Calcium 40 Carbonate (Calcium-40) is a stable (non-radioactive) isotope of Calcium. See below table for ENSDF Citation and Half Life. It is both naturally occurring and produced by fission. Calcium 40 Carbonate is one of over 250 stable isotopes produced by American Elements for biological and biomedical labeling, as target materials and other applications.
Calcium Carbonate 40 isotopic material is generally immediately available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.