10 CFR Appendix B to Part 30: Appendix B to Part 30—Quantities 1 of Licensed Material Requiring Labeling

Material Microcuries

Americium-241 .01

Antimony-122 100

Antimony-124 10

Antimony-125 10

Arsenic-73 100

Arsenic-74 10

Arsenic-76 10

Arsenic-77 100

Barium-131 10

Barium-133 10

Barium-140 10

Bismuth-210 1

Bromine-82 10

Cadmium-109 10

Cadmium-115m 10

Cadmium-115 100

Calcium-45 10

Calcium-47 10

Carbon-14 100

Cerium-141 100

Cerium-143 100

Cerium-144 1

Cesium-131 1,000

Cesium-134m 100

Cesium-134 1

Cesium-135 10

Cesium-136 10

Cesium-137 10

Chlorine-36 10

Chlorine-38 10

Chromium-51 1,000

Cobalt-58m 10

Cobalt-58 10

Cobalt-60 1

Copper-64 100

Dysprosium-165 10

Dysprosium-166 100

Erbium-169 100

Erbium-171 100

Europium-152 9.2 h 100

Europium-152 13 yr 1

Europium-154 1

Europium-155 10

Fluorine-18 1,000

Gadolinium-153 10

Gadolinium-159 100

Gallium-72 10

Germanium-71 100

Gold-198 100

Gold-199 100

Hafnium-181 10

Holmium-166 100

Hydrogen-3 1,000

Indium-113m 100

Indium-114m 10

Indium-115m 100

Indium-115 10

Iodine-125 1

Iodine-126 1

Iodine-129 0.1

Iodine-131 1

Iodine-132 10

Iodine-133 1

Iodine-134 10

Iodine-135 10

Iridium-192 10

Iridium-194 100

Iron-55 100

Iron-59 10

Krypton-85 100

Krypton-87 10

Lanthanum-140 10

Lutetium-177 100

Manganese-52 10

Manganese-54 10

Manganese-56 10

Mercury-197m 100

Mercury-197 100

Mercury-203 10

Molybdenum-99 100

Neodymium-147 100

Neodymium-149 100

Nickel-59 100

Nickel-63 10

Nickel-65 100

Niobium-93m 10

Niobium-95 10

Niobium-97 10

Osmium-185 10

Osmium-191m 100

Osmium-191 100

Osmium-193 100

Palladium-103 100

Palladium-109 100

Phosphorus-32 10

Platinum-191 100

Platinum-193m 100

Platinum-193 100

Platinum-197m 100

Platinum-197 100

Plutonium-239 .01

Polonium-210 0.1

Potassium-42 10

Praseodymium-142 100

Praseodymium-143 100

Promethium-147 10

Promethium-149 10

Radium-226 .01

Rhenium-186 100

Rhenium-188 100

Rhodium-103m 100

Rhodium-105 100

Rubidium-86 10

Rubidium-87 10

Ruthenium-97 100

Ruthenium-103 10

Ruthenium-105 10

Ruthenium-106 1

Samarium-151 10

Samarium-153 100

Scandium-46 10

Scandium-47 100

Scandium-48 10

Selenium-75 10

Silicon-31 100

Silver-105 10

Silver-110m 1

Silver-111 100

Sodium-24 10

Strontium-85 10

Strontium-89 1

Strontium-90 0.1

Strontium-91 10

Strontium-92 10

Sulphur-35 100

Tantalum-182 10

Technetium-96 10

Technetium-97m 100

Technetium-97 100

Technetium-99m 100

Technetium-99 10

Tellurium-125m 10

Tellurium-127m 10

Tellurium-127 100

Tellurium-129m 10

Tellurium-129 100

Tellurium-131m 10

Tellurium-132 10

Terbium-160 10

Thallium-200 100

Thallium-201 100

Thallium-202 100

Thallium-204 10

Thorium (natural) 1 100

Thulium-170 10

Thulium-171 10

Tin-113 10

Tin-125 10

Tungsten-181 10

Tungsten-185 10

Tungsten-187 100

Uranium (natural) 2 100

Uranium-233 .01

Uranium-234—Uranium-235 .01

Vanadium-48 10

Xenon-131m 1,000

Xenon-133 100

Xenon-135 100

Ytterbium-175 100

Yttrium-90 10

Yttrium-91 10

Yttrium-92 100

Yttrium-93 100

Zinc-65 10

Zinc-69m 100

Zinc-69 1,000

Zirconium-93 10

Zirconium-95 10

Zirconium-97 10

Any alpha emitting radionuclide not listed above or mixtures of alpha emitters of unknown composition .01

Any radionuclide other than alpha emitting radionuclides, not listed above or mixtures of beta emitters of unknown composition .1

1 Based on alpha disintegration rate of Th-232, Th-230 and their daughter products.

2 Based on alpha disintegration rate of U-238, U-234, and U-235.

Note:

For purposes of § 20.303, where there is involved a combination of isotopes in known amounts, the limit for the combination should be derived as follows: Determine, for each isotope in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific isotope when not in combination. The sum of such ratios for all the isotopes in the combination may not exceed “1” (i.e., “unity”).