1C225 Category 1C

Boron enriched in the boron-10 ( 10B) isotope to greater than its natural isotopic abundance, as follows: elemental boron, compounds, mixtures containing boron, manufactures thereof, waste or scrap of any of the foregoing.

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

Reasons for control

NP: Nuclear nonproliferation
AT: Anti-terrorism

Country chart

Control	Column
AT applies to entire entry	AT 1
NP applies to entire entry	NP 1

List-based license exceptions

Exception	As stated in the entry
GBS	N/A
LVS	N/A

Items

Items: The list of items controlled is contained in the ECCN heading.

Related controls

See ECCNs 1E001 (“development” and “production”) and 1E201 (“use”) for technology for items controlled by this entry.

Notes

Technical Note: The natural isotopic abundance of boron-10 is approximately 18.5 weight percent (20 atom percent).

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