOLECULAR WEIGHT: 231.54
DESCRIPTION:
Iron oxide black as featured comes as a reliable colorant choice for assorted industries.
The highly opaque chemical boasts good dispersion for easy handling.
The inorganic pigment will cater to your different manufacturing needs.
Iron oxide black is used as a source of Fe in ceramic applications, particularly in glazing where price and its black raw color are important.
Iron oxide black provides the color in glaze after being fired at high temperatures.
High purity, low heavy metal content grades are available.
Iron oxide black products have 98% or more Fe3O4.
Iron oxide black is also used as a colorant for a wide range of non-ceramic products.
Some Iron oxide blacks are widely used in the cosmetic field.
They are considered to be nontoxic, moisture resistant, and nonbleeding.
Iron oxide blacks graded safe for cosmetic use are produced synthetically in order to avoid the inclusion of impurities normally found in naturally occurring iron oxides.
Iron oxide black is also used for corrosion resistance purposes.
Iron oxide black is also used in anti-corrosion paints (used in many bridges, and Eiffel tower).
Iron oxide blacks are used as contrast agent in Magnetic Resonance Imaging, to shorten proton relaxation times, (T1, T2 and T2).
The super paramagnetic contrast agents are composed of a water insoluble crystalline magnetic core, usually magnetite (Fe3O4).
The mean core diameter ranges from 4 to 10 nm.
Iron oxide black is often surrounded by a layer of dextrin or starch derivatives.
The total size of the particle is expressed as the mean hydrated particle diameter.
Iron oxide black used in ceramics is generally this synthetic form (the natural equivalent mineral magnetite contains 5-15% impurities).
Iron oxide black is much more expensive than the natural finely ground material (-200 mesh) but if there are good reasons for its use and percentages in the product recipe are low enough the cost may be justified.
Iron oxide black is used as a source of Fe (in preference to red iron) where its black raw color and its better distribution properties are needed.
Iron oxide black is the chemical compound with formula Fe3O4.
Iron oxide black occurs in nature as the mineral magnetite.
Iron oxide black is one of a number of iron oxides, the others being iron(II) oxide (FeO), which is rare, and iron(III) oxide (Fe2O3) which also occurs naturally as the mineral hematite.
Iron oxide black contains both Fe2+ and Fe3+ ions and is sometimes formulated as FeO ∙ Fe2O3.
Iron oxide black is encountered in the laboratory as a black powder.
Iron oxide black is synthesized rather than being extracted from the naturally occurring mineral as the particle size and shape can be varied by the method of production.
USES:
-concrete
-roofing tile
-paver
-stucco
-masonry
-paint
-coatings
-rubber
-plastic
-paper
-leather industries.
PROPERTIES:
-High opacity with strong tinting strength
-Good dispersion for easy handling
-Great light fastness and weather resistance
-Reliable choice of inorganic colorants
-Well-packaged
PREPARATION:
A more efficient method of preparing magnetite without troublesome residues of sodium, is to use ammonia to promote chemical co-precipitation from the iron chlorides: first mix solutions of 0.1 M FeCl3·6H2O and FeCl2·4H2O with vigorous stirring at about 2000 rpm.
The molar ratio of the FeCl3:FeCl2 should be about 2:1.
Heat the mix to 70 °C, then raise the speed of stirring to about 7500 rpm and quickly add a solution of NH4OH (10 volume %).
A dark precipitate of nanoparticles of magnetite forms immediately.
STRUCTURE:
Iron oxide black has a cubic inverse spinel group structure which consists of a cubic close packed array of oxide ions where all of the Fe2+ ions occupy half of the octahedral sites and the Fe3+ are split evenly across the remaining octahedral sites and the tetrahedral sites.
Both FeO and γ-Fe2O3 have a similar cubic close packed array of oxide ions and this accounts for the ready interchangeability between the three compounds on oxidation and reduction as these reactions entail a relatively small change to the overall structure.
Iron oxide black samples can be non-stoichiometric.
The ferrimagnetism of Iron oxide black arises because the electron spins of the FeII and FeIII ions in the octahedral sites are coupled and the spins of the FeIII ions in the tetrahedral sites are coupled but anti-parallel to the former.
The net effect is that the magnetic contributions of both sets are not balanced and there is a permanent magnetism.
In the molten state, experimentally constrained models show that the iron ions are coordinated to 5 oxygen ions on average.
There is a distribution of coordination sites in the liquid state, with the majority of both FeII and FeIII being 5-coordinated to oxygen and minority populations of both 4- and 6-fold coordinated iron.
PROPERTIES:
Iron oxide black is ferrimagnetic with a Curie temperature of 858 K (585 °C).
There is a phase transition at 120 K (−153 °C), called Verwey transition where there is a discontinuity in the structure, conductivity and magnetic properties.
This effect has been extensively investigated and whilst various explanations have been proposed, it does not appear to be fully understood.
While Iron oxide black has much higher electrical resistivity than iron metal (96.1 nΩ m), Fe3O4's electrical resistivity (0.3 mΩ m ) is significantly lower than that of Fe2O3 (approx kΩ m).
This is ascribed to electron exchange between the FeII and FeIII centres in Fe3O4.
USES:
Iron oxide black is used as a black pigment and is known as C.I pigment black 11 or Mars Black.
Iron oxide black is used as a catalyst in the Haber process and in the water-gas shift reaction.
The latter uses an HTS (high temperature shift catalyst) of iron oxide stabilised by chromium oxide.
This iron–chrome catalyst is reduced at reactor start up to generate Fe3O4 from α-Fe2O3 and Cr2O3 to CrO3.
Aside from its colour, Iron oxide black provides excellent protection against harmful UV radiation that even conventional sunscreens may not have.
When applied to skincare, they offer a beautiful hue that can make the product more aesthetically attractive and soften the appearance of blemishes on the skin.
Iron oxide black also reduces the white cast that many mineral formulae can leave behind.
APPLICATION:
Iron oxide blacks provide cosmetics with a specific colour, and it can range from pink to black.
This pigment can be used by itself in bodycare applications or to deepen the tone of other colours in various applications.
Iron oxide black can be used for tinting cosmetics such as foundations, blushes, eyeshadows, eye liners as well as to colour soaps.
Iron oxide black has been proven to be stable in soaps and will not change shape or colour in cold process or melt and pour soaps.
-Concealer
-Exfoliator
-Eyeliner
-Eyeshadow
-Foundation
-Lashes liner
-Loose powder
-Peel-off Mask
HOW TO USE IRON OXIDE BLACK:
For melt and pour soap, Iron oxide black should first ideally be mixed thoroughly with glycerine to get rid of speckling and can then simply be added to the melt and pour soap.
Also, you should shake all products containing this powder properly to ensure the colour is well-mixed.
One of the drawbacks though is that it tends to clump and you will need to be especially careful to de-clump first before adding to your recipe.
To de-clump beforehand, use a hand mixer to pre-mix your pigment in with a deodorised fixed oil, such as sweet almond oil or olive oil, before adding to your soap.
This will help disperse and break up any clumps.
The coloured oil can then be added to the soap batter at trace when making cold process soap.
DEFINITION:
Iron oxide black is a natural iron oxide magnet, hence the name, giving it a very nice distinguishing characteristic.
Iron oxide black is the most magnetic of all the minerals on Earth.
Iron oxide black is a member of the spinel group which has the standard formula A(B)2O4.
The A and B represent different metal ions that occupy specific sites in the crystal structure.
In the case of Iron oxide black is Fe +2 and the B metal is Fe +3; two different metal ions in two specific sites.
This arrangement causes a transfer of electrons between the different irons in a structured path or vector.
This electric vector generates a magnetic field.
Iron oxide black occurs in crystals of the cubic system, in masses, and as a loose sand.
Iron oxide black is one of the important ores of iron (magnetic iron ore) and is a common constituent of igneous and metamorphic rocks.
Iron oxide blacks are inorganic pigments that are available in three basic shades - black, red and yellow.
As they do not contain mica, oxides have a less vibrant colour with a matte appearance.
Iron oxide blacks colours are popular for soap making, bath bombs, make-up and other decorative applications.
Although Iron oxide blacks occur naturally, only synthetic iron oxides may be used in makeup and personal care applications.
Iron oxide black is a fine powdered pigment.
Iron oxide blacks are graded safe for cosmetic use and are produced synthetically in order to avoid the inclusion of impurities normally found in naturally occurring iron oxides including ferrous or ferric oxides, arsenic, lead and other poisonous substances.
Iron oxide black is an opaque, permanent black pigment with neutral undertones.
Iron oxide black is a manufactured pigment from Germany and is suitable for use with all media including oil and water based paints, pastels, chalks, crayons, limewash, plaster, mortar and grout.
Iron oxide black is the deepest black.
Iron oxide black can be used in cold process to create black soaps, and it can be used in bath bombs to create true black.
Iron oxide black (FeO) is one of the most common colorants in pottery, and it is widely used because it can produce a variety of colors.
As a glaze component, Iron oxide black can create varied effects depending on the conditions.
Iron oxide black is the reduced form of red iron oxide.
In this reduced form, Iron oxide black acts as a flux, meaning that it it promotes the formation of glass within the glaze.
Iron oxide black is a inorganic Pigment of fine particle size and great tinctorial strength, Excellent light fastness, resistance to alkali, non-toxic and non-inflammable & produces very attractive shades of variegated colours.
Iron oxide black is a commonly used pigment for art and industrial paints.
Also Iron oxide black is used in cosmetics such as Eye Mascara, Eye lashes, Eye liners, Nail polishes, Lipsticks, and black depilatory waxes.
Iron oxide black is also used as a colorant for a wide range of non-ceramic products.Some iron oxide pigments are widely used in the cosmetic field.
They are considered to be nontoxic, moisture resistant, and nonbleeding.
Iron oxide blacks graded safe for cosmetic use are produced synthetically in order to avoid the inclusion of impurities normally found in naturally occurring iron oxides.
Iron oxide black or magnetite is also used for corrosion resistance purposes.
Iron oxide black is also used in anti-corrosion paints.
Iron oxide black is used as a source of Fe in ceramic applications, particularly in glazing where price and its black raw color are important.
Iron oxide black provide the color in glaze after being fired at high temperatures.
CHEMICAL IDENTIFIER:
-Linear Formula: Fe3O4
-MDL Number: MFCD00011010
-EC No.: 215-277-5
-Pubchem CID: 16211978
PHYSICAL PROPERTIES:
-Lumps, pieces, targets, granules and various powder/ particle granulations down to as small as 15 to 20 nanometers.
-Standard low micron APS (d50) granulations are typically available at 10 microns, 18 microns and 63 microns.
GENERAL USES:
Iron oxide black is an important ore of iron.
Iron oxide black's perfect crystals are also famous among mineral collectors.
This mineral is of scientific interest because of its special magnetic properties.
Iron oxide black application and uses include:
-Magnetic Paint, Pigments & Ink
-Automotive, Brakes & Friction
-Dense Media Separation
-Agriculture, Fertilizer & Micronutrients
-Magnetic Fluids
-Power plant emission control
-Foundries, Castings & Molds
-Water & Waste water treatment
-Heavyweight Concrete
-Radiation Shielding & Heat Retention
-Building & Construction
SYNONYM:
Iron Oxide Black
Iron(II,III)oxide
12227-89-3
oxoiron;oxo(oxoferriooxy)iron
120899-48-1
Fe3O4
C.I. Pigment Black 11
Iron(II,III) oxide, CP
EINECS 235-442-5
Iron(II,III) oxide, powder, <5 mum, 95%
Iron(II,III) oxide, 99.99% trace metals basis
Q411235
Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size, 5 mg/mL in H2O
Iron(II,III) oxide, nanopowder, 50-100 nm particle size (SEM), 97% trace metals basis
