On June 17, 2020 the Bureau of Industry and Security (BIS) issued a final rule via the Federal Register that goes into effect, immediately.
The final rule amends several Export Control Classification Numbers on the Commerce Control List. BIS amended ECCN 1C350 , by adding 24 new precursor chemicals to the CCL, including any mixtures in which 30% or more of its weight is composed of one of the newly controlled chemicals. BIS said these items were not previously listed on the CCL or controlled multilaterally but will be controlled by other Australia Group (AG) members.
BIS, consistent with the interagency process described in the Export Control Reform Act of 2018 (ECRA), identified the precursor chemicals addressed by this final rule as emerging technologies that are essential to U.S. national security and for which effective controls can be implemented. The inclusion of such items in this final rule is consistent with the requirements of ECRA and the decision of the AG to add such items to its common control lists, thereby making exports of such items subject to multilateral control (following the implementation of these changes by individual AG participating countries, including the United States).
All exports of the listed chemicals that now require a license as a result of this rule that were aboard a carrier to a port as of June 17 may continue to their destinations under the previous eligibility as long as they are exported, re-exported or transferred, before August 17.
A link to the Federal notice, 5.17.2020 is listed here and provides the listing of the 24 new chemicals, along with their CAS numbers for your review.