Phosphorus-33

P-33

 Half Life: 25.4 days

Radiation: beta

Max. Energy: 0.249 Mev (100%)

Range in Air: 46 cm

ALI: 3 mCi

DAC: 1E-6 uCi/mL
Hazard: The beta radiation from mCi quantities is not an external radiation hazard. However, ingestion or inhalation may result in an internal exposure.
Safety Precautions:
  • Follow General Precautions for working with radioactive material.
  • Dosimetry is not required when handling P-33.
  • Most research involving P-33 may be performed on a laboratory bench.
  • Shielding is not required for P-33.
  • Use GM detector with pancake probe or liquid scintillation detector to monitor for P-33.
  • Urinanalysis is required within 24 hours after working with 100 mCi or greater of P-33.
  • Dispose of radioactive waste in accordance with requirements in Appendix G of the Radiation Safety Manual.

H-3, C-14, S-35, P-32, I-125, Cr-51, Tc-99m, P-33

Radiation Safety