Agent Name

Berkelium

CAS Number

7440-40-6

Formula

Bk

Major Category

Physical/Radiation

Category

Radionuclides

Description

A man-made radioactive metal with a melting point of 986 degrees C; Known isotopes have mass numbers of 240 and 242-251; Bk-247 is the isotope with the longest half life; [Merck Index # 1158]

Sources/Uses

Bk-247 is one of the transuranic wastes (TRU) produced in nuclear reactors by neutron capture. [Argonne]

Comments

Most Important Radionuclide: Bk-247 Source: Nuclear reactors or particle accelerators; Half-Life: 1,400 years Specific Activity (mCi/gm): 1.1 Decay Mode: Alpha Internal Toxicity: Very High Annual Limit on Intake: 0.0000009 mCi Average Radiation Energy (MeV): Alpha 5.6; Beta 0.061; Gamma 0.11; [Argonne] [See Glossary for references.] See "Radiation, ionizing."

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