phosphorus atom phosphorus-32 atom (32)15P (32)P 0 30.974 31.97391 CAS:14596-37-3 CHEBI:37972 InChI=1S/P/i1+1 KEGG:C19162 OAICVXFJPJFONN-OUBTZVSYSA-N P Phosphorus, isotope of mass 32 The radioactive isotope of phosphorus with relative atomic mass 31.973907 and half-life of 14.26 days. [32P] chebi.owl chebi_ontology obi.owl phosphorus, isotope of mass 32 phosphorus-32 phosphorus-32