USDOT Exempt Quantities & Concentrations
Federal regulatory agencies consider certain quantities of radioactive materials to be exempt from regulatory authority. Specifically, the U. S. Department of Transportation (USDOT) has set levels of radioactivity below which a shipment is not subject to their rules (i.e., exempt consignment).
The following is the listing of exempt concentrations, in units of “curies per gram” and exempt “curies”, promulgated by the U. S. Department of Transportation in Title 49, Code of Federal Regulations, Section 173.436. Those marked with a “*” include the parent and progeny in equilibrium. These values are subject to change. Please contact Plexus-NSD for guidance on exempt consignments.
Actinium
- Ac-225 – 2.7E-10 – 2.7E-7
- Ac-227 – 2.7E-12 – 2.7E-8
- Ac-228 – 2.7E-10 – 2.7E-5
Silver
- Ag-105 – 2.7E-9 – 2.7E-5
- Ag-108m* – 2.7E-10 – 2.7E-5
- Ag-110m – 2.7E-10 – 2.7E-5
- Ag-111 – 2.7E-8 – 2.7E-5
Aluminum
Americium
- Am-241 – 2.7E-11 – 2.7E-7
- Am-242m* – 2.7E-11 – 2.7E-7
- Am-243* – 2.7E-11 – 2.7E-8
Argon
- Ar-37 – 2.7E-5 – 2.7E-3
- Ar-39 – 2.7E-4 – 2.7E-7
- Ar-41 – 2.7E-9 – 2.7E-2
Arsenic
- As-72 – 2.7E-10 – 2.7E-6
- As-73 – 2.7E-8 – 2.7E-4
- As-74 – 2.7E-10 – 2.7E-5
- As-76 – 2.7E-9 – 2.7E-6
- As-77 – 2.7E-8 – 2.7E-5
Astatine
Gold
- Au-193 – 2.7E-9 – 2.7E-4
- Au-194 – 2.7E-10 – 2.7E-5
- Au-195 – 2.7E-9 – 2.7E-4
- Au-198 – 2.7E-9 – 2.7E-5
- Au-199 – 2.7E-9 – 2.7E-5
Barium
- Ba-131 – 2.7E-9 – 2.7E-5
- Ba-133 – 2.7E-9 – 2.7E-5
- Ba-133m – 2.7E-9 – 2.7E-5
- Ba-140* – 2.7E-10 – 2.7E-6
Beryllium
- Be-7 – 2.7E-8 – 2.7E-4
- Be-10 – 2.7E-7 – 2.7E-5
Bismuth
- Bi-205 – 2.7E-10 – 2.7E-5
- Bi-206 – 2.7E-10 – 2.7E-6
- Bi-207 – 2.7E-10 – 2.7E-5
- Bi-210 – 2.7E-8 – 2.7E-5
- Bi-210m – 2.7E-10 – 2.7E-6
- Bi-212* – 2.7E-10 – 2.7E-6
Berkelium
- Bk-247 – 2.7E-11 – 2.7E-7
- Bk-249 – 2.7E-8 – 2.7E-5
Bromine
- Br-76 – 2.7E-10 – 2.7E-6
- Br-77 – 2.7E-9 – 2.7E-5
- Br-82 – 2.7E-10 – 2.7E-5
Carbon
- C-11 – 2.7E-10 – 2.7E-5
- C-14 – 2.7E-7 – 2.7E-4
Calcium
- Ca-41 – 2.7E-6 – 2.7E-4
- Ca-45 – 2.7E-7 – 2.7E-4
- Ca-47 – 2.7E-10 – 2.7E-5
Cadmium
- Cd-109 – 2.7E-7 – 2.7E-5
- Cd-113m – 2.7E-8 – 2.7E-5
- Cd-115 – 2.7E-9 – 2.7E-5
- Cd-115m – 2.7E-8 – 2.7E-5
Cerium
- Ce-139 – 2.7E-9 – 2.7E-5
- Ce-141 – 2.7E-9 – 2.7E-4
- Ce-143 – 2.7E-9 – 2.7E-5
- Ce-144* – 2.7E-9 – 2.7E-6
Californium
- Cf-248 – 2.7E-10 – 2.7E-7
- Cf-249 – 2.7E-11 – 2.7E-8
- Cf-250 – 2.7E-10 – 2.7E-7
- Cf-251 – 2.7E-11 – 2.7E-8
- Cf-252 – 2.7E-10 – 2.7E-7
- Cf-253 – 2.7E-9 – 2.7E-6
- Cf-254 – 2.7E-11 – 2.7E-8
Chlorine
- Cl-36 – 2.7E-7 – 2.7E-5
- Cl-38 – 2.7E-10 – 2.7E-6
Curium
- Cm-240 – 2.7E-9 – 2.7E-6
- Cm-241 – 2.7E-9 – 2.7E-5
- Cm-242 – 2.7E-9 – 2.7E-6
- Cm-243 – 2.7E-11 – 2.7E-7
- Cm-244 – 2.7E-10 – 2.7E-7
- Cm-245 – 2.7E-11 – 2.7E-8
- Cm-246 – 2.7E-11 – 2.7E-8
- Cm-247 – 2.7E-11 – 2.7E-7
- Cm-248 – 2.7E-11 – 2.7E-8
Cobalt
- Co-55 – 2.7E-10 – 2.7E-5
- Co-56 – 2.7E-10 – 2.7E-6
- Co-57 – 2.7E-9 – 2.7E-5
- Co-58 – 2.7E-10 – 2.7E-5
- Co-58m – 2.7E-7 – 2.7E-4
- Co-60 – 2.7E-10 – 2.7E-6
Chromium
Cesium
- Cs-129 – 2.7E-9 – 2.7E-6
- Cs-131 – 2.7E-8 – 2.7E-5
- Cs-132 – 2.7E-10 – 2.7E-6
- Cs-134 – 2.7E-10 – 2.7E-7
- Cs-134m – 2.7E-8 – 2.7E-6
- Cs-135 – 2.7E-7 – 2.7E-4
- Cs-136 – 2.7E-10 – 2.7E-6
- Cs-137* – 2.7E-10 – 2.7E-7
Copper
- Cu-64 – 2.7E-9 – 2.7E-5
- Cu-67 – 2.7E-9 – 2.7E-5
Dysprosium
- Dy-159 – 2.7E-8 – 2.7E-4
- Dy-165 – 2.7E-8 – 2.7E-5
- Dy-166 – 2.7E-8 – 2.7E-5
Erbium
- Er-169 – 2.7E-7 – 2.7E-4
- Er-171 – 2.7E-9 – 2.7E-5
Europium
- Eu-147 – 2.7E-9 – 2.7E-5
- Eu-148 – 2.7E-10 – 2.7E-5
- Eu-149 – 2.7E-9 – 2.7E-4
- Eu-150 (short lived) – 2.7E-8 – 2.7E-5
- Eu-150 (long lived) – 2.7E-10 – 2.7E-5
- Eu-152 – 2.7E-10 – 2.7E-5
- Eu-152m – 2.7E-9 – 2.7E-5
- Eu-154 – 2.7E-10 – 2.7E-5
- Eu-155 – 2.7E-9 – 2.7E-4
- Eu-156 – 2.7E-10 – 2.7E-5
Fluorine
Iron
- Fe-52 – 2.7E-10 – 2.7E-5
- Fe-55 – 2.7E-7 – 2.7E-5
- Fe-59 – 2.7E-10 – 2.7E-5
- Fe-60 – 2.7E-9 – 2.7E-6
Gallium
- Ga-67 – 2.7E-9 – 2.7E-5
- Ga-68 – 2.7E-10 – 2.7E-6
- Ga-72 – 2.7E-10 – 2.7E-6
Gadolinium
- Gd-146 – 2.7E-10 – 2.7E-5
- Gd-148 – 2.7E-10 – 2.7E-7
- Gd-153 – 2.7E-9 – 2.7E-4
- Gd-159 – 2.7E-8 – 2.7E-5
Germanium
- Ge-68 – 2.7E-10 – 2.7E-6
- Ge-71 – 2.7E-7 – 2.7E-3
- Ge-77 – 2.7E-10 – 2.7E-6
Hafnium
- Hf-172 – 2.7E-10 – 2.7E-5
- Hf-175 – 2.7E-9 – 2.7E-5
- Hf-181 – 2.7E-10 – 2.7E-5
- Hf-182 – 2.7E-9 – 2.7E-5
Mercury
- Hg-194 – 2.7E-10 – 2.7E-5
- Hg-195m – 2.7E-9 – 2.7E-5
- Hg-197 – 2.7E-9 – 2.7E-4
- Hg-197m – 2.7E-9 – 2.7E-5
- Hg-203 – 2.7E-9 – 2.7E-6
Holmium
- Ho-166 – 2.7E-8 – 2.7E-6
- Ho-166m – 2.7E-10 – 2.7E-5
Iodine
- I-123 – 2.7E-9 – 2.7E-4
- I-124 – 2.7E-10 – 2.7E-5
- I-125 – 2.7E-8 – 2.7E-5
- I-126 – 2.7E-9 – 2.7E-5
- I-129 – 2.7E-9 – 2.7E-6
- I-131 – 2.7E-9 – 2.7E-5
- I-132 – 2.7E-10 – 2.7E-6
- I-133 – 2.7E-10 – 2.7E-5
- I-134 – 2.7E-10 – 2.7E-6
- I-135 – 2.7E-10 – 2.7E-5
Indium
- In-111 – 2.7E-9 – 2.7E-5
- In-113m – 2.7E-9 – 2.7E-5
- In-114m – 2.7E-9 – 2.7E-5
- In-115m – 2.7E-9 – 2.7E-5
Iridium
- Ir-189 – 2.7E-9 – 2.7E-4
- Ir-190 – 2.7E-10 – 2.7E-5
- Ir-192 – 2.7E-10 – 2.7E-7
- Ir-194 – 2.7E-9 – 2.7E-6
Potassium
- K-40 – 2.7E-9 – 2.7E-5
- K-42 – 2.7E-9 – 2.7E-5
- K-43 – 2.7E-10 – 2.7E-5
Krypton
- Kr-81 – 2.7E-7 – 2.7E-4
- Kr-85 – 2.7E-6 – 2.7E-7
- Kr-85m – 2.7E-8 – 2.7E-1
- Kr-87 – 2.7E-9 – 2.7E-2
Lanthanum
- La-137 – 2.7E-8 – 2.7E-4
- La-140 – 2.7E-10 – 2.7E-6
Lutetium
- Lu-172 – 2.7E-10 – 2.7E-5
- Lu-173 – 2.7E-9 – 2.7E-4
- Lu-174 – 2.7E-9 – 2.7E-4
- Lu-174m – 2.7E-9 – 2.7E-4
- Lu-177 – 2.7E-8 – 2.7E-4
Magnesium
Manganese
- Mn-52 – 2.7E-10 – 2.7E-6
- Mn-53 – 2.7E-7 – 2.7E-2
- Mn-54 – 2.7E-10 – 2.7E-5
- Mn-56 – 2.7E-10 – 2.7E-6
Molybdenum
- Mo-93 – 2.7E-8 – 2.7E-3
- Mo-99 – 2.7E-9 – 2.7E-5
Nitrogen
Sodium
- Na-22 – 2.7E-10 – 2.7E-5
- Na-24 – 2.7E-10 – 2.7E-6
Niobium
- Nb-93m – 2.7E-7 – 2.7E-4
- Nb-94 – 2.7E-10 – 2.7E-5
- Nb-95 – 2.7E-10 – 2.7E-5
- Nb-97 – 2.7E-10 – 2.7E-5
Neodmium
- Nd-147 – 2.7E-9 – 2.7E-5
- Nd-149 – 2.7E-9 – 2.7E-5
Nickel
- Ni-59 – 2.7E-7 – 2.7E-3
- Ni-63 – 2.7E-6 – 2.7E-3
- Ni-65 – 2.7E-10 – 2.7E-5
Neptunium
- Np-235 – 2.7E-8 – 2.7E-4
- Np-236 (short-lived) – 2.7E-8 – 2.7E-4
- Np-236 (long-lived) – 2.7E-9 – 2.7E-6
- Np-237* – 2.7E-11 – 2.7E-8
- Np-239 – 2.7E-9 – 2.7E-4
Osmium
- Os-185 – 2.7E-10 – 2.7E-5
- Os-191 – 2.7E-9 – 2.7E-4
- Os-191m – 2.7E-8 – 2.7E-4
- Os-193 – 2.7E-9 – 2.7E-5
- Os-194 – 2.7E-9 – 2.7E-6
Phosphorus
- P-32 – 2.7E-8 – 2.7E-6
- P-33 – 2.7E-6 – 2.7E-3
Protactinium
- Pa-230 – 2.7E-10 – 2.7E-5
- Pa-231 – 2.7E-11 – 2.7E-8
- Pa-233 – 2.7E-9 – 2.7E-4
Lead
- Pb-201 – 2.7E-10 – 2.7E-5
- Pb-202 – 2.7E-8 – 2.7E-5
- Pb-203 – 2.7E-9 – 2.7E-5
- Pb-205 – 2.7E-7 – 2.7E-4
- Pb-210* – 2.7E-10 – 2.7E-7
- Pb-212* – 2.7E-10 – 2.7E-6
Palladium
- Pd-103 – 2.7E-8 – 2.7E-3
- Pd-107 – 2.7E-6 – 2.7E-3
- Pd-109 – 2.7E-8 – 2.7E-5
Promethium
- Pm-143 – 2.7E-9 – 2.7E-5
- Pm-144 – 2.7E-10 – 2.7E-5
- Pm-145 – 2.7E-8 – 2.7E-4
- Pm-147 – 2.7E-7 – 2.7E-4
- Pm-148m – 2.7E-10 – 2.7E-5
- Pm-149 – 2.7E-8 – 2.7E-5
- Pm-151 – 2.7E-9 – 2.7E-5
Poloniuim
- Po-210 – 2.7E-10 – 2.7E-7
Praseodymium
- Pr-142 – 2.7E-9 – 2.7E-6
- Pr-143 – 2.7E-7 – 2.7E-5
Platinum
- Pt-188 – 2.7E-10 – 2.7E-5
- Pt-191 – 2.7E-9 – 2.7E-5
- Pt-193 – 2.7E-7 – 2.7E-4
- Pt-193m – 2.7E-8 – 2.7E-4
- Pt-195m – 2.7E-9 – 2.7E-5
- Pt-197 – 2.7E-8 – 2.7E-5
- Pt-197m – 2.7E-9 – 2.7E-5
Plutonium
- Pu-236 – 2.7E-10 – 2.7E-7
- Pu-237 – 2.7E-8 – 2.7E-4
- Pu-238 – 2.7E-11 – 2.7E-7
- Pu-239 – 2.7E-11 – 2.7E-7
- Pu-240 – 2.7E-11 – 2.7E-8
- Pu-241 – 2.7E-9 – 2.7E-6
- Pu-242 – 2.7E-11 – 2.7E-7
- Pu-244 – 2.7E-11 – 2.7E-7
Radium
- Ra-223* – 2.7E-9 – 2.7E-6
- Ra-224* – 2.7E-10 – 2.7E-6
- Ra-225 – 2.7E-9 – 2.7E-6
- Ra-226* – 2.7E-10 – 2.7E-7
- Ra-228* – 2.7E-10 – 2.7E-6
Rubidium
- Rb-81 – 2.7E-10 – 2.7E-5
- Rb-83 – 2.7E-9 – 2.7E-5
- Rb-84 – 2.7E-10 – 2.7E-5
- Rb-86 – 2.7E-9 – 2.7E-6
- Rb-87 – 2.7E-7 – 2.7E-4
- Rb(nat) – 2.7E-7 – 2.7E-4
Rhenium
- Re-184 – 2.7E-10 – 2.7E-5
- Re-184m – 2.7E-9 – 2.7E-5
- Re-186 – 2.7E-8 – 2.7E-5
- Re-187 – 2.7E-5 – 2.7E-2
- Re-188 – 2.7E-9 – 2.7E-6
- Re-189 – 2.7E-9 – 2.7E-5
- Re(nat) – 2.7E-5 – 2.7E-2
Rhodium
- Rh-99 – 2.7E-10 – 2.7E-5
- Rh-101 – 2.7E-9 – 2.7E-4
- Rh-102 – 2.7E-10 – 2.7E-5
- Rh-102m – 2.7E-9 – 2.7E-5
- Rh-103m – 2.7E-7 – 2.7E-3
- Rh-105 – 2.7E-9 – 2.7E-4
Radon
- Rn-222* – 2.7E-10 – 2.7E-3
Ruthenium
- Ru-97 – 2.7E-9 – 2.7E-4
- Ru-103 – 2.7E-9 – 2.7E-5
- Ru-105 – 2.7E-10 – 2.7E-5
- Ru-106* – 2.7E-9 – 2.7E-6
Sulfur
Antimony
- Sb-122 – 2.7E-9 – 2.7E-7
- Sb-124 – 2.7E-10 – 2.7E-5
- Sb-125 – 2.7E-9 – 2.7E-5
- Sb-126 – 2.7E-10 – 2.7E-6
Scandium
- Sc-44 – 2.7E-10 – 2.7E-6
- Sc-46 – 2.7E-10 – 2.7E-5
- Sc-47 – 2.7E-9 – 2.7E-5
- Sc-48 – 2.7E-10 – 2.7E-6
Selenium
- Se-75 – 2.7E-9 – 2.7E-5
- Se-79 – 2.7E-7 – 2.7E-4
Silicon
- Si-31 – 2.7E-8 – 2.7E-5
- Si-32 – 2.7E-8 – 2.7E-5
Samarium
- Sm-145 – 2.7E-9 – 2.7E-4
- Sm-147 – 2.7E-10 – 2.7E-7
- Sm-151 – 2.7E-7 – 2.7E-3
- Sm-153 – 2.7E-9 – 2.7E-5
Tin
- Sn-113 – 2.7E-8 – 2.7E-4
- Sn-117m – 2.7E-9 – 2.7E-5
- Sn-119m – 2.7E-8 – 2.7E-4
- Sn-121m – 2.7E-8 – 2.7E-4
- Sn-123 – 2.7E-8 – 2.7E-5
- Sn-125 – 2.7E-9 – 2.7E-6
- Sn-126 – 2.7E-10 – 2.7E-6
Strontium
- Sr-82 – 2.7E-10 – 2.7E-6
- Sr-85 – 2.7E-9 – 2.7E-5
- Sr-85m – 2.7E-9 – 2.7E-4
- Sr-87m – 2.7E-9 – 2.7E-5
- Sr-89 – 2.7E-8 – 2.7E-5
- Sr-90* – 2.7E-9 – 2.7E-7
- Sr-91 – 2.7E-10 – 2.7E-6
- Sr-92 – 2.7E-10 – 2.7E-5
Hydrogen
Tantalum
- Ta-178 (long-lived) – 2.7E-10 – 2.7E-5
- Ta-179 – 2.7E-8 – 2.7E-4
- Ta-182 – 2.7E-10 – 2.7E-7
Terbium
- Tb-157 – 2.7E-7 – 2.7E-4
- Tb-158 – 2.7E-10 – 2.7E-5
- Tb-160 – 2.7E-10 – 2.7E-5
Technetium
- Tc-95m – 2.7E-10 – 2.7E-5
- Tc-96 – 2.7E-10 – 2.7E-5
- Tc-96m – 2.7E-8 – 2.7E-4
- Tc-97 – 2.7E-8 – 2.7E-3
- Tc-97m – 2.7E-8 – 2.7E-4
- Tc-98 – 2.7E-10 – 2.7E-5
- Tc-99 – 2.7E-7 – 2.7E-4
- Tc-99m – 2.7E-9 – 2.7E-4
Tellurium
- Te-121 – 2.7E-10 – 2.7E-5
- Te-121m – 2.7E-9 – 2.7E-6
- Te-123m – 2.7E-9 – 2.7E-4
- Te-125m – 2.7E-8 – 2.7E-4
- Te-127 – 2.7E-8 – 2.7E-5
- Te-127m – 2.7E-8 – 2.7E-4
- Te-129 – 2.7E-9 – 2.7E-5
- Te-129m – 2.7E-8 – 2.7E-5
- Te-131m – 2.7E-10 – 2.7E-5
- Te-132 – 2.7E-9 – 2.7E-4
Thorium
- Th-227 – 2.7E-10 – 2.7E-7
- Th-228* – 2.7E-11 – 2.7E-7
- Th-229* – 2.7E-11 – 2.7E-8
- Th-230 – 2.7E-11 – 2.7E-7
- Th-231 – 2.7E-8 – 2.7E-4
- Th-232 – 2.7E-10 – 2.7E-7
- Th-234* – 2.7E-8 – 2.7E-6
- Th (nat)* – 2.7E-11 – 2.7E-8
Titanium
Thallium
- Tl-200 – 2.7E-10 – 2.7E-5
- Tl-201 – 2.7E-9 – 2.7E-5
- Tl-202 – 2.7E-9 – 2.7E-5
- Tl-204 – 2.7E-7 – 2.7E-7
Thulium
- Tm-167 – 2.7E-9 – 2.7E-5
- Tm-170 – 2.7E-8 – 2.7E-5
- Tm-171 – 2.7E-7 – 2.7E-3
Uranium
- U-230 (fast lung absorption)*,(d). – 2.7E-10 – 2.7E-6
- U-230 (medium lung absorption) (e). – 2.7E-10 – 2.7E-7
- U-230 (slow lung absorption) (f). – 2.7E-10 – 2.7E-7
- U-232 (fast lung absorption)*,(d). – 2.7E-11 – 2.7E-8
- U-232 (medium lung absorption) (e). – 2.7E-10 – 2.7E-7
- U-232 (slow lung absorption) (f). – 2.7E-10 – 2.7E-7
- U-233 (fast lung absorption) (d). – 2.7E-10 – 2.7E-7
- U-233 (medium lung absorption) (e). – 2.7E-9 – 2.7E-6
- U-233 (slow lung absorption) (f). – 2.7E-10 – 2.7E-6
- U-234 (fast lung absorption) (d). – 2.7E-10 – 2.7E-7
- U-234 (medium lung absorption) (e). – 2.7E-9 – 2.7E-6
- U-234 (slow lung absorption) (f). – 2.7E-10 – 2.7E-6
- U-235 (all lung absorption types)*,(d),(e),(f). – 2.7E-10 – 2.7E-7
- U-236 (fast lung absorption) (d). – 2.7E-10 – 2.7E-7
- U-236 (medium lung absorption) (e). – 2.7E-9 – 2.7E-6
- U-236 (slow lung absorption) (f). – 2.7E-10 – 2.7E-7
- U-238 (all lung absorption types)*,(d),(e),(f). – 2.7E-10 – 2.7E-7
- U (nat)* – 2.7E-11 – 2.7E-8
- U (enriched to 20% or less)(g). – 2.7E-11 – 2.7E-8
- U (dep) – 2.7E-11 – 2.7E-8
Vanadium
- V-48 – 2.7E-10 – 2.7E-6
- V-49 – 2.7E-7 – 2.7E-4
Tungsten
- W-178 – 2.7E-10 – 2.7E-5
- W-181 – 2.7E-8 – 2.7E-4
- W-185 – 2.7E-7 – 2.7E-4
- W-187 – 2.7E-9 – 2.7E-5
- W-188 – 2.7E-9 – 2.7E-6
Xenon
- Xe-122 – 2.7E-9 – 2.7E-2
- Xe-123 – 2.7E-9 – 2.7E-2
- Xe-127 – 2.7E-8 – 2.7E-6
- Xe-131m – 2.7E-7 – 2.7E-7
- Xe-133 – 2.7E-8 – 2.7E-7
- Xe-135 – 2.7E-8 – 2.7E-1
Yttrium
- Y-87 – 2.7E-10 – 2.7E-5
- Y-88 – 2.7E-10 – 2.7E-5
- Y-90 – 2.7E-8 – 2.7E-6
- Y-91 – 2.7E-8 – 2.7E-5
- Y-91m – 2.7E-9 – 2.7E-5
- Y-92 – 2.7E-9 – 2.7E-6
- Y-93 – 2.7E-9 – 2.7E-6
Ytterbium
- Yb-169 – 2.7E-9 – 2.7E-4
- Yb-175 – 2.7E-8 – 2.7E-4
Zinc
- Zn-65 – 2.7E-10 – 2.7E-5
- Zn-69 – 2.7E-7 – 2.7E-5
- Zn-69m – 2.7E-9 – 2.7E-5
Zirconium
- Zr-88 – 2.7E-9 – 2.7E-5
- Zr-93* – 2.7E-8 – 2.7E-4
- Zr-95 – 2.7E-10 – 2.7E-5
- Zr-97* – 2.7E-10 – 2.7E-6