Learn About The Law
Get help with your legal needs
FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.
Code of Federal Regulations Title 10. Energy 10 CFR Pt. 20, App. C—Quantities 1] of Licensed Material Requiring Labeling
Current as of January 02, 2025 | Updated by Findlaw Staff
1
The quantities listed above were derived by taking 1/10 th of the most restrictive ALI listed in table 1, columns 1 and 2, of appendix B to §§ 20.1001–20.2401 of this part, rounding to the nearest factor of 10, and arbitrarily constraining the values listed between 0.001 and 1,000 MUCi. Values of 100 MUCi have been assigned for radionuclides having a radioactive half-life in excess of 109 years (except rhenium, 1000 MUCi) to take into account their low specific activity.
|
Radionuclide |
Quantity (µCi) |
|---|---|
|
Hydrogen-3 |
1,000 |
|
Beryllium-7 |
1,000 |
|
Beryllium-10 |
1 |
|
Carbon-11 |
1,000 |
|
Carbon-14 |
100 |
|
Fluorine-18 |
1,000 |
|
Sodium-22 |
10 |
|
Sodium-24 |
100 |
|
Magnesium-28 |
100 |
|
Aluminum-26 |
10 |
|
Silicon-31 |
1,000 |
|
Silicon-32 |
1 |
|
Phosphorus-32 |
10 |
|
Phosphorus-33 |
100 |
|
Sulfur-35 |
100 |
|
Chlorine-36 |
10 |
|
Chlorine-38 |
1,000 |
|
Chlorine-39 |
1,000 |
|
Argon-39 |
1,000 |
|
Argon-41 |
1,000 |
|
Potassium-40 |
100 |
|
Potassium-42 |
1,000 |
|
Potassium-43 |
1,000 |
|
Potassium-44 |
1,000 |
|
Potassium-45 |
1,000 |
|
Calcium-41 |
100 |
|
Calcium-45 |
100 |
|
Calcium-47 |
100 |
|
Scandium-43 |
1,000 |
|
Scandium-44m |
100 |
|
Scandium-44 |
100 |
|
Scandium-46 |
10 |
|
Scandium-47 |
100 |
|
Scandium-48 |
100 |
|
Scandium-49 |
1,000 |
|
Titanium-44 |
1 |
|
Titanium-45 |
1,000 |
|
Vanadium-47 |
1,000 |
|
Vanadium-48 |
100 |
|
Vanadium-49 |
1,000 |
|
Chromium-48 |
1,000 |
|
Chromium-49 |
1,000 |
|
Chromium-51 |
1,000 |
|
Manganese-51 |
1,000 |
|
Manganese-52m |
1,000 |
|
Manganese-52 |
100 |
|
Manganese-53 |
1,000 |
|
Manganese-54 |
100 |
|
Manganese-56 |
1,000 |
|
Iron-52 |
100 |
|
Iron-55 |
100 |
|
Iron-59 |
10 |
|
Iron-60 |
1 |
|
Cobalt-55 |
100 |
|
Cobalt-56 |
10 |
|
Cobalt-57 |
100 |
|
Cobalt-58m |
1,000 |
|
Cobalt-58 |
100 |
|
Cobalt-60m |
1,000 |
|
Cobalt-60 |
1 |
|
Cobalt-61 |
1,000 |
|
Cobalt-62m |
1,000 |
|
Nickel-56 |
100 |
|
Nickel-57 |
100 |
|
Nickel-59 |
100 |
|
Nickel-63 |
100 |
|
Nickel-65 |
1,000 |
|
Nickel-66 |
10 |
|
Copper-60 |
1,000 |
|
Copper-61 |
1,000 |
|
Copper-64 |
1,000 |
|
Copper-67 |
1,000 |
|
Zinc-62 |
100 |
|
Zinc-63 |
1,000 |
|
Zinc-65 |
10 |
|
Zinc-69m |
100 |
|
Zinc-69 |
1,000 |
|
Zinc-71m |
1,000 |
|
Zinc-72 |
100 |
|
Gallium-65 |
1,000 |
|
Gallium-66 |
100 |
|
Gallium-67 |
1,000 |
|
Gallium-68 |
1,000 |
|
Gallium-70 |
1,000 |
|
Gallium-72 |
100 |
|
Gallium-73 |
1,000 |
|
Germanium-66 |
1,000 |
|
Germanium-67 |
1,000 |
|
Germanium-68 |
10 |
|
Germanium-69 |
1,000 |
|
Germanium-71 |
1,000 |
|
Germanium-75 |
1,000 |
|
Germanium-77 |
1,000 |
|
Germanium-78 |
1,000 |
|
Arsenic-69 |
1,000 |
|
Arsenic-70 |
1,000 |
|
Arsenic-71 |
100 |
|
Arsenic-72 |
100 |
|
Arsenic-73 |
100 |
|
Arsenic-74 |
100 |
|
Arsenic-76 |
100 |
|
Arsenic-77 |
100 |
|
Arsenic-78 |
1,000 |
|
Selenium-70 |
1,000 |
|
Selenium-73m |
1,000 |
|
Selenium-73 |
100 |
|
Selenium-75 |
100 |
|
Selenium-79 |
100 |
|
Selenium-81m |
1,000 |
|
Selenium-81 |
1,000 |
|
Selenium-83 |
1,000 |
|
Bromine-74m |
1,000 |
|
Bromine-74 |
1,000 |
|
Bromine-75 |
1,000 |
|
Bromine-76 |
100 |
|
Bromine-77 |
1,000 |
|
Bromine-80m |
1,000 |
|
Bromine-80 |
1,000 |
|
Bromine-82 |
100 |
|
Bromine-83 |
1,000 |
|
Bromine-84 |
1,000 |
|
Krypton-74 |
1,000 |
|
Krypton-76 |
1,000 |
|
Krypton-77 |
1,000 |
|
Krypton-79 |
1,000 |
|
Krypton-81 |
1,000 |
|
Krypton-83m |
1,000 |
|
Krypton-85m |
1,000 |
|
Krypton-85 |
1,000 |
|
Krypton-87 |
1,000 |
|
Krypton-88 |
1,000 |
|
Rubidium-79 |
1,000 |
|
Rubidium-81m |
1,000 |
|
Rubidium-81 |
1,000 |
|
Rubidium-82m |
1,000 |
|
Rubidium-83 |
100 |
|
Rubidium-84 |
100 |
|
Rubidium-86 |
100 |
|
Rubidium-87 |
100 |
|
Rubidium-88 |
1,000 |
|
Rubidium-89 |
1,000 |
|
Strontium-80 |
100 |
|
Strontium-81 |
1,000 |
|
Strontium-83 |
100 |
|
Strontium-85m |
1,000 |
|
Strontium-85 |
100 |
|
Strontium-87m |
1,000 |
|
Strontium-89 |
10 |
|
Strontium-90 |
0.1 |
|
Strontium-91 |
100 |
|
Strontium-92 |
100 |
|
Yttrium-86m |
1,000 |
|
Yttrium-86 |
100 |
|
Yttrium-87 |
100 |
|
Yttrium-88 |
10 |
|
Yttrium-90m |
1,000 |
|
Yttrium-90 |
10 |
|
Yttrium-91m |
1,000 |
|
Yttrium-91 |
10 |
|
Yttrium-92 |
100 |
|
Yttrium-93 |
100 |
|
Yttrium-94 |
1,000 |
|
Yttrium-95 |
1,000 |
|
Zirconium-86 |
100 |
|
Zirconium-88 |
10 |
|
Zirconium-89 |
100 |
|
Zirconium-93 |
1 |
|
Zirconium-95 |
10 |
|
Zirconium-97 |
100 |
|
Niobium-88 |
1,000 |
|
Niobium-89m (66 min) |
1,000 |
|
Niobium-89 (122 min) |
1,000 |
|
Niobium-90 |
100 |
|
Niobium-93m |
10 |
|
Niobium-94 |
1 |
|
Niobium-95m |
100 |
|
Niobium-95 |
100 |
|
Niobium-96 |
100 |
|
Niobium-97 |
1,000 |
|
Niobium-98 |
1,000 |
|
Molybdenum-90 |
100 |
|
Molybdenum-93m |
100 |
|
Molybdenum-93 |
10 |
|
Molybdenum-99 |
100 |
|
Molybdenum-101 |
1,000 |
|
Technetium-93m |
1,000 |
|
Technetium-93 |
1,000 |
|
Technetium-94m |
1,000 |
|
Technetium-94 |
1,000 |
|
Technetium-96m |
1,000 |
|
Technetium-96 |
100 |
|
Technetium-97m |
100 |
|
Technetium-97 |
1,000 |
|
Technetium-98 |
10 |
|
Technetium-99m |
1,000 |
|
Technetium-99 |
100 |
|
Technetium-101 |
1,000 |
|
Technetium-104 |
1,000 |
|
Ruthenium-94 |
1,000 |
|
Ruthenium-97 |
1,000 |
|
Ruthenium-103 |
100 |
|
Ruthenium-105 |
1,000 |
|
Ruthenium-106 |
1 |
|
Rhodium-99m |
1,000 |
|
Rhodium-99 |
100 |
|
Rhodium-100 |
100 |
|
Rhodium-101m |
1,000 |
|
Rhodium-101 |
10 |
|
Rhodium-102m |
10 |
|
Rhodium-102 |
10 |
|
Rhodium-103m |
1,000 |
|
Rhodium-105 |
100 |
|
Rhodium-106m |
1,000 |
|
Rhodium-107 |
1,000 |
|
Palladium-100 |
100 |
|
Palladium-101 |
1,000 |
|
Palladium-103 |
100 |
|
Palladium-107 |
10 |
|
Palladium-109 |
100 |
|
Silver-102 |
1,000 |
|
Silver-103 |
1,000 |
|
Silver-104m |
1,000 |
|
Silver-104 |
1,000 |
|
Silver-105 |
100 |
|
Silver-106m |
100 |
|
Silver-106 |
1,000 |
|
Silver-108m |
1 |
|
Silver-110m |
10 |
|
Silver-111 |
100 |
|
Silver-112 |
100 |
|
Silver-115 |
1,000 |
|
Cadmium-104 |
1,000 |
|
Cadmium-107 |
1,000 |
|
Cadmium-109 |
1 |
|
Cadmium-113m |
0.1 |
|
Cadmium-113 |
100 |
|
Cadmium-115m |
10 |
|
Cadmium-115 |
100 |
|
Cadmium-117m |
1,000 |
|
Cadmium-117 |
1,000 |
|
Indium-109 |
1,000 |
|
Indium-110 (69.1min.) |
1,000 |
|
Indium-110 |
|
|
(4.9h) |
1,000 |
|
Indium-111 |
100 |
|
Indium-112 |
1,000 |
|
Indium-113m |
1,000 |
|
Indium-114m |
10 |
|
Indium-115m |
1,000 |
|
Indium-115 |
100 |
|
Indium-116m |
1,000 |
|
Indium-117m |
1,000 |
|
Indium-117 |
1,000 |
|
Indium-119m |
1,000 |
|
Tin-110 |
100 |
|
Tin-111 |
1,000 |
|
Tin-113 |
100 |
|
Tin-117m |
100 |
|
Tin-119m |
100 |
|
Tin-121m |
100 |
|
Tin-121 |
1,000 |
|
Tin-123m |
1,000 |
|
Tin-123 |
10 |
|
Tin-125 |
10 |
|
Tin-126 |
10 |
|
Tin-127 |
1,000 |
|
Tin-128 |
1,000 |
|
Antimony-115 |
1,000 |
|
Antimony-116m |
1,000 |
|
Antimony-116 |
1,000 |
|
Antimony-117 |
1,000 |
|
Antimony-118m |
1,000 |
|
Antimony-119 |
1,000 |
|
Antimony-120 (16min.) |
1,000 |
|
Antimony-120 (5.76d) |
100 |
|
Antimony-122 |
100 |
|
Antimony-124m |
1,000 |
|
Antimony-124 |
10 |
|
Antimony-125 |
100 |
|
Antimony-126m |
1,000 |
|
Antimony-126 |
100 |
|
Antimony-127 |
100 |
|
Antimony-128 (10.4min.) |
1,000 |
|
Antimony-128 (9.01h) |
100 |
|
Antimony-129 |
100 |
|
Antimony-130 |
1,000 |
|
Antimony-131 |
1,000 |
|
Tellurium-116 |
1,000 |
|
Tellurium-121m |
10 |
|
Tellurium-121 |
100 |
|
Tellurium-123m |
10 |
|
Tellurium-123 |
100 |
|
Tellurium-125m |
10 |
|
Tellurium-127m |
10 |
|
Tellurium-127 |
1,000 |
|
Tellurium-129m |
10 |
|
Tellurium-129 |
1,000 |
|
Tellurium-131m |
10 |
|
Tellurium-131 |
100 |
|
Tellurium-132 |
10 |
|
Tellurium-133m |
100 |
|
Tellurium-133 |
1,000 |
|
Tellurium-134 |
1,000 |
|
Iodine-120m |
1,000 |
|
Iodine-120 |
100 |
|
Iodine-121 |
1,000 |
|
Iodine-123 |
100 |
|
Iodine-124 |
10 |
|
Iodine-125 |
1 |
|
Iodine-126 |
1 |
|
Iodine-128 |
1,000 |
|
Iodine-129 |
1 |
|
Iodine-130 |
10 |
|
Iodine-131 |
1 |
|
Iodine-132m |
100 |
|
Iodine-132 |
100 |
|
Iodine-133 |
10 |
|
Iodine-134 |
1,000 |
|
Iodine-135 |
100 |
|
Xenon-120 |
1,000 |
|
Xenon-121 |
1,000 |
|
Xenon-122 |
1,000 |
|
Xenon-123 |
1,000 |
|
Xenon-125 |
1,000 |
|
Xenon-127 |
1,000 |
|
Xenon-129m |
1,000 |
|
Xenon-131m |
1,000 |
|
Xenon-133m |
1,000 |
|
Xenon-133 |
1,000 |
|
Xenon-135m |
1,000 |
|
Xenon-135 |
1,000 |
|
Xenon-138 |
1,000 |
|
Cesium-125 |
1,000 |
|
Cesium-127 |
1,000 |
|
Cesium-129 |
1,000 |
|
Cesium-130 |
1,000 |
|
Cesium-131 |
1,000 |
|
Cesium-132 |
100 |
|
Cesium-134m |
1,000 |
|
Cesium-134 |
10 |
|
Cesium-135m |
1,000 |
|
Cesium-135 |
100 |
|
Cesium-136 |
10 |
|
Cesium-137 |
10 |
|
Cesium-138 |
1,000 |
|
Barium-126 |
1,000 |
|
Barium-128 |
100 |
|
Barium-131m |
1,000 |
|
Barium-131 |
100 |
|
Barium-133m |
100 |
|
Barium-133 |
100 |
|
Barium-135m |
100 |
|
Barium-139 |
1,000 |
|
Barium-140 |
100 |
|
Barium-141 |
1,000 |
|
Barium-142 |
1,000 |
|
Lanthanum-131 |
1,000 |
|
Lanthanum-132 |
100 |
|
Lanthanum-135 |
1,000 |
|
Lanthanum-137 |
10 |
|
Lanthanum-138 |
100 |
|
Lanthanum-140 |
100 |
|
Lanthanum-141 |
100 |
|
Lanthanum-142 |
1,000 |
|
Lanthanum-143 |
1,000 |
|
Cerium-134 |
100 |
|
Cerium-135 |
100 |
|
Cerium-137m |
100 |
|
Cerium-137 |
1,000 |
|
Cerium-139 |
100 |
|
Cerium-141 |
100 |
|
Cerium-143 |
100 |
|
Cerium-144 |
1 |
|
Praseodymium-136 |
1,000 |
|
Praseodymium-137 |
1,000 |
|
Praseodymium-138m |
1,000 |
|
Praseodymium-139 |
1,000 |
|
Praseodymium-142m |
1,000 |
|
Praseodymium-142 |
100 |
|
Praseodymium-143 |
100 |
|
Praseodymium-144 |
1,000 |
|
Praseodymium-145 |
100 |
|
Praseodymium-147 |
1,000 |
|
Neodymium-136 |
1,000 |
|
Neodymium-138 |
100 |
|
Neodymium-139m |
1,000 |
|
Neodymium-139 |
1,000 |
|
Neodymium-141 |
1,000 |
|
Neodymium-147 |
100 |
|
Neodymium-149 |
1,000 |
|
Neodymium-151 |
1,000 |
|
Promethium-141 |
1,000 |
|
Promethium-143 |
100 |
|
Promethium-144 |
10 |
|
Promethium-145 |
10 |
|
Promethium-146 |
1 |
|
Promethium-147 |
10 |
|
Promethium-148m |
10 |
|
Promethium-148 |
10 |
|
Promethium-149 |
100 |
|
Promethium-150 |
1,000 |
|
Promethium-151 |
100 |
|
Samarium-141m |
1,000 |
|
Samarium-141 |
1,000 |
|
Samarium-142 |
1,000 |
|
Samarium-145 |
100 |
|
Samarium-146 |
1 |
|
Samarium-147 |
100 |
|
Samarium-151 |
10 |
|
Samarium-153 |
100 |
|
Samarium-155 |
1,000 |
|
Samarium-156 |
1,000 |
|
Europium-145 |
100 |
|
Europium-146 |
100 |
|
Europium-147 |
100 |
|
Europium-148 |
10 |
|
Europium-149 |
100 |
|
Europium-150 (12.62h) |
100 |
|
Europium-150 (34.2y) |
1 |
|
Europium-152m |
100 |
|
Europium-152 |
1 |
|
Europium-154 |
1 |
|
Europium-155 |
10 |
|
Europium-156 |
100 |
|
Europium-157 |
100 |
|
Europium-158 |
1,000 |
|
Gadolinium-145 |
1,000 |
|
Gadolinium-146 |
10 |
|
Gadolinium-147 |
100 |
|
Gadolinium-148 |
0.001 |
|
Gadolinium-149 |
100 |
|
Gadolinium-151 |
10 |
|
Gadolinium-152 |
100 |
|
Gadolinium-153 |
10 |
|
Gadolinium-159 |
100 |
|
Terbium-147 |
1,000 |
|
Terbium-149 |
100 |
|
Terbium-150 |
1,000 |
|
Terbium-151 |
100 |
|
Terbium-153 |
1,000 |
|
Terbium-154 |
100 |
|
Terbium-155 |
1,000 |
|
Terbium-156m (5.0h) |
1,000 |
|
Terbium-156m (24.4h) |
1,000 |
|
Terbium-156 |
100 |
|
Terbium-157 |
10 |
|
Terbium-158 |
1 |
|
Terbium-160 |
10 |
|
Terbium-161 |
100 |
|
Dysprosium-155 |
1,000 |
|
Dysprosium-157 |
1,000 |
|
Dysprosium-159 |
100 |
|
Dysprosium-165 |
1,000 |
|
Dysprosium-166 |
100 |
|
Holmium-155 |
1,000 |
|
Holmium-157 |
1,000 |
|
Holmium-159 |
1,000 |
|
Holmium-161 |
1,000 |
|
Holmium-162m |
1,000 |
|
Holmium-162 |
1,000 |
|
Holmium-164m |
1,000 |
|
Holmium-164 |
1,000 |
|
Holmium-166m |
1 |
|
Holmium-166 |
100 |
|
Holmium-167 |
1,000 |
|
Erbium-161 |
1,000 |
|
Erbium-165 |
1,000 |
|
Erbium-169 |
100 |
|
Erbium-171 |
100 |
|
Erbium-172 |
100 |
|
Thulium-162 |
1,000 |
|
Thulium-166 |
100 |
|
Thulium-167 |
100 |
|
Thulium-170 |
10 |
|
Thulium-171 |
10 |
|
Thulium-172 |
100 |
|
Thulium-173 |
100 |
|
Thulium-175 |
1,000 |
|
Ytterbium-162 |
1,000 |
|
Ytterbium-166 |
100 |
|
Ytterbium-167 |
1,000 |
|
Ytterbium-169 |
100 |
|
Ytterbium-175 |
100 |
|
Ytterbium-177 |
1,000 |
|
Ytterbium-178 |
1,000 |
|
Lutetium-169 |
100 |
|
Lutetium-170 |
100 |
|
Lutetium-171 |
100 |
|
Lutetium-172 |
100 |
|
Lutetium-173 |
10 |
|
Lutetium-174m |
10 |
|
Lutetium-174 |
10 |
|
Lutetium-176m |
1,000 |
|
Lutetium-176 |
100 |
|
Lutetium-177m |
10 |
|
Lutetium-177 |
100 |
|
Lutetium-178m |
1,000 |
|
Lutetium-178 |
1,000 |
|
Lutetium-179 |
1,000 |
|
Hafnium-170 |
100 |
|
Hafnium-172 |
1 |
|
Hafnium-173 |
1,000 |
|
Hafnium-175 |
100 |
|
Hafnium-177m |
1,000 |
|
Hafnium-178m |
0.1 |
|
Hafnium-179m |
10 |
|
Hafnium-180m |
1,000 |
|
Hafnium-181 |
10 |
|
Hafnium-182m |
1,000 |
|
Hafnium-182 |
0.1 |
|
Hafnium-183 |
1,000 |
|
Hafnium-184 |
100 |
|
Tantalum-172 |
1,000 |
|
Tantalum-173 |
1,000 |
|
Tantalum-174 |
1,000 |
|
Tantalum-175 |
1,000 |
|
Tantalum-176 |
100 |
|
Tantalum-177 |
1,000 |
|
Tantalum-178 |
1,000 |
|
Tantalum-179 |
100 |
|
Tantalum-180m |
1,000 |
|
Tantalum-180 |
100 |
|
Tantalum-182m |
1,000 |
|
Tantalum-182 |
10 |
|
Tantalum-183 |
100 |
|
Tantalum-184 |
100 |
|
Tantalum-185 |
1,000 |
|
Tantalum-186 |
1,000 |
|
Tungsten-176 |
1,000 |
|
Tungsten-177 |
1,000 |
|
Tungsten-178 |
1,000 |
|
Tungsten-179 |
1,000 |
|
Tungsten-181 |
1,000 |
|
Tungsten-185 |
100 |
|
Tungsten-187 |
100 |
|
Tungsten-188 |
10 |
|
Rhenium-177 |
1,000 |
|
Rhenium-178 |
1,000 |
|
Rhenium-181 |
1,000 |
|
Rhenium-182 (12.7h) |
1,000 |
|
Rhenium-182 (64.0h) |
100 |
|
Rhenium-184m |
10 |
|
Rhenium-184 |
100 |
|
Rhenium-186m |
10 |
|
Rhenium-186 |
100 |
|
Rhenium-187 |
1,000 |
|
Rhenium-188m |
1,000 |
|
Rhenium-188 |
100 |
|
Rhenium-189 |
100 |
|
Osmium-180 |
1,000 |
|
Osmium-181 |
1,000 |
|
Osmium-182 |
100 |
|
Osmium-185 |
100 |
|
Osmium-189m |
1,000 |
|
Osmium-191m |
1,000 |
|
Osmium-191 |
100 |
|
Osmium-193 |
100 |
|
Osmium-194 |
1 |
|
Iridium-182 |
1,000 |
|
Iridium-184 |
1,000 |
|
Iridium-185 |
1,000 |
|
Iridium-186 |
100 |
|
Iridium-187 |
1,000 |
|
Iridium-188 |
100 |
|
Iridium-189 |
100 |
|
Iridium-190m |
1,000 |
|
Iridium-190 |
100 |
|
Iridium-192 (73.8d) |
1 |
|
Iridium-192m (1.4min.) |
10 |
|
Iridium-194m |
10 |
|
Iridium-194 |
100 |
|
Iridium-195m |
1,000 |
|
Iridium-195 |
1,000 |
|
Platinum-186 |
1,000 |
|
Platinum-188 |
100 |
|
Platinum-189 |
1,000 |
|
Platinum-191 |
100 |
|
Platinum-193m |
100 |
|
Platinum-193 |
1,000 |
|
Platinum-195m |
100 |
|
Platinum-197m |
1,000 |
|
Platinum-197 |
100 |
|
Platinum-199 |
1,000 |
|
Platinum-200 |
100 |
|
Gold-193 |
1,000 |
|
Gold-194 |
100 |
|
Gold-195 |
10 |
|
Gold-198m |
100 |
|
Gold-198 |
100 |
|
Gold-199 |
100 |
|
Gold-200m |
100 |
|
Gold-200 |
1,000 |
|
Gold-201 |
1,000 |
|
Mercury-193m |
100 |
|
Mercury-193 |
1,000 |
|
Mercury-194 |
1 |
|
Mercury-195m |
100 |
|
Mercury-195 |
1,000 |
|
Mercury-197m |
100 |
|
Mercury-197 |
1,000 |
|
Mercury-199m |
1,000 |
|
Mercury-203 |
100 |
|
Thallium-194m |
1,000 |
|
Thallium-194 |
1,000 |
|
Thallium-195 |
1,000 |
|
Thallium-197 |
1,000 |
|
Thallium-198m |
1,000 |
|
Thallium-198 |
1,000 |
|
Thallium-199 |
1,000 |
|
Thallium-200 |
1,000 |
|
Thallium-201 |
1,000 |
|
Thallium-202 |
100 |
|
Thallium-204 |
100 |
|
Lead-195m |
1,000 |
|
Lead-198 |
1,000 |
|
Lead-199 |
1,000 |
|
Lead-200 |
100 |
|
Lead-201 |
1,000 |
|
Lead-202m |
1,000 |
|
Lead-202 |
10 |
|
Lead-203 |
1,000 |
|
Lead-205 |
100 |
|
Lead-209 |
1,000 |
|
Lead-210 |
0.01 |
|
Lead-211 |
100 |
|
Lead-212 |
1 |
|
Lead-214 |
100 |
|
Bismuth-200 |
1,000 |
|
Bismuth-201 |
1,000 |
|
Bismuth-202 |
1,000 |
|
Bismuth-203 |
100 |
|
Bismuth-205 |
100 |
|
Bismuth-206 |
100 |
|
Bismuth-207 |
10 |
|
Bismuth-210m |
0.1 |
|
Bismuth-210 |
1 |
|
Bismuth-212 |
10 |
|
Bismuth-213 |
10 |
|
Bismuth-214 |
100 |
|
Polonium-203 |
1,000 |
|
Polonium-205 |
1,000 |
|
Polonium-207 |
1,000 |
|
Polonium-210 |
0.1 |
|
Astatine-207 |
100 |
|
Astatine-211 |
10 |
|
Radon-220 |
1 |
|
Radon-222 |
1 |
|
Francium-222 |
100 |
|
Francium-223 |
100 |
|
Radium-223 |
0.1 |
|
Radium-224 |
0.1 |
|
Radium-225 |
0.1 |
|
Radium-226 |
0.1 |
|
Radium-227 |
1,000 |
|
Radium-228 |
0.1 |
|
Actinium-224 |
1 |
|
Actinium-225 |
0.01 |
|
Actinium-226 |
0.1 |
|
Actinium-227 |
0.001 |
|
Actinium-228 |
1 |
|
Thorium-226 |
10 |
|
Thorium-227 |
0.01 |
|
Thorium-228 |
0.001 |
|
Thorium-229 |
0.001 |
|
Thorium-230 |
0.001 |
|
Thorium-231 |
100 |
|
Thorium-232 |
100 |
|
Thorium-234 |
10 |
|
Thorium-natural |
100 |
|
Protactinium-227 |
10 |
|
Protactinium-228 |
1 |
|
Protactinium-230 |
0.1 |
|
Protactinium-231 |
0.001 |
|
Protactinium-232 |
1 |
|
Protactinium-233 |
100 |
|
Protactinium-234 |
100 |
|
Uranium-230 |
0.01 |
|
Uranium-231 |
100 |
|
Uranium-232 |
0.001 |
|
Uranium-233 |
0.001 |
|
Uranium-234 |
0.001 |
|
Uranium-235 |
0.001 |
|
Uranium-236 |
0.001 |
|
Uranium-237 |
100 |
|
Uranium-238 |
100 |
|
Uranium-239 |
1,000 |
|
Uranium-240 |
100 |
|
Uranium-natural |
100 |
|
Neptunium-232 |
100 |
|
Neptunium-233 |
1,000 |
|
Neptunium-234 |
100 |
|
Neptunium-235 |
100 |
|
Neptunium-236 (1.15x105 y) |
0.001 |
|
Neptunium-236 (22.5h) |
1 |
|
Neptunium-237 |
0.001 |
|
Neptunium-238 |
10 |
|
Neptunium-239 |
100 |
|
Neptunium-240 |
1,000 |
|
Plutonium-234 |
10 |
|
Plutonium-235 |
1,000 |
|
Plutonium-236 |
0.001 |
|
Plutonium-237 |
100 |
|
Plutonium-238 |
0.001 |
|
Plutonium-239 |
0.001 |
|
Plutonium-240 |
0.001 |
|
Plutonium-241 |
0.01 |
|
Plutonium-242 |
0.001 |
|
Plutonium-243 |
1,000 |
|
Plutonium-244 |
0.001 |
|
Plutonium-245 |
100 |
|
Americium-237 |
1,000 |
|
Americium-238 |
100 |
|
Americium-239 |
1,000 |
|
Americium-240 |
100 |
|
Americium-241 |
0.001 |
|
Americium-242m |
0.001 |
|
Americium-242 |
10 |
|
Americium-243 |
0.001 |
|
Americium-244m |
100 |
|
Americium-244 |
10 |
|
Americium-245 |
1,000 |
|
Americium-246m |
1,000 |
|
Americium-246 |
1,000 |
|
Curium-238 |
100 |
|
Curium-240 |
0.1 |
|
Curium-241 |
1 |
|
Curium-242 |
0.01 |
|
Curium-243 |
0.001 |
|
Curium-244 |
0.001 |
|
Curium-245 |
0.001 |
|
Curium-246 |
0.001 |
|
Curium-247 |
0.001 |
|
Curium-248 |
0.001 |
|
Curium-249 |
1,000 |
|
Berkelium-245 |
100 |
|
Berkelium-246 |
100 |
|
Berkelium-247 |
0.001 |
|
Berkelium-249 |
0.1 |
|
Berkelium-250 |
10 |
|
Californium-244 |
100 |
|
Californium-246 |
1 |
|
Californium-248 |
0.01 |
|
Californium-249 |
0.001 |
|
Californium-250 |
0.001 |
|
Californium-251 |
0.001 |
|
Californium-252 |
0.001 |
|
Californium-253 |
0.1 |
|
Californium-254 |
0.001 |
|
Any alpha emitting radionuclide not listed above or mixtures of alpha emitters of unknown composition |
0.001 |
|
Einsteinium-250 |
100 |
|
Einsteinium-251 |
100 |
|
Einsteinium-253 |
0.1 |
|
Einsteinium-254m |
1 |
|
Einsteinium-254 |
0.01 |
|
Fermium-252 |
1 |
|
Fermium-253 |
1 |
|
Fermium-254 |
10 |
|
Fermium-255 |
1 |
|
Fermium-257 |
0.01 |
|
Mendelevium-257 |
10 |
|
Mendelevium-258 |
0.01 |
|
Any radionuclide other than alpha emitting radionuclides not listed above, or mixtures of beta emitters of unknown composition |
0.01 |
|
Note: For purposes of §§ 20.1902(e), 20.1905(a), and 20.2201(a) where there is involved a combination of radionuclides in known amounts, the limit for the combination should be derived as follows: determine, for each radionuclide in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific radionuclide when not in combination. The sum of such ratios for all radionuclides in the combination may not exceed “1” (i.e., “unity”). |
Cite this article: FindLaw.com - Code of Federal Regulations Title 10. Energy 10 CFR Pt. 20, App. C—Quantities 1] of Licensed Material Requiring Labeling - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-10-energy/cfr-pt-10-20-app-c/
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.
Was this helpful?
Welcome to FindLaw's Cases & Codes
A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw’s Learn About the Law.
Latest Blog Posts
-
Massachusetts Attorney General Sues UHC for $100 Million, Alleges Medicaid Fraud
-
D.C. Circuit Blocks Trump’s Trans Ban for Troops, Not Recruits
-
Florida Sues OpenAI and CEO Sam Altman Over Violence Linked to Chatbots
-
Proposed Rule Gives Postal Service Power to Reject Some Absentee Ballots
-
Explore all
For Legal Professionals
Need to Find an Attorney?
Search our directory by legal issue
Enter information in one or both fields (Required)