Curium
Grundinformationen
- CAS
22541-42-0- Standard-SMILES
[Cm]- InChIKey
NIWWFAAXEMMFMS-UHFFFAOYSA-N- Summenformel
- Cm
- Durchschnittliche Molmasse
- 247,0704 g/mol
- Monoisotopische Masse
- 247,07035
Überblick
Curium atom is an actinoid atom and a f-block element atom.
Namen und Bezeichner
- Bevorzugter Name
- Curium
- IUPAC
- curium
- Englischer Name
- curium
- Summenformel
- Cm
- Molmasse
- 247
Namen und Synonyme
CURIUM7440-51-9M5LL84MZ2WCMDTXSID80225390RefChem:128893DTXCID80147881curium atomCurium, ion(Cm3 )UNII-M5LL84MZ2WcurioCurium element
Weitere Namen anzeigen
Element CuriumElement:CuriumAtomic CuriumCurium IonElement-CmElement:CmCurium (atomic)Curium (element)
Datenbank-Bezeichner
- CAS
22541-42-0、7440-51-9- PubChem CID
- 23979
- DTXSID
DTXSID80225390- ChEBI
CHEBI:33390- UNII
- M5LL84MZ2W
- Nikkaji
- J95.988J
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 0 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 0
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 1
- Formalladung
- 0
- Komplexität
- 0
Experimentelle und physikochemische Eigenschaften
Chemical ClassesPhysical/Radiation -> Radionuclides
SpringerMaterials Propertiesnuclear state
Physical DescriptionA man-made radioactive metal with a melting point of 1345 degrees C; Known isotopes have mass numbers of 238-251; Cm-247 is the isotope with the longest half life; [Merck Index # 2675]
Physikochemische Eigenschaften
- Schmelzpunkt
- 1345 ° · 1345°
- Siedepunkt
- 3110 ° · bp (calc) 3110°
- Dichte
- 13.51 · 13.51; d 12.9
- Aggregatzustand
- silvery metal
- Farbe
- silvery metal; hexagonal, hexane or cubic
- EPA chemische Informationen
- Curium (7440-51-9)
Sicherheit und Regulatorisches
Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
Gefahrenhinweise
Hazards Summary
Most Important Radionuclide: Cu-244 Source: Nuclear reactors Half-Life: 18 years Effective Half-Life: 16.7 years Specific Activity: 82 Ci/g Decay Mode: Alpha GI Absorption: 0.05% Lung Clearance Half-Time: Weeks (10-100 days) for all compounds; Critical Organ: Liver Internal Toxicity: Very High Annual Limit on Intake: 0.000001 mCi Average Radiation Energy (MeV): Alpha 5.8; Beta 0.086; Gamma 0.0017; [Argonne] [See Glossary for references.] See Radiation, ionizing.
Chemie und Industrie
Pharmakologische Informationen
Biological Half-LifeBiological half-life: 20 years (liver) and 50 years (bone); [ANL Radiological Fact Sheets]
Verwendung und Herstellung
Uses
Cm-242 and Cm-244 are used to power batteries for space and medical devices; Cm-248 is used in research accelerators to produce other elements; [Merck Index #2675] Curium is produced from plutonium and americium by neutron capture in nuclear reactors. Six of the curium isotopes have half-lives longer than 20 years and are defined as transuranic wastes (TRU) produced in nuclear reactors. [Argonne]
Anwendungen
OccurrenceThere is no natural curium on Earth. All of its isotopes are man-made and artificiallyproduced through nuclear reactions with other elements. The curium isotope Cm-242 wasfirst produced by bombarding plutonium-239 with helium nuclei (alpha particles), whichcontributed neutrons that changed 94Pu to 96Cm.
VerwendenThere are no major commercial uses for curium because of the extremely small amountproduced. In the future, the most important use of curium may be to provide the power forsmall, compact thermoelectric sources of electricity, by generating heat through the nucleardecay of radioisotope curium-241. These small, efficient power sources can be used in individualhomes or remote regions to provide electricity to areas that cannot secure it from othersources. It could also be used as a source of electricity in spacecraft. However, today curium’smain use is for basic scientific laboratory research.
Anbieter1 Anbieter
Productos Quimicos Roda[email protected]
Ergänzende Hinweise
Zugehörige Reaktionen
0
Keine Reaktionsaufzeichnungen unter den aktuellen Filterkriterien.
Notizen zur Verbindung
Wird geladen…