Since its entry into force in 1997, 186 states had signed and ratified to the Convention.

An additional 4 countries (Signatory States) have signed the CWC, but have not yet deposited their instrument of ratification.

There are 5 countries currently who have neither signed nor acceded to the CWC.

Note: As at 12 Feb 09.


For the full list of States Parties, please click here.