<P> Intergovernmental consideration of a chemical and biological weapons ban was initiated in 1968 within the 18 - nation Disarmament Committee , which , after numerous changes of name and composition , became the Conference on Disarmament ( CD ) in 1984 . On 3 September 1992 the Conference on Disarmament submitted to the U.N. General Assembly its annual report , which contained the text of the Chemical Weapons Convention . The General Assembly approved the Convention on 30 November 1992 , and the U.N. Secretary - General then opened the Convention for signature in Paris on 13 January 1993 . The CWC remained open for signature until its entry into force on 29 April 1997 , 180 days after the deposit of the 65th instrument of ratification ( by Hungary ) . The convention augments the Geneva Protocol of 1925 for chemical weapons and includes extensive verification measures such as on - site inspections . It does not , however , cover biological weapons . </P>
<P> Intergovernmental consideration of a chemical and biological weapons ban was initiated in 1968 within the 18 - nation Disarmament Committee , which , after numerous changes of name and composition , became the Conference on Disarmament ( CD ) in 1984 . On 3 September 1992 the Conference on Disarmament submitted to the U.N. General Assembly its annual report , which contained the text of the Chemical Weapons Convention . The General Assembly approved the Convention on 30 November 1992 , and the U.N. Secretary - General then opened the Convention for signature in Paris on 13 January 1993 . The CWC remained open for signature until its entry into force on 29 April 1997 , 180 days after the deposit of the 65th instrument of ratification ( by Hungary ) . The convention augments the Geneva Protocol of 1925 for chemical weapons and includes extensive verification measures such as on - site inspections . It does not , however , cover biological weapons . </P>
when did the united nations ban chemical weapons
when did the united nations ban chemical weapons
1968
1968