Document ID: chunk:federal_register_of_legislation:F2017L00081:reg:10:p6
Version: federal_register_of_legislation:F2017L00081
Segment Type: reg
Provision Reference: reg 10 (pt 6/6)
Character Range: 47260–48798

silica powder to dry beryllium powder will remain controlled;
 (3) subparagraph (c)(4)(ii)(A) does not apply to boron and boron carbide enriched with boron‑10 (20% or more of total boron‑10 content;
 (4) theoretical specific impulse (Isp) is calculated using standard conditions (1000 psi chamber pressure expanded to 14.7 psi) and measured in units of pound‑force‑seconds per pound‑mass (lbf‑s/lbm) or simplified to seconds (s). Calculations will be based on shifting equilibrium;
 (5) particle size is the mean particle diameter on a weight basis. Best industrial practices will be used in determining particle size and the controls may not be undermined by addition of larger or smaller sized material to shift the mean diameter;
 (l)‑(w) [Reserved]
 (x) Commodities, software, and technical data used in or with defence articles controlled in this category.
Note: Use of this paragraph is limited to exports of defence articles controlled in this category where the purchase documentation includes commodities, software, or technical data.
Note 1: To assist the exporter, an item has been categorised by the most common use. Also, where appropriate, references have been provided to the related controlled precursors.
Note 2: Chemical Abstract Service (CAS) registry numbers do not cover all the substances and mixtures controlled by this category. The numbers are provided as examples to assist the government agencies in the license review process and the exporter when completing their licence application and export documentation.