E 172

E 172  is chemical compounds composed of iron and oxygen. 
E 172  is used as iron ores, pigments, catalysts, and in thermite, and occur in hemoglobin. 
E 172 are important pigments, coming in a variety of colors (black, red, yellow). 

CAS Number : 1345-25-1
EC  Number : 215-721-8
Molecular Formula : FeO
Molecular Weight  : 71.84

Several E 172  are recognized. 
All are black magnetic solids. 
Often they are non-stoichiometric. 
Oxyhydroxides are a related class of compounds, perhaps the best known of which is rust.

E 172  and oxyhydroxides are widespread in nature and play an important role in many geological and biological processes. 
E 172  is inexpensive and durable pigments in paints, coatings and colored concretes. 
Colors commonly available are in the "earthy" end of the yellow/orange/red/brown/black range. 
When used as a food coloring, it has E number E172.

Uses of E 172
Almost all iron ores are oxides, so in that sense these materials are important precursors to iron metal and its many alloys.
E 172 are important pigments, coming in a variety of colors (black, red, yellow). 
Among their many advantages, they are inexpensive, strongly colored, and nontoxic.
Magnetite is a component of magnetic recording tapes.

Applications of E 172

Pigment 
- Used in the paint and coatings industry as well as plastics and wood plastic composites. 
This micronised pigment has excellent dispersibility as well as stability in high energy mixing processes and at high temperatures.

Thermite and iron smelting 
- E 172 can be mixed with aluminium powder to create small iron castings or welds, regularly used for joining rail tracks together.

Polishing 
- This E 172 powder is also know as 'jeweller's rouge' or simply rouge and is used for polishing glass and metallic jewellry.

Our range of E 172 -based pigments is designed for use in construction, coatings, inks and plastics, cosmetics and pharmaceutical applications.
E 172 is an important biological agent that has a key role in medical processes; however, the mechanism whereby E 172 provides iron for human and animal cells and its biological uses remains unclear.

E 172 is widespread in nature and play an important role in many geological and biological processes.
E 172 is used as iron ores, cosmetic pigments, tattoo inks, catalysts, and in thermite, and occur in hemoglobin. 
E 172 is inexpensive and durable pigments in paints, coatings and colored concretes.

Uses of E 172 
Almost all E 172 are oxides, so in that sense these materials are important precursors to iron metal and its many alloys.
E 172's are important pigments, coming in a variety of colors (black, red, yellow). 
Among their many advantages, they are inexpensive, strongly colored, and nontoxic.
Magnetite is a component of magnetic recording tapes.

Examples of food and drink products that sometimes include E172:
-salmon pastes
-shrimp pastes
-meat pastes
-cake and dessert packets
-soups

Industry Uses of E 172 
-Agricultural chemicals (non-pesticidal)
-Engineered fill for construction
-Graveling and road bed material.
-Intermediates
-Process regulators
-Smelter feedstock production
-incorporation as aggregate into concrete

Consumer Uses of E 172 
-Agricultural products (non-pesticidal)
-Building/construction materials not covered elsewhere
-Metal products not covered elsewhere

Household Products of E 172 
Household & Commercial/Institutional Products
Information on 25 consumer products that contain C.I. Iron Oxides in the following categories is provided:
-Personal Care
-Pesticides

E 172 is inexpensive and durable pigments in paints, coatings and colored concretes. 
Colors commonly available are in the "earthy" end of the yellow/orange/red/brown/black range. 
When used as a food coloring, it has E number E172.

Applications of E 172 :
-Cosmetics
-Pharmaceuticals
-Soaps
-Mortar
-Cement

E 172  Used :
-In paint production and coloring
-in making ceramics
-In the production of rubber parquet and floors
-In the production of linings
-In the art of stone painting
-Coloring of concrete
-In the paper production industry

Properties of E 172 :
-Bright-colored exquisite powder.
-Good weatherability (Lightfastness, heat-resistant and alkali resistant)
-Strong tinting power, excellent coverage and fine dispersion.
-We can supply iron oxide with different color, specifications and packing
-Only dissolved in heat strong acid.

E 172  Uses:
-Used for dyeing construction materials, such as Asphalt,  mosaic bricks, for concrete bricks, pavement, colorful tiles, roofing tiles and man-made marble, Colors for ceramic body.
-Colored fertilizer granules.
-Used in paper industry, esp. rice paper.
-Used for surface coloration of plastic epoxy floor, color for pitch.
-Used as a more fade-resistant dye for plastics.
-Pigment for Cosmetic, 
-Used in many types of paints, including anti-rust paint, water-soluble indoor/outdoor paints and oil-based paints.

E 172 are common natural compounds and can also easily be synthesized in the laboratory. 
There are 16 E 172, including oxides, hydroxides, and oxide-hydroxides. 
These minerals are a result of aqueous reactions under various redox and pH conditions. 
They have the basic composition of Fe, O, and/or OH, but differ in the valency of iron and overall crystal structure. 
Some of the important E 172 are goethite, akaganeite, lepidocrocite, magnetite, and hematite.

E 172 nanoparticles gain increasing attention due to their broad industrial use. 
However, safety concerns exist since their effects on human cells are still under investigation. 
The presence of iron oxide nanoparticles in the food pigment E172 has been shown recently. 

E 172 Red is an inorganic, high-purity pigment. 
Particle size range 0.3-1.0 micrometer. 
Mean particle size 0.56 micrometer. 
Provides superior color purity and saturation. 
Outstanding dispersibility, no aggregate formation.

E 172 are among the most frequently used ingredients in color cosmetics. 
They aid in creating a spectrum of warm colors and skin tone shades. 
Although common, not all E 172 are created equal.

E 172 occurs in nature very abundantly and is widely distributed. 
E 172 is a chemical complex which occurs naturally comprising iron and oxygen. 
E 172 is vital to humans and useful in most geological and biological activities. 
This E 172 may be required for investigations of its own particular properties or used as starting materials for other processes.

Physical Properties of E 172
Odour    : Odourless
Appearance    : Red-brown solid
Covalently-Bonded Unit    : 5
Hydrogen Bond Donor    : 3
Oxidation state            : +3
Solubility            : Insoluble in water, soluble in strong acid

Uses of E 172
The ordinary black E 172 has been used in both copperplate and dye stamping inks.
E 172 constitute the main component of products in the pharmaceutical industry, paint industry, plastic industry, ink industry and cosmetic industry.
Used as a pigment of natural origin including titanium dioxide.
Its salt is used as a flocculant in wastewater treatment the dyeing of textiles and the production of fertilizer and feed additives.
Used as a polishing material in the jewellery trade.

E 172  is encountered in the laboratory as a black powder. 
E 172 exhibits permanent magnetism and is ferrimagnetic, but is sometimes incorrectly described as ferromagnetic. 
Its most extensive use is as a black pigment which is synthesised rather than being extracted from the naturally occurring mineral as the particle size and shape can be varied by the method of production.

E 172 has a unique supermagnetic property with an easy separation method when applied as suspension in solutions and applications in biomedical, agricultural and environmental sectors. 

First-aid measures of E 172 

Eye Contact :
Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. 
Get medical attention.

Skin Contact :
Wash off immediately with plenty of water for at least 15 minutes. 
Get medical attention immediately if symptoms occur.

Inhalation :
Remove from exposure, lie down. 
Remove to fresh air. 
If breathing is difficult, give oxygen.
If not breathing, give artificial respiration. 
Get medical attention.

Ingestion :
Do NOT induce vomiting. 
Get medical attention.

Substance identity

EC / List no.: 215-721-8
CAS no.: 1345-25-1
Mol. formula: FeO

Hazard classification & labelling of E 172 
According to the notifications provided by companies to ECHA in REACH registrations no hazards have been classified.

About E 172 
E 172  is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 to < 1 000 tonnes per annum.
E 172  is used by professional workers (widespread uses), at industrial sites and in manufacturing.

Consumer Uses of E 172 
ECHA has no public registered data indicating whether or in which chemical products the substance might be used. 
ECHA has no public registered data on the routes by which E 172  is most likely to be released to the environment.

Article service life of E 172 
ECHA has no public registered data on the routes by which E 172  is most likely to be released to the environment. 
ECHA has no public registered data indicating whether or into which articles the substance might have been processed.

Widespread uses by professional workers of E 172 
ECHA has no public registered data indicating whether or in which chemical products the substance might be used. 
E 172  is used in the following areas: formulation of mixtures and/or re-packaging and building & construction work.
Release to the environment of E 172  can occur from industrial use: formulation of mixtures.
Other release to the environment of E 172  is likely to occur from: outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).

Formulation or re-packing of E 172 
ECHA has no public registered data indicating whether or in which chemical products the substance might be used. 
ECHA has no public registered data on the routes by whichE 172  is most likely to be released to the environment.

Uses at industrial sites of E 172 
E 172  is used in the following products: pH regulators and water treatment products and metals.
E 172  has an industrial use resulting in manufacture of another substance (use of intermediates).
E 172  is used in the following areas: building & construction work.
E 172  is used for the manufacture of: chemicals and metals.
Release to the environment of E 172  can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid, manufacturing of the substance and in the production of articles.

Manufacture of E 172 
Release to the environment of E 172  can occur from industrial use: manufacturing of the substance and in the production of articles.

Synonyms:
Iron(II) oxide
FERROUS OXIDE
oxoiron
1345-25-1
Iron monooxide
Iron monoxide
Iron(ii)oxide
Wustite
Natural wuestite
Iron oxide (FeO)
Eisenoxydul
iron-oxygen
HSDB 464
Eisen(II)-oxid
Iron(2) oxide
EINECS 215-721-8
iron(2+) oxide
CI 77489
Iron(II) oxide, CP
C.I. 77489
EC 215-721-8
Iron(2+);oxygen(2-)
CHEBI:50820
MFCD00016095
AKOS015913785
17125-56-3
Q196680
Iron(II) oxide, -10 mesh, 99.8% trace metals basis
Iron oxide
Iron oxide
iron oxide
Iron oxide (FeO)
Iron oxide (FeO)
Eisenmonoxid
iron (II) oxide
Iron Oxide
Iron oxide
iron oxide
Iron oxide
oxoiron
iron oxide
1345-25-1