Appendix C to Part 20 - Quantities 1 of Licensed Material Requiring Labeling


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  • Appendix C to Part 20 - Quantities1 of Licensed Material Requiring Labeling

    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 (1.15 × 105 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

    [56 FR 23465, May 21, 1991; 56 FR 61352, Dec. 3, 1991. Redesignated and amended at 58 FR 67659, Dec. 22, 1993; 60 FR 20186, Apr. 25, 1995]