Radium-226 (T3D0100)

IdentificationTaxonomyBiological PropertiesPhysical PropertiesToxicity ProfileSpectraConcentrationsLinksReferencesGene RegulationTargets (1)XML
Targets (1)
Record Information
Version2.0
Creation Date2009-03-06 18:58:05 UTC
Update Date2014-12-24 20:21:06 UTC
Accession NumberT3D0100
Identification
Common NameRadium-226
ClassSmall Molecule
DescriptionRadium is a radioactive chemical element which has the symbol Ra and atomic number 88. Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. Radium is an alkaline earth metal that is formed when uranium and thorium break down in the environment. It is extremely radioactive. Radium-226 is the most stable isotope, has a half-life of 1602 years, and decays into radon gas. Radium has been used as a radiation source for treating cancer, in radiography of metals, and combined with other metals as a neutron source for research and radiation instrument calibration. Until the 1960s, radium was a component of the luminous paints used for watch and clock dials, instrument panels in airplanes, military instruments, and compasses. (2, 3)
Compound Type
  • Industrial/Workplace Toxin
  • Inorganic Compound
  • Metal
  • Natural Compound
  • Pollutant
  • Radioactive
  • Radioactive Isotope
  • Radium Compound
Chemical Structure
Thumb
MOLSDFPDBSMILESInChI
Synonyms
Synonym
226Ra
88Ra
Radium
Radium 226
Radium, isotope of mass 226
Chemical FormulaRa
Average Molecular Mass226.025 g/mol
Monoisotopic Mass226.025 g/mol
CAS Registry Number13982-63-3
IUPAC Name(²²⁶Ra)radium
Traditional Name(²²⁶Ra)radium
SMILES[226Ra]
InChI IdentifierInChI=1S/Ra/i1+0
InChI KeyInChIKey=HCWPIIXVSYCSAN-IGMARMGPSA-N
Chemical Taxonomy
ClassificationNot classified
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceIts appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. (2)
Experimental Properties
PropertyValue
Melting Point973°K (700°C , 1292°F )
Boiling Point1737 °C
SolubilityNot Available
LogPNot Available
Predicted Properties
PropertyValueSource
logP0ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity0 m³·mol⁻¹ChemAxon
Polarizability1.78 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
SpectraNot Available
Toxicity Profile
Route of ExposureInhalation (2) ; injection (2) ; oral (2) ; dermal (2)
Mechanism of ToxicityIonizing radiation produced by radium damages the DNA, resulting in gene mutations and chromosomal aberrations. This can both initiate and promote carcinogenesis, and interfere with reproduction and development. Since radium`s similarity to calcium allows it to deposit in the bones, bone cancer is of particular risk. (3)
MetabolismDue to its radioactivity, radium can affect the body following ingestion, inhalation, or dermal exposure. If inhalated, it may accumulate in the lungs. Once in the body radium may deposit in the bones, mainly on the surface and areas where new bone is being formed. Radium is not metabolized and is excreted primarily in the faeces. (3)
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)1, carcinogenic to humans. (1)
Uses/SourcesRadium has been used as a radiation source for treating cancer, in radiography of metals, and combined with other metals as a neutron source for research and radiation instrument calibration. Until the 1960s, radium was a component of the luminous paints used for watch and clock dials, instrument panels in airplanes, military instruments, and compasses. (3)
Minimum Risk LevelNot Available
Health EffectsRadium is highly radioactive and its decay product, radon gas, is also radioactive. It has been shown to cause effects on the blood (anemia) and eyes (cataracts). Inhalation, injection, ingestion or body exposure to radium can cause cancer and other disorders, due to its radioactivity. Since radium is chemically similar to calcium, it has the potential to cause great harm by replacing it in bones, and bone cancer is of particular risk. (2, 3)
SymptomsExposure to high doses of ionizing radiation results in acute radiation syndrome, which can cause skin burns, hair loss, nausea, vomiting, dizziness, disorientation, low blood pressure, headache, fatigue, weakness, fever, birth defects, illness, infection, and death. (4, 5)
TreatmentTreatment reversing the effects of irradiation is currently not possible. Anaesthetics and antiemetics are administered to counter the symptoms of exposure, as well as antibiotics for countering secondary infections due to the resulting immune system deficiency. (5)
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDNot Available
HMDB IDNot Available
PubChem Compound ID6328144
ChEMBL IDNot Available
ChemSpider IDNot Available
KEGG IDNot Available
UniProt IDNot Available
OMIM ID
ChEBI ID33325
BioCyc IDNot Available
CTD IDD011883
Stitch IDRadium-226
PDB IDNot Available
ACToR ID6526
Wikipedia LinkRadium
References
Synthesis ReferenceNot Available
MSDST3D0100.pdf
General References
  1. International Agency for Research on Cancer (2014). IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. [Link]
  2. Wikipedia. Radium. Last Updated 24 June 2009. [Link]
  3. ATSDR - Agency for Toxic Substances and Disease Registry (1990). Toxicological profile for radium. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). [Link]
  4. ATSDR - Agency for Toxic Substances and Disease Registry (1999). Toxicological profile for ionizing radiation. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). [Link]
  5. Wikipedia. Radiation poisoning. Last Updated 22 August 2009. [Link]
Gene Regulation
Up-Regulated GenesNot Available
Down-Regulated GenesNot Available

Targets

1. DNA
General Function:
Used for biological information storage.
Specific Function:
DNA contains the instructions needed for an organism to develop, survive and reproduce.
Molecular Weight:
2.15 x 1012 Da
References
  1. ATSDR - Agency for Toxic Substances and Disease Registry (1990). Toxicological profile for radium. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). [Link]