| Radionuclide | Iodine-125 |
| Physical Half Life | 60 Days |
| Maximum Beta Energy | n/a |
| Range of Maximum Energy Beta Particle | n/a |
| Dose Rate at 1cm fro a 1mCi Beta Point Source | n/a |
| Most Prominent Gamma Photons | 27keV 31keV |
| Gamma Ray Exposure Rate at 1cm from a 1mCi Point Source | 1.4R/h |
| Annual Limit on Intake - ALI (oral)* | 0.02mCi |
| Type and Thickness of Shielding Recommended for mCi Amounts | lead 1/8 inch |
*ALI-intake of a given radionuclide which would result in a committed effective dose equivalent of 5 rems or a committed dose equivalent of 50 rems to an organ or tissue.
For further information concerning Iodine-125 contact William Fendt at WFendt@udel.edu or call 831-1434.
The Safety Beacon is distributed across the University to raise awareness about Environmental Health and Safety issues.
Questions regarding radioactive waste issues may be addressed to the Radiation Safety Officer or call 831-1434.