ECCN.DEV by Cancelli

1C236 Category 1C

Radionuclides appropriate for making neutron sources based on alpha-n reaction and products or devices containing such radionuclides (see List of Items Controlled).

Category 1: Special Materials and Related Equipment, Chemicals, “Microorganisms,” and “Toxins”

Reasons for control

Country chart

ControlColumn
AT applies to entire entryAT 1
NP applies to entire entryNP 1

List-based license exceptions

ExceptionAs stated in the entry
GBS N/A
LVS N/A

Items

  1. ECCN Controls: This entry does not control a product or device containing less than 3.7 GBq (100 millicuries) of activity.
  2. Items: a. Radionuclides identified in 1C236.a.1 in any of the forms described in 1C236.a.2:
  3. a.1. Radionuclides, as follows, appropriate for making neutron sources based on alpha-n reactions:
  4. a.1.a. Actinium 225;
  5. a.1.b. Actinium 227;
  6. a.1.c. Californium 253;
  7. a.1.d. Curium 240;
  8. a.1.e. Curium 241;
  9. a.1.f. Curium 242;
  10. a.1.g. Curium 243;
  11. a.1.h. Curium 244;
  12. a.1.i. Einsteinium 253;
  13. a.1.j. Einsteinium 254;
  14. a.1.k. Gadolinium 148;
  15. a.1.l. Plutonium 236;
  16. a.1.m. Plutonium 238;
  17. a.1.n. Polonium 208;
  18. a.1.o. Polonium 209;
  19. a.1.p. Polonium 210;
  20. a.1.q. Radium 223;
  21. a.1.r. Thorium 227;
  22. a.1.s. Thorium 228;
  23. a.1.t. Uranium 230;
  24. a.1.u. Uranium 232; and
  25. a.2. In any of the following forms:
  26. a.2.a. Elemental;
  27. a.2.b. Compounds having a total activity of 37 GBq (1 curie) per kg or greater; or
  28. a.2.c. Mixtures having a total activity of 37 GBq (1 curie) per kg or greater.
  29. b. Products or devices containing radionuclides identified in 1C236.a.1 in any of the forms described in 1C236.a.2.

Related controls

(1) See ECCNs 1E001 (“development” and “production”) and 1E201 (“use”) for technology for items controlled by this entry. (2) Certain alpha-emitting radionuclides are subject to the export licensing authority of the Nuclear Regulatory Commission (see 10 CFR part 110).

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.