7440-40-6 Usage
Uses
1. Used in Nuclear Research and High Energy Physics:
Berkelium is used as a research material for studying nuclear reactions and high energy physics. Its unique properties and radioactive nature make it valuable in understanding the behavior of transuranic elements and their isotopes.
2. Used in Radioisotope Production:
Berkelium is used as a precursor in the production of other radioisotopes, which are essential for various applications, including medical imaging, cancer treatment, and industrial radiography.
3. Used in Safe Handling Procedures Development:
Due to its high radioactivity, berkelium is used in the development of safe handling procedures for radioactive materials. This is crucial for the safe application of berkelium and other radioactive elements in various fields.
4. Used in Predicting Decay Modes and Half-lives:
Berkelium is used in the study of decay modes and half-lives of undiscovered isotopes. Its unique properties and behavior contribute to the development of new systematics for predicting the characteristics of these isotopes.
5. Used in Crystallography and Material Science:
Berkelium's unique crystal structure and properties make it an interesting subject for research in crystallography and material science. Understanding its structure can lead to the development of new materials with specific properties and applications.
History
Berkelium [CAS: 7440-40-6], the atomic number is 97 and the chemical symbol is Bk. The name is derived from Berkeley, the town in California where the element was first synthesized in 1949 by the American scientific team Stanley G. Thompson, Albert Ghiorso, and Glenn T. Seaborg at the University of California, Berkeley, CA., using the nuclear reaction 241Am(4He, 2n) 243Bk. It is the eighth element in the Actinide series of the elements and was named in analogy with Terbium (for Ytterby the town in Sweden whose mine produced the ore), which is the eighth element in the Lanthanide series of the elements. The longest half-life associated with this unstable element is 1400 year 247Bk. See also Berkelium.
Check Digit Verification of cas no
The CAS Registry Mumber 7440-40-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7440-40:
(6*7)+(5*4)+(4*4)+(3*0)+(2*4)+(1*0)=86
86 % 10 = 6
So 7440-40-6 is a valid CAS Registry Number.
7440-40-6Relevant academic research and scientific papers
Kinetics of dissociation of trivalent actiniae chelates of TMDTA
Muscatello, Anthony C.,Choppin, Gregory R.,D'Olieslager, Willem
, p. 993 - 997 (2008/10/08)
Measurements by a radiotracer technique show that the dissociation of TMDTA (trimethylenediamine-N,N-tetraacetic acid) chelates with Am, Cm, Bk, Cf, and Eu proceeds through an acid-catalyzed pathway. The rates of dissociation of An(TMDTA)- are 2 orders of magnitude faster than those of the corresponding EDTA chelates, presumably due to the greater lability of the nitrogen atom in the six-membered nitrogen-metal-nitrogen ring of TMDTA chelates. The rate of dissociation also decreased with decreasing metal ion radius. A proton-catalyzed mechanism similar to that for dissociation of EDTA complexes of lanthanide and actinide cations is consistent with the rate data.
