Record Information
Version1.0
Creation Date2016-07-13 19:50:08 UTC
Update Date2020-03-11 21:24:10 UTC
LmdbLMDB00450
Secondary Accession NumbersNone
Metabolite Identification
Common NameBarium
DescriptionBarium is a dense alkaline earth metal that occurs in nature as a divalent cation in combination with other elements. Physiologically, it exists as an ion in the body. In addition to its natural presence in the Earth's crust, and therefore its natural occurrence in most surface waters, barium is also released to the environment via industrial emissions. The residence time of barium in the atmosphere may be up to several days. Barium sulfate exists as a white orthorhombic powder or crystals. Barite, the mineral from which barium sulfate is produced, is a moderately soft crystalline white opaque to transparent mineral. The most important impurities are iron(III) oxide, aluminium oxide, silica, and strontium sulfate.Barium sulfate has a low toxicity and relatively high density of about 4.5 g∑cm-3 (and thus opacity to X-rays). For this reason it is used as a radiocontrast agent in X-ray imaging of the digestive system ("barium meals" and "barium enemas"). Lithopone, a pigment that contains barium sulfate and zinc sulfide, is a permanent white that has good covering power, and does not darken when exposed to sulfides. (Wikipedia). Barium hydroxide is strongly alkaline and therefore corrosive. Barium nitrate caused mild skin irritation and severe eye irritation in rabbits. The lack of reports of skin or eye irritation in animals, despite its widespread use, suggests that barium sulfate, often used as a contrast medium, is not a strong irritant. Useful information on the sensitization potential of barium compounds was not identified. Oral intake from drinking water and food is the most prevalent route of exposure to barium compounds for the general population. For the occupational environment, data from industry in the United Kingdom and predictions made using the Estimation and Assessment of Substance Exposure (EASE) model suggest that exposures can be controlled to less than 10 mg/m3 8 hours time weighted average (total inhalable dust). In some situations, control will be to levels significantly below this value. Short term exposures may be higher than 10 mg/m3 for some tasks.The critical end points in animals for toxicity resulting from exposure to barium and barium compounds appear to be hypertension and renal function. Using a no observed adverse effect level (NOAEL) in animals of 0.21 mg barium/kg body weight per day, a tolerable intake value of 0.02 mg/kg body weight per day for barium and barium compounds has been developed in this document.Dissolved barium in aquatic environments may represent a risk to aquatic organisms such as daphnids, but it is apparently of lesser risk to fish and aquatic plants, although data are limited. No adverse effects have been reported in ecological assessments of terrestrial plants or wildlife, although some plants are known to bioaccumulate barium from the soil.(Concise international chemical assessment document 33; http://www.inchem.org/documents/cicads/cicads/cicad33.htm).
Structure
Thumb
Synonyms
ValueSource
Ba(2+)ChEBI
Ba2+ChEBI
BARIUM ionChEBI
Barium(2+)Kegg
BaHMDB
BariumChEBI
Chemical FormulaBa
Average Molecular Weight137.327
Monoisotopic Molecular Weight137.905241273
IUPAC Namebarium(2+) ion
Traditional Namebarium(2+) ion
CAS Registry Number7440-39-3
SMILES
[Ba++]
InChI Identifier
InChI=1S/Ba/q+2
InChI KeyXDFCIPNJCBUZJN-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of inorganic compounds known as homogeneous alkaline earth metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a alkaline earth metal atom.
KingdomInorganic compounds
Super ClassHomogeneous metal compounds
ClassHomogeneous alkaline earth metal compounds
Sub ClassNot Available
Direct ParentHomogeneous alkaline earth metal compounds
Alternative ParentsNot Available
Substituents
  • Homogeneous alkaline earth metal
Molecular FrameworkNot Available
External Descriptors
Ontology
StatusDetected and Quantified
OriginNot Available
BiofunctionNot Available
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP-0.2ChemAxon
Physiological Charge2ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity0 m³·mol⁻¹ChemAxon
Polarizability1.78 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
SpectraNot Available
Biological Properties
Cellular LocationsNot Available
Biofluid Locations and Tissue Locations
  • Ruminal Fluid
  • Serum
Concentrations
BiofluidStatusValueConditionSpeciesReferenceDetails
Ruminal FluidDetected and Quantified0.58 +/- 0.019 uMNot AvailableBovine
    • Saleem F, Bouatra...
details
SerumDetected and Quantified0.92 +/- 0.3 uMNot AvailableOvine
    • Candidate serum m...
details
SerumDetected but not QuantifiedNot ApplicableNot AvailableBovine details
DrugBank IDNot Available
HMDB IDHMDB0004142
FooDB IDFDB003764
Phenol Explorer IDNot Available
KNApSAcK IDC00016417
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkBarium
Chemspider ID94609
ChEBI ID37136
PubChem Compound ID104810
Kegg Compound IDC13881
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available