Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p88
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 249580–252385

or devices containing any of the foregoing.
Note: 1C235 does not apply to a product or device containing less than 1.48 x 103 GBq (40 Ci) of tritium.
1. C. 236. Radionuclides appropriate for making neutron sources based on alpha‑n reaction (Actinum 225, Actinum 227, Californium 253, Curium 240, Curium 241, Curium 242, Curium 243, Curium 244, Einsteinium 253, Einsteinium 254, Gadolinium 148, Plutonium 236, Plutonium 238, Polonium 208, Polonium 209, Polonium 210, Radium 223, Thorium 227, Thorium 228, Uranium 230 or Uranium 232) in the following forms:
a. Elemental;
b. Compounds having a total activity of 37 GBq/kg (1 Ci/kg) or greater;
c. Mixtures having a total activity of 37 GBq/kg (1 Ci/kg) or greater;
d. Products or devices containing any of the foregoing.
Note: 1C236 does not apply to a product or device containing less than 3.7 GBq (100 millicuries) of activity.
1. C. 237. Radium‑226 (226Ra), radium‑226 alloys, radium‑226 compounds, mixtures containing radium‑226, manufactures therof, and products or devices containing any of the foregoing.
Note: 1C237 does not apply to the following:
a. Medical applicators;
b. A product or device containing less than 0.37 GBq (10 millicuries) of radium‑226.
1. C. 238. Chlorine trifluoride (ClF3).
1. C. 239. High explosives, other than those specified in the Munitions List, or substances or mixtures containing more than 2% by weight thereof, with a crystal density greater than 1.8 g/cm3 and having a detonation velocity greater than 8,000 m/s.
1. C. 240. Nickel powder and porous nickel metal, other than those specified by 0C005, as follows:
a. Nickel powder having both of the following characteristics:
1. A nickel purity content of 99.0% or greater by weight; and
2. A mean particle size of less than 10 micrometres measured by American Society for Testing and Materials (ASTM) B330 standard;
b. Porous nickel metal produced from materials specified by 1C240.a.
Note: 1C240 does not apply to the following:
a. Filamentary nickel powders;
b. Single porous nickel sheets with an area of 1,000 cm2 per sheet or less.
Technical Note:
1C240.b. refers to porous metal formed by compacting and sintering the materials in 1C240.a. to form a metal material with fine pores interconnected throughout the structure.
       N.B.: SEE 0C005 FOR NICKEL POWDERS SPECIALLY PREPARED FOR THE MANUFACTURE OF GASEOUS DIFFUSION BARRIERS.
1. C. 241. Rhenium, and alloys containing 90% by weight or more rhenium; and alloys of rhenium and tungsten containing 90% by weight or more of any combination of rhenium and tungsten, having both of the following characteristics:
a. In forms with a hollow cylindrical symmetry (including cylinder segments) with an inside diameter between 100 and 300 mm; and
b. A mass greater than 20kg.
1. C. 350. Chemicals, which may be