###### Editorial Note on Part 173

#### Editorial Note:

Nomenclature changes to part 173 appear at 70 FR 56098, Sept. 23, 2005.

#### § 173.435 Table of A1 and A2 values for radionuclides.

The table of A1 and A2 values for radionuclides is as follows:

| Symbol ofradionuclide | Element andatomic number | A1 (TBq) | A1 (Ci)b | A2 (TBq) | A2 (Ci)b | Specific activity |
| --- | --- | --- | --- | --- | --- | --- |
| (TBq/g) | (Ci/g) |
| Ac-225 (a) | Actinium (89) | 8.0 × 10−1 | 2.2 × 101 | 6.0 × 10−3 | 1.6 × 10−1 | 2.1 × 103 | 5.8 × 104 |
| Ac-227 (a) | | 9.0 × 10−1 | 2.4 × 101 | 9.0 × 10−5 | 2.4 × 10−3 | 2.7 | 7.2 × 101 |
| Ac-228 | | 6.0 × 10−1 | 1.6 × 101 | 5.0 × 10−1 | 1.4 × 101 | 8.4 × 104 | 2.2 × 106 |
| Ag-105 | Silver (47) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 1.1 × 103 | 3.0 × 104 |
| Ag-108m (a) | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 9.7 × 10−1 | 2.6 × 101 |
| Ag-110m (a) | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.8 × 102 | 4.7 × 103 |
| Ag-111 | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 5.8 × 103 | 1.6 × 105 |
| Al-26 | Aluminum (13) | 1.0 × 10−1 | 2.7 | 1.0 × 10−1 | 2.7 | 7.0 × 10−4 | 1.9 × 10−2 |
| Am-241 | Americium (95) | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 1.3 × 10−1 | 3.4 |
| Am-242m (a) | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 3.6 × 10−1 | 1.0 × 101 |
| Am-243 (a) | | 5.0 | 1.4 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 7.4 × 10−3 | 2.0 × 10−1 |
| Ar-37 | Argon (18) | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 3.7 × 103 | 9.9 × 104 |
| Ar-39 | | 4.0 × 101 | 1.1 × 103 | 2.0 × 101 | 5.4 × 102 | 1.3 | 3.4 × 101 |
| Ar-41 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.5 × 106 | 4.2 × 107 |
| As-72 | Arsenic (33) | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 6.2 × 104 | 1.7 × 106 |
| As-73 | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 8.2 × 102 | 2.2 × 104 |
| As-74 | | 1.0 | 2.7 × 101 | 9.0 × 10−1 | 2.4 × 101 | 3.7 × 103 | 9.9 × 104 |
| As-76 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 5.8 × 104 | 1.6 × 106 |
| As-77 | | 2.0 × 101 | 5.4 × 102 | 7.0 × 10−1 | 1.9 × 101 | 3.9 × 104 | 1.0 × 106 |
| At-211 (a) | Astatine (85) | 2.0 × 101 | 5.4 × 102 | 5.0 × 10−1 | 1.4 × 101 | 7.6 × 104 | 2.1 × 106 |
| Au-193 | Gold (79) | 7.0 | 1.9 × 102 | 2.0 | 5.4 × 101 | 3.4 × 104 | 9.2 × 105 |
| Au-194 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 1.5 × 104 | 4.1 × 105 |
| Au-195 | | 1.0 × 101 | 2.7 × 102 | 6.0 | 1.6 × 102 | 1.4 × 102 | 3.7 × 103 |
| Au-198 | | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 9.0 × 103 | 2.4 × 105 |
| Au-199 | | 1.0 × 101 | 2.7 × 102 | 6.0 × 10−1 | 1.6 × 101 | 7.7 × 103 | 2.1 × 105 |
| Ba-131 (a) | Barium (56) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 3.1 × 103 | 8.4 × 104 |
| Ba-133 | | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 9.4 | 2.6 × 102 |
| Ba-133m | | 2.0 × 101 | 5.4 × 102 | 6.0 × 10−1 | 1.6 × 101 | 2.2 × 104 | 6.1 × 105 |
| Ba-140 (a) | | 5.0 × 10−1 | 1.4 × 101 | 3.0 × 10−1 | 8.1 | 2.7 × 103 | 7.3 × 104 |
| Be-7 | Beryllium (4) | 2.0 × 101 | 5.4 × 102 | 2.0 × 101 | 5.4 × 102 | 1.3 × 104 | 3.5 × 105 |
| Be-10 | | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−1 | 1.6 × 101 | 8.3 × 10−4 | 2.2 × 10−2 |
| Bi-205 | Bismuth (83) | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 1.5 × 103 | 4.2 × 104 |
| Bi-206 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 3.8 × 103 | 1.0 × 105 |
| Bi-207 | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 1.9 | 5.2 × 101 |
| Bi-210 | | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 4.6 × 103 | 1.2 × 105 |
| Bi-210m (a) | | 6.0 × 10−1 | 1.6 × 101 | 2.0 × 10−2 | 5.4 × 10−1 | 2.1 × 10−5 | 5.7 × 10−4 |
| Bi-212 (a) | | 7.0 × 10−1 | 1.9 × 101 | 6.0 × 10−1 | 1.6 × 101 | 5.4 × 105 | 1.5 × 107 |
| Bk-247 | Berkelium (97) | 8.0 | 2.2 × 102 | 8.0 × 10−4 | 2.2 × 10−2 | 3.8 × 10−2 | 1.0 |
| Bk-249 (a) | | 4.0 × 101 | 1.1 × 103 | 3.0 × 10−1 | 8.1 | 6.1 × 101 | 1.6 × 103 |
| Br-76 | Bromine (35) | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 9.4 × 104 | 2.5 × 106 |
| Br-77 | | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 2.6 × 104 | 7.1 × 105 |
| Br-82 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 104 | 1.1 × 106 |
| C-11 | Carbon (6) | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.1 × 107 | 8.4 × 108 |
| C-14 | | 4.0 × 101 | 1.1 × 103 | 3.0 | 8.1 × 101 | 1.6 × 10−1 | 4.5 |
| Ca-41 | Calcium (20) | Unlimited | Unlimited | Unlimited | Unlimited | 3.1 × 10−3 | 8.5 × 10−2 |
| Ca-45 | | 4.0 × 101 | 1.1 × 103 | 1.0 | 2.7 × 101 | 6.6 × 102 | 1.8 × 104 |
| Ca-47 (a) | | 3.0 | 8.1 × 101 | 3.0 × 10−1 | 8.1 | 2.3 × 104 | 6.1 × 105 |
| Cd-109 | Cadmium (48) | 3.0 × 101 | 8.1 × 102 | 2.0 | 5.4 × 101 | 9.6 × 101 | 2.6 × 103 |
| Cd-113m | | 4.0 × 101 | 1.1 × 103 | 5.0 × 10−1 | 1.4 × 101 | 8.3 | 2.2 × 102 |
| Cd-115 (a) | | 3.0 | 8.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.9 × 104 | 5.1 × 105 |
| Cd-115m | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 9.4 × 102 | 2.5 × 104 |
| Ce-139 | Cerium (58) | 7.0 | 1.9 × 102 | 2.0 | 5.4 × 101 | 2.5 × 102 | 6.8 × 103 |
| Ce-141 | | 2.0 × 101 | 5.4 × 102 | 6.0 × 10−1 | 1.6 × 101 | 1.1 × 103 | 2.8 × 104 |
| Ce-143 | | 9.0 × 10−1 | 2.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.5 × 104 | 6.6 × 105 |
| Ce-144 (a) | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 1.2 × 102 | 3.2 × 103 |
| Cf-248 | Californium (98) | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−3 | 1.6 × 10−1 | 5.8 × 101 | 1.6 × 103 |
| Cf-249 | | 3.0 | 8.1 × 101 | 8.0 × 10−4 | 2.2 × 10−2 | 1.5 × 10−1 | 4.1 |
| Cf-250 | | 2.0 × 101 | 5.4 × 102 | 2.0 × 10−3 | 5.4 × 10−2 | 4.0 | 1.1 × 102 |
| Cf-251 | | 7.0 | 1.9 × 102 | 7.0 × 10−4 | 1.9 × 10−2 | 5.9 × 10−2 | 1.6 |
| Cf-252 | | 1 × 10−1 | 2.7 | 3.0 × 10−3 | 8.1 × 10−2 | 2.0 × 101 | 5.4 × 102 |
| Cf-253 (a) | | 4.0 × 101 | 1.1 × 103 | 4.0 × 10−2 | 1.1 | 1.1 × 103 | 2.9 × 104 |
| Cf-254 | | 1.0 × 10−3 | 2.7 × 10−2 | 1.0 × 10−3 | 2.7 × 10−2 | 3.1 × 102 | 8.5 × 103 |
| Cl-36 | Chlorine (17) | 1.0 × 101 | 2.7 × 102 | 6.0 × 10−1 | 1.6 × 101 | 1.2 × 10−3 | 3.3 × 10−2 |
| Cl-38 | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 4.9 × 106 | 1.3 × 108 |
| Cm-240 | Curium (96) | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−2 | 5.4 × 10−1 | 7.5 × 102 | 2.0 × 104 |
| Cm-241 | | 2.0 | 5.4 × 101 | 1.0 | 2.7 × 101 | 6.1 × 102 | 1.7 × 104 |
| Cm-242 | | 4.0 × 101 | 1.1 × 103 | 1.0 × 10−2 | 2.7 × 10−1 | 1.2 × 102 | 3.3 × 103 |
| Cm-243 | | 9.0 | 2.4 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 1.9 | 5.2 × 101 |
| Cm-244 | | 2.0 × 101 | 5.4 × 102 | 2.0 × 10−3 | 5.4 × 10−2 | 3.0 | 8.1 × 101 |
| Cm-245 | | 9.0 | 2.4 × 102 | 9.0 × 10−4 | 2.4 × 10−2 | 6.4 × 10−3 | 1.7 × 10−1 |
| Cm-246 | | 9.0 | 2.4 × 102 | 9.0 × 10−4 | 2.4 × 10−2 | 1.1 × 10−2 | 3.1 × 10−1 |
| Cm-247 (a) | | 3.0 | 8.1 × 101 | 1.0 × 10−3 | 2.7 × 10−2 | 3.4 × 10−6 | 9.3 × 10−5 |
| Cm-248 | | 2.0 × 10−2 | 5.4 × 10−1 | 3.0 × 10−4 | 8.1 × 10−3 | 1.6 × 10−4 | 4.2 × 10−3 |
| Co-55 | Cobalt (27) | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 1.1 × 105 | 3.1 × 106 |
| Co-56 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.1 × 103 | 3.0 × 104 |
| Co-57 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 101 | 2.7 × 102 | 3.1 × 102 | 8.4 × 103 |
| Co-58 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 1.2 × 103 | 3.2 × 104 |
| Co-58m | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 2.2 × 105 | 5.9 × 106 |
| Co-60 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 4.2 × 101 | 1.1 × 103 |
| Cr-51 | Chromium (24) | 3.0 × 101 | 8.1 × 102 | 3.0 × 101 | 8.1 × 102 | 3.4 × 103 | 9.2 × 104 |
| Cs-129 | Cesium (55) | 4.0 | 1.1 × 102 | 4.0 | 1.1 × 102 | 2.8 × 104 | 7.6 × 105 |
| Cs-131 | | 3.0 × 101 | 8.1 × 102 | 3.0 × 101 | 8.1 × 102 | 3.8 × 103 | 1.0 × 105 |
| Cs-132 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 5.7 × 103 | 1.5 × 105 |
| Cs-134 | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 4.8 × 101 | 1.3 × 103 |
| Cs-134m | | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−1 | 1.6 × 101 | 3.0 × 105 | 8.0 × 106 |
| Cs-135 | | 4.0 × 101 | 1.1 × 103 | 1.0 | 2.7 × 101 | 4.3 × 10−5 | 1.2 × 10−3 |
| Cs-136 | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 2.7 × 103 | 7.3 × 104 |
| Cs-137 (a) | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.2 | 8.7 × 101 |
| Cu-64 | Copper (29) | 6.0 | 1.6 × 102 | 1.0 | 2.7 × 101 | 1.4 × 105 | 3.9 × 106 |
| Cu-67 | | 1.0 × 101 | 2.7 × 102 | 7.0 × 10−1 | 1.9 × 101 | 2.8 × 104 | 7.6 × 105 |
| Dy-159 | Dysprosium (66) | 2.0 × 101 | 5.4 × 102 | 2.0 × 101 | 5.4 × 102 | 2.1 × 102 | 5.7 × 103 |
| Dy-165 | | 9.0 × 10−1 | 2.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.0 × 105 | 8.2 × 106 |
| Dy-166 (a) | | 9.0 × 10−1 | 2.4 × 101 | 3.0 × 10−1 | 8.1 | 8.6 × 103 | 2.3 × 105 |
| Er-169 | Erbium (68) | 4.0 × 101 | 1.1 × 103 | 1.0 | 2.7 × 101 | 3.1 × 103 | 8.3 × 104 |
| Er-171 | | 8.0 × 10−1 | 2.2 × 101 | 5.0 × 10−1 | 1.4 × 101 | 9.0 × 104 | 2.4 × 106 |
| Eu-147 | Europium (63) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 1.4 × 103 | 3.7 × 104 |
| Eu-148 | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 6.0 × 102 | 1.6 × 104 |
| Eu-149 | | 2.0 × 101 | 5.4 × 102 | 2.0 × 101 | 5.4 × 102 | 3.5 × 102 | 9.4 × 103 |
| Eu-150 (short lived) | | 2.0 | 5.4 × 101 | 7.0 × 10−1 | 1.9 × 101 | 6.1 × 104 | 1.6 × 106 |
| Eu-150 (long lived) | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 6.1 × 104 | 1.6 × 106 |
| Eu-152 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 6.5 | 1.8 × 102 |
| Eu-152m | | 8.0 × 10−1 | 2.2 × 101 | 8.0 × 10−1 | 2.2 × 101 | 8.2 × 104 | 2.2 × 106 |
| Eu-154 | | 9.0 × 10−1 | 2.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 9.8 | 2.6 × 102 |
| Eu-155 | | 2.0 × 101 | 5.4 × 102 | 3.0 | 8.1 × 101 | 1.8 × 101 | 4.9 × 102 |
| Eu-156 | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 2.0 × 103 | 5.5 × 104 |
| F-18 | Fluorine (9) | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.5 × 106 | 9.5 × 107 |
| Fe-52 (a) | Iron (26) | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 2.7 × 105 | 7.3 × 106 |
| Fe-55 | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 8.8 × 101 | 2.4 × 103 |
| Fe-59 | | 9.0 × 10−1 | 2.4 × 101 | 9.0 × 10−1 | 2.4 × 101 | 1.8 × 103 | 5.0 × 104 |
| Fe-60 (a) | | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−1 | 5.4 | 7.4 × 10−4 | 2.0 × 10−2 |
| Ga-67 | Gallium (31) | 7.0 | 1.9 × 102 | 3.0 | 8.1 × 101 | 2.2 × 104 | 6.0 × 105 |
| Ga-68 | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 1.5 × 106 | 4.1 × 107 |
| Ga-72 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.1 × 105 | 3.1 × 106 |
| Gd-146 (a) | Gadolinium (64) | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 6.9 × 102 | 1.9 × 104 |
| Gd-148 | | 2.0 × 101 | 5.4 × 102 | 2.0 × 10−3 | 5.4 × 10−2 | 1.2 | 3.2 × 101 |
| Gd-153 | | 1.0 × 101 | 2.7 × 102 | 9.0 | 2.4 × 102 | 1.3 × 102 | 3.5 × 103 |
| Gd-159 | | 3.0 | 8.1 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.9 × 104 | 1.1 × 106 |
| Ge-68 (a) | Germanium (32) | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 2.6 × 102 | 7.1 × 103 |
| Ge-71 | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 5.8 × 103 | 1.6 × 105 |
| Ge-77 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.3 × 105 | 3.6 × 106 |
| Hf-172 (a) | Hafnium (72) | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 4.1 × 101 | 1.1 × 103 |
| Hf-175 | | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 3.9 × 102 | 1.1 × 104 |
| Hf-181 | | 2.0 | 5.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 6.3 × 102 | 1.7 × 104 |
| Hf-182 | | Unlimited | Unlimited | Unlimited | Unlimited | 8.1 × 10−6 | 2.2 × 10−4 |
| Hg-194 (a) | Mercury (80) | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 1.3 × 10−1 | 3.5 |
| Hg-195m (a) | | 3.0 | 8.1 × 101 | 7.0 × 10−1 | 1.9 × 101 | 1.5 × 104 | 4.0 × 105 |
| Hg-197 | | 2.0 × 101 | 5.4 × 102 | 1.0 × 101 | 2.7 × 102 | 9.2 × 103 | 2.5 × 105 |
| Hg-197m | | 1.0 × 101 | 2.7 × 102 | 4.0 × 10−1 | 1.1 × 101 | 2.5 × 104 | 6.7 × 105 |
| Hg-203 | | 5.0 | 1.4 × 102 | 1.0 | 2.7 × 101 | 5.1 × 102 | 1.4 × 104 |
| Ho-166 | Holmium (67) | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 2.6 × 104 | 7.0 × 105 |
| Ho-166m | | 6.0 × 10−1 | 1.6 × 101 | 5.0 × 10−1 | 1.4 × 101 | 6.6 × 10−2 | 1.8 |
| I-123 | Iodine (53) | 6.0 | 1.6 × 102 | 3.0 | 8.1 × 101 | 7.1 × 104 | 1.9 × 106 |
| I-124 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 9.3 × 103 | 2.5 × 105 |
| I-125 | | 2.0 × 101 | 5.4 × 102 | 3.0 | 8.1 × 101 | 6.4 × 102 | 1.7 × 104 |
| I-126 | | 2.0 | 5.4 × 101 | 1.0 | 2.7 × 101 | 2.9 × 103 | 8.0 × 104 |
| I-129 | | Unlimited | Unlimited | Unlimited | Unlimited | 6.5 × 10−6 | 1.8 × 10−4 |
| I-131 | | 3.0 | 8.1 × 101 | 7.0 × 10−1 | 1.9 × 101 | 4.6 × 103 | 1.2 × 105 |
| I-132 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 3.8 × 105 | 1.0 × 107 |
| I-133 | | 7.0 × 10−1 | 1.9 × 101 | 6.0 × 10−1 | 1.6 × 101 | 4.2 × 104 | 1.1 × 106 |
| I-134 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 9.9 × 105 | 2.7 × 107 |
| I-135 (a) | | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.3 × 105 | 3.5 × 106 |
| In-111 | Indium (49) | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 1.5 × 104 | 4.2 × 105 |
| In-113m | | 4.0 | 1.1 × 102 | 2.0 | 5.4 × 101 | 6.2 × 105 | 1.7 × 107 |
| In-114m (a) | | 1.0 × 101 | 2.7 × 102 | 5.0 × 10−1 | 1.4 × 101 | 8.6 × 102 | 2.3 × 104 |
| In-115m | | 7.0 | 1.9 × 102 | 1.0 | 2.7 × 101 | 2.2 × 105 | 6.1 × 106 |
| Ir-189 (a) | Iridium (77) | 1.0 × 101 | 2.7 × 102 | 1.0 × 101 | 2.7 × 102 | 1.9 × 103 | 5.2 × 104 |
| Ir-190 | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 2.3 × 103 | 6.2 × 104 |
| Ir-192 (c) | | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.4 × 102 | 9.2 × 103 |
| Ir-194 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 3.1 × 104 | 8.4 × 105 |
| K-40 | Potassium (19) | 9.0 × 10−1 | 2.4 × 101 | 9.0 × 10−1 | 2.4 × 101 | 2.4 × 10−7 | 6.4 × 10−6 |
| K-42 | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 2.2 × 105 | 6.0 × 106 |
| K-43 | | 7.0 × 10−1 | 1.9 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.2 × 105 | 3.3 × 106 |
| Kr-79 | Krypton (36) | 4.0 × 100 | 1.1 × 102 | 2.0 × 100 | 5.4 × 101 | 4.2 × 104 | 1.1 × 106 |
| Kr-81 | Krypton (36) | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 7.8 × 10−4 | 2.1 × 10−2 |
| Kr-85 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 101 | 2.7 × 102 | 1.5 × 101 | 3.9 × 102 |
| Kr-85m | | 8.0 | 2.2 × 102 | 3.0 | 8.1 × 101 | 3.0 × 105 | 8.2 × 106 |
| Kr-87 | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 1.0 × 106 | 2.8 × 107 |
| La-137 | Lanthanum (57) | 3.0 × 101 | 8.1 × 102 | 6.0 | 1.6 × 102 | 1.6 × 10−3 | 4.4 × 10−2 |
| La-140 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 2.1 × 104 | 5.6 × 105 |
| Lu-172 | Lutetium (71) | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 4.2 × 103 | 1.1 × 105 |
| Lu-173 | | 8.0 | 2.2 × 102 | 8.0 | 2.2 × 102 | 5.6 × 101 | 1.5 × 103 |
| Lu-174 | | 9.0 | 2.4 × 102 | 9.0 | 2.4 × 102 | 2.3 × 101 | 6.2 × 102 |
| Lu-174m | | 2.0 × 101 | 5.4 × 102 | 1.0 × 101 | 2.7 × 102 | 2.0 × 102 | 5.3 × 103 |
| Lu-177 | | 3.0 × 101 | 8.1 × 102 | 7.0 × 10−1 | 1.9 × 101 | 4.1 × 103 | 1.1 × 105 |
| Mg-28 (a) | Magnesium (12) | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 2.0 × 105 | 5.4 × 106 |
| Mn-52 | Manganese (25) | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.6 × 104 | 4.4 × 105 |
| Mn-53 | | Unlimited | Unlimited | Unlimited | Unlimited | 6.8 × 10−5 | 1.8 × 10−3 |
| Mn-54 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 2.9 × 102 | 7.7 × 103 |
| Mn-56 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 8.0 × 105 | 2.2 × 107 |
| Mo-93 | Molybdenum (42) | 4.0 × 101 | 1.1 × 103 | 2.0 × 101 | 5.4 × 102 | 4.1 × 10−2 | 1.1 |
| Mo-99(a)(i) | | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.8 × 104 | 4.8 × 105 |
| N-13 | Nitrogen (7) | 9.0 × 10−1 | 2.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 5.4 × 107 | 1.5 × 109 |
| Na-22 | Sodium (11) | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 2.3 × 102 | 6.3 × 103 |
| Na-24 | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 3.2 × 105 | 8.7 × 106 |
| Nb-93m | Niobium (41) | 4.0 × 101 | 1.1 × 103 | 3.0 × 101 | 8.1 × 102 | 8.8 | 2.4 × 102 |
| Nb-94 | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 6.9 × 10−3 | 1.9 × 10−1 |
| Nb-95 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 1.5 × 103 | 3.9 × 104 |
| Nb-97 | | 9.0 × 10−1 | 2.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 9.9 × 105 | 2.7 × 107 |
| Nd-147 | Neodymium (60) | 6.0 | 1.6 × 102 | 6.0 × 10−1 | 1.6 × 101 | 3.0 × 103 | 8.1 × 104 |
| Nd-149 | | 6.0 × 10−1 | 1.6 × 101 | 5.0 × 10−1 | 1.4 × 101 | 4.5 × 105 | 1.2 × 107 |
| Ni-59 | Nickel (28) | Unlimited | Unlimited | Unlimited | Unlimited | 3.0 × 10−3 | 8.0 × 10−2 |
| Ni-63 | | 4.0 × 101 | 1.1 × 103 | 3.0 × 101 | 8.1 × 102 | 2.1 | 5.7 × 101 |
| Ni-65 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 7.1 × 105 | 1.9 × 107 |
| Np-235 | Neptunium (93) | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 5.2 × 101 | 1.4 × 103 |
| Np-236 (short-lived) | | 2.0 × 101 | 5.4 × 102 | 2.0 | 5.4 × 101 | 4.7 × 10−4 | 1.3 × 10−2 |
| Np-236 (long-lived) | | 9.0 × 100 | 2.4 × 102 | 2.0 × 10−2 | 5.4 × 10−1 | 4.7 × 10−4 | 1.3 × 10−2 |
| Np-237 | | 2.0 × 101 | 5.4 × 102 | 2.0 × 10−3 | 5.4 × 10−2 | 2.6 × 10−5 | 7.1 × 10−4 |
| Np-239 | | 7.0 | 1.9 × 102 | 4.0 × 10−1 | 1.1 × 101 | 8.6 × 103 | 2.3 × 105 |
| Os-185 | Osmium (76) | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 2.8 × 102 | 7.5 × 103 |
| Os-191 | | 1.0 × 101 | 2.7 × 102 | 2.0 | 5.4 × 101 | 1.6 × 103 | 4.4 × 104 |
| Os-191m | | 4.0 × 101 | 1.1 × 103 | 3.0 × 101 | 8.1 × 102 | 4.6 × 104 | 1.3 × 106 |
| Os-193 | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.0 × 104 | 5.3 × 105 |
| Os-194 (a) | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.1 × 101 | 3.1 × 102 |
| P-32 | Phosphorus (15) | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 1.1 × 104 | 2.9 × 105 |
| P-33 | | 4.0 × 101 | 1.1 × 103 | 1.0 | 2.7 × 101 | 5.8 × 103 | 1.6 × 105 |
| Pa-230 (a) | Protactinium (91) | 2.0 | 5.4 × 101 | 7.0 × 10−2 | 1.9 | 1.2 × 103 | 3.3 × 104 |
| Pa-231 | | 4.0 | 1.1 × 102 | 4.0 × 10−4 | 1.1 × 10−2 | 1.7 × 10−3 | 4.7 × 10−2 |
| Pa-233 | | 5.0 | 1.4 × 102 | 7.0 × 10−1 | 1.9 × 101 | 7.7 × 102 | 2.1 × 104 |
| Pb-201 | Lead (82) | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 6.2 × 104 | 1.7 × 106 |
| Pb-202 | | 4.0 × 101 | 1.1 × 103 | 2.0 × 101 | 5.4 × 102 | 1.2 × 10−4 | 3.4 × 10−3 |
| Pb-203 | | 4.0 | 1.1 × 102 | 3.0 | 8.1 × 101 | 1.1 × 104 | 3.0 × 105 |
| Pb-205 | | Unlimited | Unlimited | Unlimited | Unlimited | 4.5 × 10−6 | 1.2 × 10−4 |
| Pb-210 (a) | | 1.0 | 2.7 × 101 | 5.0 × 10−2 | 1.4 | 2.8 | 7.6 × 101 |
| Pb-212 (a) | | 7.0 × 10−1 | 1.9 × 101 | 2.0 × 10−1 | 5.4 | 5.1 × 104 | 1.4 × 106 |
| Pd-103 (a) | Palladium (46) | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 2.8 × 103 | 7.5 × 104 |
| Pd-107 | | Unlimited | Unlimited | Unlimited | Unlimited | 1.9 × 10−5 | 5.1 × 10−4 |
| Pd-109 | | 2.0 | 5.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 7.9 × 104 | 2.1 × 106 |
| Pm-143 | Promethium (61) | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 1.3 × 102 | 3.4 × 103 |
| Pm-144 | | 7.0 × 10−1 | 1.9 × 101 | 7.0 × 10−1 | 1.9 × 101 | 9.2 × 101 | 2.5 × 103 |
| Pm-145 | | 3.0 × 101 | 8.1 × 102 | 1.0 × 101 | 2.7 × 102 | 5.2 | 1.4 × 102 |
| Pm-147 | | 4.0 × 101 | 1.1 × 103 | 2.0 | 5.4 × 101 | 3.4 × 101 | 9.3 × 102 |
| Pm-148m (a) | | 8.0 × 10−1 | 2.2 × 101 | 7.0 × 10−1 | 1.9 × 101 | 7.9 × 102 | 2.1 × 104 |
| Pm-149 | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.5 × 104 | 4.0 × 105 |
| Pm-151 | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.7 × 104 | 7.3 × 105 |
| Po-210 | Polonium (84) | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−2 | 5.4 × 10−1 | 1.7 × 102 | 4.5 × 103 |
| Pr-142 | Praseodymium (59) | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 4.3 × 104 | 1.2 × 106 |
| Pr-143 | | 3.0 | 8.1 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.5 × 103 | 6.7 × 104 |
| Pt-188 (a) | Platinum (78) | 1.0 | 2.7 × 101 | 8.0 × 10−1 | 2.2 × 101 | 2.5 × 103 | 6.8 × 104 |
| Pt-191 | | 4.0 | 1.1 × 102 | 3.0 | 8.1 × 101 | 8.7 × 103 | 2.4 × 105 |
| Pt-193 | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 1.4 | 3.7 × 101 |
| Pt-193m | | 4.0 × 101 | 1.1 × 103 | 5.0 × 10−1 | 1.4 × 101 | 5.8 × 103 | 1.6 × 105 |
| Pt-195m | | 1.0 × 101 | 2.7 × 102 | 5.0 × 10−1 | 1.4 × 101 | 6.2 × 103 | 1.7 × 105 |
| Pt-197 | | 2.0 × 101 | 5.4 × 102 | 6.0 × 10−1 | 1.6 × 101 | 3.2 × 104 | 8.7 × 105 |
| Pt-197m | | 1.0 × 101 | 2.7 × 102 | 6.0 × 10−1 | 1.6 × 101 | 3.7 × 105 | 1.0 × 107 |
| Pu-236 | Plutonium (94) | 3.0 × 101 | 8.1 × 102 | 3.0 × 10−3 | 8.1 × 10−2 | 2.0 × 101 | 5.3 × 102 |
| Pu-237 | | 2.0 × 101 | 5.4 × 102 | 2.0 × 101 | 5.4 × 102 | 4.5 × 102 | 1.2 × 104 |
| Pu-238 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 6.3 × 10−1 | 1.7 × 101 |
| Pu-239 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 2.3 × 10−3 | 6.2 × 10−2 |
| Pu-240 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 8.4 × 10−3 | 2.3 × 10−1 |
| Pu-241 (a) | | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−2 | 1.6 | 3.8 | 1.0 × 102 |
| Pu-242 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 1.5 × 10−4 | 3.9 × 10−3 |
| Pu-244 (a) | | 4.0 × 10−1 | 1.1 × 101 | 1.0 × 10−3 | 2.7 × 10−2 | 6.7 × 10−7 | 1.8 × 10−5 |
| Ra-223 (a) | Radium (88) | 4.0 × 10−1 | 1.1 × 101 | 7.0 × 10−3 | 1.9 × 10−1 | 1.9 × 103 | 5.1 × 104 |
| Ra-224 (a) | | 4.0 × 10−1 | 1.1 × 101 | 2.0 × 10−2 | 5.4 × 10−1 | 5.9 × 103 | 1.6 × 105 |
| Ra-225 (a) | | 2.0 × 10−1 | 5.4 | 4.0 × 10−3 | 1.1 × 10−1 | 1.5 × 103 | 3.9 × 104 |
| Ra-226 (a) | | 2.0 × 10−1 | 5.4 | 3.0 × 10−3 | 8.1 × 10−2 | 3.7 × 10−2 | 1.0 |
| Ra-228 (a) | | 6.0 × 10−1 | 1.6 × 101 | 2.0 × 10−2 | 5.4 × 10−1 | 1.0 × 101 | 2.7 × 102 |
| Rb-81 | Rubidium (37) | 2.0 | 5.4 × 101 | 8.0 × 10−1 | 2.2 × 101 | 3.1 × 105 | 8.4 × 106 |
| Rb-83 (a) | | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 6.8 × 102 | 1.8 × 104 |
| Rb-84 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 1.8 × 103 | 4.7 × 104 |
| Rb-86 | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 3.0 × 103 | 8.1 × 104 |
| Rb-87 | | Unlimited | Unlimited | Unlimited | Unlimited | 3.2 × 10−9 | 8.6 × 10−8 |
| Rb(nat) | | Unlimited | Unlimited | Unlimited | Unlimited | 6.7 × 10 −10 | 1.8 × 10 −8 |
| Re-184 | Rhenium (75) | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 6.9 × 102 | 1.9 × 104 |
| Re-184m | | 3.0 | 8.1 × 101 | 1.0 | 2.7 × 101 | 1.6 × 102 | 4.3 × 103 |
| Re-186 | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 6.9 × 103 | 1.9 × 105 |
| Re-187 | | Unlimited | Unlimited | Unlimited | Unlimited | 1.4 × 10−9 | 3.8 × 10−8 |
| Re-188 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 3.6 × 104 | 9.8 × 105 |
| Re-189 (a) | | 3.0 | 8.1 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.5 × 104 | 6.8 × 105 |
| Re(nat) | | Unlimited | Unlimited | Unlimited | Unlimited | 0.0 | 2.4 × 10−8 |
| Rh-99 | Rhodium (45) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 3.0 × 103 | 8.2 × 104 |
| Rh-101 | | 4.0 | 1.1 × 102 | 3.0 | 8.1 × 101 | 4.1 × 101 | 1.1 × 103 |
| Rh-102 | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 4.5 × 101 | 1.2 × 103 |
| Rh-102m | | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 2.3 × 102 | 6.2 × 103 |
| Rh-103m | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 1.2 × 106 | 3.3 × 107 |
| Rh-105 | | 1.0 × 101 | 2.7 × 102 | 8.0 × 10−1 | 2.2 × 101 | 3.1 × 104 | 8.4 × 105 |
| Rn-222 (a) | Radon (86) | 3.0 × 10−1 | 8.1 | 4.0 × 10−3 | 1.1 × 10−1 | 5.7 × 103 | 1.5 × 105 |
| Ru-97 | Ruthenium (44) | 5.0 | 1.4 × 102 | 5.0 | 1.4 × 102 | 1.7 × 104 | 4.6 × 105 |
| Ru-103 (a) | | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 1.2 × 103 | 3.2 × 104 |
| Ru-105 | | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.5 × 105 | 6.7 × 106 |
| Ru-106 (a) | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 1.2 × 102 | 3.3 × 103 |
| S-35 | Sulphur (16) | 4.0 × 101 | 1.1 × 103 | 3.0 | 8.1 × 101 | 1.6 × 103 | 4.3 × 104 |
| Sb-122 | Antimony (51) | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.5 × 104 | 4.0 × 105 |
| Sb-124 | | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 6.5 × 102 | 1.7 × 104 |
| Sb-125 | | 2.0 | 5.4 × 101 | 1.0 | 2.7 × 101 | 3.9 × 101 | 1.0 × 103 |
| Sb-126 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 3.1 × 103 | 8.4 × 104 |
| Sc-44 | Scandium (21) | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 6.7 × 105 | 1.8 × 107 |
| Sc-46 | | 5.0 × 10−1 | 1.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 1.3 × 103 | 3.4 × 104 |
| Sc-47 | | 1.0 × 101 | 2.7 × 102 | 7.0 × 10−1 | 1.9 × 101 | 3.1 × 104 | 8.3 × 105 |
| Sc-48 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 5.5 × 104 | 1.5 × 106 |
| Se-75 | Selenium (34) | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 5.4 × 102 | 1.5 × 104 |
| Se-79 | | 4.0 × 101 | 1.1 × 103 | 2.0 | 5.4 × 101 | 2.6 × 10−3 | 7.0 × 10−2 |
| Si-31 | Silicon (14) | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.4 × 106 | 3.9 × 107 |
| Si-32 | | 4.0 × 101 | 1.1 × 103 | 5.0 × 10−1 | 1.4 × 101 | 3.9 | 1.1 × 102 |
| Sm-145 | Samarium (62) | 1.0 × 101 | 2.7 × 102 | 1.0 × 101 | 2.7 × 102 | 9.8 × 101 | 2.6 × 103 |
| Sm-147 | | Unlimited | Unlimited | Unlimited | Unlimited | 8.5 × 10−10 | 2.3 × 10−8 |
| Sm-151 | | 4.0 × 101 | 1.1 × 103 | 1.0 × 101 | 2.7 × 102 | 9.7 × 10−1 | 2.6 × 101 |
| Sm-153 | | 9.0 | 2.4 × 102 | 6.0 × 10−1 | 1.6 × 101 | 1.6 × 104 | 4.4 × 105 |
| Sn-113 (a) | Tin (50) | 4.0 | 1.1 × 102 | 2.0 | 5.4 × 101 | 3.7 × 102 | 1.0 × 104 |
| Sn-117m | | 7.0 | 1.9 × 102 | 4.0 × 10−1 | 1.1 × 101 | 3.0 × 103 | 8.2 × 104 |
| Sn-119m | | 4.0 × 101 | 1.1 × 103 | 3.0 × 101 | 8.1 × 102 | 1.4 × 102 | 3.7 × 103 |
| Sn-121m (a) | | 4.0 × 101 | 1.1 × 103 | 9.0 × 10−1 | 2.4 × 101 | 2.0 | 5.4 × 101 |
| Sn-123 | | 8.0 × 10−1 | 2.2 × 101 | 6.0 × 10−1 | 1.6 × 101 | 3.0 × 102 | 8.2 × 103 |
| Sn-125 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 103 | 1.1 × 105 |
| Sn-126 (a) | | 6.0 × 10−1 | 1.6 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.0 × 10−3 | 2.8 × 10−2 |
| Sr-82 (a) | Strontium (38) | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 2.3 × 103 | 6.2 × 104 |
| Sr-85 | | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 8.8 × 102 | 2.4 × 104 |
| Sr-85m | | 5.0 | 1.4 × 102 | 5.0 | 1.4 × 102 | 1.2 × 106 | 3.3 × 107 |
| Sr-87m | | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 4.8 × 105 | 1.3 × 107 |
| Sr-89 | | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.1 × 103 | 2.9 × 104 |
| Sr-90 (a) | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 5.1 | 1.4 × 102 |
| Sr-91 (a) | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.3 × 105 | 3.6 × 106 |
| Sr-92 (a) | | 1.0 | 2.7 × 101 | 3.0 × 10−1 | 8.1 | 4.7 × 105 | 1.3 × 107 |
| T(H-3) | Tritium (1) | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 3.6 × 102 | 9.7 × 103 |
| Ta-178 (long-lived) | Tantalum (73) | 1.0 | 2.7 × 101 | 8.0 × 10−1 | 2.2 × 101 | 4.2 × 106 | 1.1 × 108 |
| Ta-179 | | 3.0 × 101 | 8.1 × 102 | 3.0 × 101 | 8.1 × 102 | 4.1 × 101 | 1.1 × 103 |
| Ta-182 | | 9.0 × 10−1 | 2.4 × 101 | 5.0 × 10−1 | 1.4 × 101 | 2.3 × 102 | 6.2 × 103 |
| Tb-157 | Terbium (65) | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 5.6 × 10−1 | 1.5 × 101 |
| Tb-158 | | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 5.6 × 10−1 | 1.5 × 101 |
| Tb-160 | | 1.0 | 2.7 × 101 | 6.0 × 10−1 | 1.6 × 101 | 4.2 × 102 | 1.1 × 104 |
| Tc-95m (a) | Technetium (43) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 8.3 × 102 | 2.2 × 104 |
| Tc-96 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.2 × 104 | 3.2 × 105 |
| Tc-96m (a) | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.4 × 106 | 3.8 × 107 |
| Tc-97 | | Unlimited | Unlimited | Unlimited | Unlimited | 5.2 × 10−5 | 1.4 × 10−3 |
| Tc-97m | | 4.0 × 101 | 1.1 × 103 | 1.0 | 2.7 × 101 | 5.6 × 102 | 1.5 × 104 |
| Tc-98 | | 8.0 × 10−1 | 2.2 × 101 | 7.0 × 10−1 | 1.9 × 101 | 3.2 × 10−5 | 8.7 × 10−4 |
| Tc-99 | | 4.0 × 101 | 1.1 × 103 | 9.0 × 10−1 | 2.4 × 101 | 6.3 × 10−4 | 1.7 × 10−2 |
| Tc-99m | | 1.0 × 101 | 2.7 × 102 | 4.0 | 1.1 × 102 | 1.9 × 105 | 5.3 × 106 |
| Te-121 | Tellurium (52) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 2.4 × 103 | 6.4 × 104 |
| Te-121m | | 5.0 | 1.4 × 102 | 3.0 | 8.1 × 101 | 2.6 × 102 | 7.0 × 103 |
| Te-123m | | 8.0 | 2.2 × 102 | 1.0 | 2.7 × 101 | 3.3 × 102 | 8.9 × 103 |
| Te-125m | | 2.0 × 101 | 5.4 × 102 | 9.0 × 10−1 | 2.4 × 101 | 6.7 × 102 | 1.8 × 104 |
| Te-127 | | 2.0 × 101 | 5.4 × 102 | 7.0 × 10−1 | 1.9 × 101 | 9.8 × 104 | 2.6 × 106 |
| Te-127m (a) | | 2.0 × 101 | 5.4 × 102 | 5.0 × 10−1 | 1.4 × 101 | 3.5 × 102 | 9.4 × 103 |
| Te-129 | | 7.0 × 10−1 | 1.9 × 101 | 6.0 × 10−1 | 1.6 × 101 | 7.7 × 105 | 2.1 × 107 |
| Te-129m (a) | | 8.0 × 10−1 | 2.2 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.1 × 103 | 3.0 × 104 |
| Te-131m (a) | | 7.0 × 10−1 | 1.9 × 101 | 5.0 × 10−1 | 1.4 × 101 | 3.0 × 104 | 8.0 × 105 |
| Te-132 (a) | | 5.0 × 10−1 | 1.4 × 101 | 4.0 × 10−1 | 1.1 × 101 | 1.1 × 104 | 3.0 × 105 |
| Th-227 | Thorium (90) | 1.0 × 101 | 2.7 × 102 | 5.0 × 10−3 | 1.4 × 10−1 | 1.1 × 103 | 3.1 × 104 |
| Th-228 (a) | | 5.0 × 10−1 | 1.4 × 101 | 1.0 × 10−3 | 2.7 × 10−2 | 3.0 × 101 | 8.2 × 102 |
| Th-229 | | 5.0 | 1.4 × 102 | 5.0 × 10−4 | 1.4 × 10−2 | 7.9 × 10−3 | 2.1 × 10−1 |
| Th-230 | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 7.6 × 10−4 | 2.1 × 10−2 |
| Th-231 | | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−2 | 5.4 × 10−1 | 2.0 × 104 | 5.3 × 105 |
| Th-232 | | Unlimited | Unlimited | Unlimited | Unlimited | 4.0 × 10−9 | 1.1 × 10−7 |
| Th-234 (a) | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 8.6 × 102 | 2.3 × 104 |
| Th(nat) | | Unlimited | Unlimited | Unlimited | Unlimited | 8.1 × 10−9 | 2.2 × 10−7 |
| Ti-44 (a) | Titanium (22) | 5.0 × 10−1 | 1.4 × 101 | 4.0 × 10−1 | 1.1 × 101 | 6.4 | 1.7 × 102 |
| Tl-200 | Thallium (81) | 9.0 × 10−1 | 2.4 × 101 | 9.0 × 10−1 | 2.4 × 101 | 2.2 × 104 | 6.0 × 105 |
| Tl-201 | | 1.0 × 101 | 2.7 × 102 | 4.0 | 1.1 × 102 | 7.9 × 103 | 2.1 × 105 |
| Tl-202 | | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 2.0 × 103 | 5.3 × 104 |
| Tl-204 | | 1.0 × 101 | 2.7 × 102 | 7.0 × 10−1 | 1.9 × 101 | 1.7 × 101 | 4.6 × 102 |
| Tm-167 | Thulium (69) | 7.0 | 1.9 × 102 | 8.0 × 10−1 | 2.2 × 101 | 3.1 × 103 | 8.5 × 104 |
| Tm-170 | | 3.0 | 8.1 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.2 × 102 | 6.0 × 103 |
| Tm-171 | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 |
| U-230 (fast lung absorption) (a)(d) | Uranium (92) | 4.0 × 101 | 1.1 × 103 | 1.0 × 10−1 | 2.7 | 1.0 × 103 | 2.7 × 104 |
| U-230 (medium lung absorption) (a)(e) | | 4.0 × 101 | 1.1 × 103 | 4.0 × 10−3 | 1.1 × 10−1 | 1.0 × 103 | 2.7 × 104 |
| U-230 (slow lung absorption) (a)(f) | | 3.0 × 101 | 8.1 × 102 | 3.0 × 10−3 | 8.1 × 10−2 | 1.0 × 103 | 2.7 × 104 |
| U-232 (fast lung absorption) (d) | | 4.0 × 101 | 1.1 × 103 | 1.0 × 10−2 | 2.7 × 10−1 | 8.3 × 10−1 | 2.2 × 101 |
| U-232 (medium lung absorption) (e) | | 4.0 × 101 | 1.1 × 103 | 7.0 × 10−3 | 1.9 × 10−1 | 8.3 × 10−1 | 2.2 × 101 |
| U-232 (slow lung absorption) (f) | | 1.0 × 101 | 2.7 × 102 | 1.0 × 10−3 | 2.7 × 10−2 | 8.3 × 10−1 | 2.2 × 101 |
| U-233 (fast lung absorption) (d) | | 4.0 × 101 | 1.1 × 103 | 9.0 × 10−2 | 2.4 | 3.6 × 10−4 | 9.7 × 10−3 |
| U-233 (medium lung absorption) (e) | | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−2 | 5.4 × 10−1 | 3.6 × 10−4 | 9.7 × 10−3 |
| U-233 (slow lung absorption) (f) | | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−3 | 1.6 × 10−1 | 3.6 × 10−4 | 9.7 × 10−3 |
| U-234 (fast lung absorption) (d) | | 4.0 × 101 | 1.1 × 103 | 9.0 × 10−2 | 2.4 | 2.3 × 10−4 | 6.2 × 10−3 |
| U-234 (medium lung absorption) (e) | | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−2 | 5.4 × 10−1 | 2.3 × 10−4 | 6.2 × 10−3 |
| U-234 (slow lung absorption) (f) | | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−3 | 1.6 × 10−1 | 2.3 × 10−4 | 6.2 × 10−3 |
| U-235 (all lung absorption types) (a),(d),(e),(f) | | Unlimited | Unlimited | Unlimited | Unlimited | 8.0 × 10−8 | 2.2 × 10−6 |
| U-236 (fast lung absorption) (d) | | Unlimited | Unlimited | Unlimited | Unlimited | 2.4 × 10−6 | 6.5 × 10−5 |
| U-236 (medium lung absorption) (e) | | 4.0 × 101 | 1.1 × 103 | 2.0 × 10−2 | 5.4 × 10−1 | 2.4 × 10−6 | 6.5 × 10−5 |
| U-236 (slow lung absorption) (f) | | 4.0 × 101 | 1.1 × 103 | 6.0 × 10−3 | 1.6 × 10−1 | 2.4 × 10−6 | 6.5 × 10−5 |
| U-238 (all lung absorption types) (d),(e),(f) | | Unlimited | Unlimited | Unlimited | Unlimited | 1.2 × 10−8 | 3.4 × 10−7 |
| U (nat) | | Unlimited | Unlimited | Unlimited | Unlimited | 2.6 × 10−8 | 7.1 × 10−7 |
| U (enriched to 20% or less)(g) | | Unlimited | Unlimited | Unlimited | Unlimited | see § 173.434 | see § 173.434 |
| U (dep) | | Unlimited | Unlimited | Unlimited | Unlimited | see § 173.434 | see § 173.434 |
| V-48 | Vanadium (23) | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 6.3 × 103 | 1.7 × 105 |
| V-49 | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 3.0 × 102 | 8.1 × 103 |
| W-178 (a) | Tungsten (74) | 9.0 | 2.4 × 102 | 5.0 | 1.4 × 102 | 1.3 × 103 | 3.4 × 104 |
| W-181 | | 3.0 × 101 | 8.1 × 102 | 3.0 × 101 | 8.1 × 102 | 2.2 × 102 | 6.0 × 103 |
| W-185 | | 4.0 × 101 | 1.1 × 103 | 8.0 × 10−1 | 2.2 × 101 | 3.5 × 102 | 9.4 × 103 |
| W-187 | | 2.0 | 5.4 × 101 | 6.0 × 10−1 | 1.6 × 101 | 2.6 × 104 | 7.0 × 105 |
| W-188 (a) | | 4.0 × 10−1 | 1.1 × 101 | 3.0 × 10−1 | 8.1 | 3.7 × 102 | 1.0 × 104 |
| Xe-122 (a) | Xenon (54) | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 4.8 × 104 | 1.3 × 106 |
| Xe-123 | | 2.0 | 5.4 × 101 | 7.0 × 10−1 | 1.9 × 101 | 4.4 × 105 | 1.2 × 107 |
| Xe-127 | | 4.0 | 1.1 × 102 | 2.0 | 5.4 × 101 | 1.0 × 103 | 2.8 × 104 |
| Xe-131m | | 4.0 × 101 | 1.1 × 103 | 4.0 × 101 | 1.1 × 103 | 3.1 × 103 | 8.4 × 104 |
| Xe-133 | | 2.0 × 101 | 5.4 × 102 | 1.0 × 101 | 2.7 × 102 | 6.9 × 103 | 1.9 × 105 |
| Xe-135 | | 3.0 | 8.1 × 101 | 2.0 | 5.4 × 101 | 9.5 × 104 | 2.6 × 106 |
| Y-87 (a) | Yttrium (39) | 1.0 | 2.7 × 101 | 1.0 | 2.7 × 101 | 1.7 × 104 | 4.5 × 105 |
| Y-88 | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 5.2 × 102 | 1.4 × 104 |
| Y-90 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 2.0 × 104 | 5.4 × 105 |
| Y-91 | | 6.0 × 10−1 | 1.6 × 101 | 6.0 × 10−1 | 1.6 × 101 | 9.1 × 102 | 2.5 × 104 |
| Y-91m | | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 1.5 × 106 | 4.2 × 107 |
| Y-92 | | 2.0 × 10−1 | 5.4 | 2.0 × 10−1 | 5.4 | 3.6 × 105 | 9.6 × 106 |
| Y-93 | | 3.0 × 10−1 | 8.1 | 3.0 × 10−1 | 8.1 | 1.2 × 105 | 3.3 × 106 |
| Yb-169 | Ytterbium (70) | 4.0 | 1.1 × 102 | 1.0 | 2.7 × 101 | 8.9 × 102 | 2.4 × 104 |
| Yb-175 | | 3.0 × 101 | 8.1 × 102 | 9.0 × 10−1 | 2.4 × 101 | 6.6 × 103 | 1.8 × 105 |
| Zn-65 | Zinc (30) | 2.0 | 5.4 × 101 | 2.0 | 5.4 × 101 | 3.0 × 102 | 8.2 × 103 |
| Zn-69 | | 3.0 | 8.1 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.8 × 106 | 4.9 × 107 |
| Zn-69m (a) | | 3.0 | 8.1 × 101 | 6.0 × 10−1 | 1.6 × 101 | 1.2 × 105 | 3.3 × 106 |
| Zr-88 | Zirconium (40) | 3.0 | 8.1 × 101 | 3.0 | 8.1 × 101 | 6.6 × 102 | 1.8 × 104 |
| Zr-93 | | Unlimited | Unlimited | Unlimited | Unlimited | 9.3 × 10−5 | 2.5 × 10−3 |
| Zr-95 (a) | | 2.0 | 5.4 × 101 | 8.0 × 10−1 | 2.2 × 101 | 7.9 × 102 | 2.1 × 104 |
| Zr-97 (a) | | 4.0 × 10−1 | 1.1 × 101 | 4.0 × 10−1 | 1.1 × 101 | 7.1 × 104 | 1.9 × 106 |
| a A1 and/or A2 values for these parent radionuclides include contributions from daughter nuclides with half-lives less than 10 days as listed in footnote (a) to Table 2 in the “IAEA Regulations for the Safe Transport of Radioactive Material, SSR-6” (IBR, see § 171.7 of this subchapter). |
| b The values of A1 and A2 in curies (Ci) are approximate and for information only; the regulatory standard units are Terabecquerels (TBq), (see § 171.10). |
| c The activity of Ir-192 in special form may be determined from a measurement of the rate of decay or a measurement of the radiation level at a prescribed distance from the source. |
| d These values apply only to compounds of uranium that take the chemical form of UF6, UO2 F2 and UO2 (NO3)2 in both normal and accident conditions of transport. |
| e These values apply only to compounds of uranium that take the chemical form of UO3, UF4, UCl4 and hexavalent compounds in both normal and accident conditions of transport. |
| f These values apply to all compounds of uranium other than those specified in notes (d) and (e) of this table. |
| g These values apply to unirradiated uranium only. |
| h [Reserved] |
| i A2 = 0.74 TBq (20 Ci) for Mo-99 for domestic use. |

[69 FR 3678, Jan. 26, 2004; 69 FR 55119, Sept. 13, 2004, as amended at 71 FR 54395, Sept. 14, 2006; 77 FR 60942, Oct. 5, 2012; 79 FR 40615, July 11, 2014; 80 FR 1163, Jan. 8, 2015; 85 FR 83401, Dec. 21, 2020]