Element Iron

Iron ElementIt is an element with atomic symbol Fe, atomic number 26, and atomic weight 55.85.
It is a metal, that belongs to the first transition series and group 8 of the periodic table. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. It is the fourth most common element in the Earth’s crust.
Element Iron is an essential heavy metal that is included in many over-the-counter multivitamin and mineral supplements and is used therapeutically in higher doses to treat or prevent iron deficiency anemia.
When taken at the usual recommended daily allowance or in replacement doses, iron has little or no adverse effect on the liver. In high doses and in intentional or accidental overdoses, iron causes serious toxicities, one component of which is acute liver damage.

Names and Identifiers

Chemical Formula:Fe
CAS:7439-89-6
Molecular Weight:55.84500 g/mol
EC Number :231-096-4
MDL Number:MFCD00010999
Color:lustrous, metallic, grayish tinge/ silvery-gray
Other Names:Ferrum, Fer, Eisen, Ferro, Hierro
PubChem CID:23925
IUPAC Name:Iron
Inchl:InChI=1S/Fe
InChI Key:XEEYBQQBJWHFJM-UHFFFAOYSA-N
Canonical SMILES:[Fe]
ICSC Number:n/a

Physical & Chemical Properties

Phase:Solid
Density:7.874 g/cm³
Boiling Point:3134 K ​(2862 °C, ​5182 °F)
Melting Point:1811 K ​(1538 °C, ​2800 °F)
Molecular Formula:Fe
Flash Point:>230 °F
Exact Mass:55.93490
Symbol:Globally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H228
Precautionary Statements:F:flammable
Hazard Codes:F:flammable
Risk Phrases:R11
Safety Phrases:S26-S16-S33
RIDADR:UN 3264 8/PG 3
WGK Germany:1
RTECS:NO4565500
Packaging Group:III
Hazard Class:8

Iron isotopes are mainly used in nutritional studies, with Fe-57 and Fe-58 being the two most commonly used Fe isotopes.
Studies have included iron-loss by human adolescents, conditions for effective iron absorption, interventions for anemia and genetic iron control. The Fe-54 isotope is used for the production of radioactive Fe-55 which in turn is used as an electron capture detector and in X-ray fluorescence.
Fe-56 can be used for the production of radioactive Co-55 which is used as a tumor seeking agent in bleomycin.

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
54Fe53.9396127 (15)5.845 (35)0
56Fe55.9349393 (16)91.754 (36)0
57Fe56.9353958 (16)2.119 (10)1/20.09062294
58Fe57.9332773 (16)0.282 (4)0

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
52Fe51.948128.28 hEC to 52Mn0
53Fe52.9453128.51 mEC to 53Mn7/2
55Fe54.9382982.73 yEC to 55Mn3/2
59Fe58.93488044.51 dβ to 59Co3/20.29
60Fe59.9340771.5 x 106 yβ to 60Co0
61Fe60.936756.0 mβ to 61Co
62Fe61.9367768 sβ to 62Co0

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