I wrote that “I am unaware of any case in which the OPCW or any other international organization has required a state to disclose stocks of an unscheduled chemical .” I was referring to the requirement in the July OPCW EC decision about which I wrote the other day. Syria must

(b)  declare to the Secretariat all of the chemical weapons it currently possesses, including sarin, sarin precursors, and chlorine that is not intended for purposes not prohibited under the Convention, as well as chemical weapons production facilities and other related facilities;…

Based on what I wrote yesterday, I should have written that I was “unaware of any case it which the OPCW has required a state to disclose stocks of a specific unscheduled chemical.” Essentially, the CWC requires states to declare unschedule chemicals ” except where intended for purposes not prohibited under this Convention.” This is obviously similar to the July requirement, but doesn’t specify a chemical.