1C228 Category 1C

Magnesium having both of the following characteristics (see List of Items Controlled).

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

Reasons for control

• NP: Nuclear nonproliferation
• AT: Anti-terrorism

Country chart

List-based license exceptions

Items

1. Items: a. Containing less than 200 parts per million by weight of metallic impurities other than calcium; and
2. b. Containing less than 10 parts per million by weight of boron.

Related controls

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

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