| Protocol for the Prohibition of the Use of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare. Geneva, 17 June 1925. | |||
| State Parties | Signature | Ratification / Accession 1) | Reservation / Declaration 2) |
| Afghanistan | 09.12.1986. | ||
| Albania | 20.12.1989. | ||
| Algeria | 27.01.1992. | 27.01.1992. (text) | |
| Angola | 08.11.1990. | 08.11.1990. (text) | |
| Antigua and Barbuda | 27.04.1989. | ||
| Argentina | 12.05.1969. | ||
| Australia | 24.05.1930 | ||
| Austria | 17.06.1925 | 09.05.1928 | |
| Bahrain | 09.12.1988. | 09.12.1988. (text) | |
| Bangladesh | 20.05.1989. | 20.05.1989. (text) | |
| Barbados | 16.07.1976. | ||
| Belgium | 17.06.1925 | 04.12.1928 | |
| Benin | 09.12.1986. | ||
| Bhutan | 19.02.1979. | ||
| Bolivia | 13.08.1985. | ||
| Brazil | 17.06.1925 | 28.08.1970. | |
| Bulgaria | 17.06.1925 | 07.03.1934 | |
| Burkina Faso | 03.03.1971. | ||
| Cambodia | 15.03.1983. | 15.03.1983. (text) | |
| Cameroon | 20.07.1989. | ||
| Canada | 17.06.1925 | 06.05.1930 | |
| Cape Verde | 15.10.1991. | ||
| Central African Republic | 31.07.1970. | ||
| Chile | 17.06.1925 | 02.07.1935 | |
| China | 13.07.1952. | 13.07.1952. (text) | |
| Costa Rica | 17.03.2009 | ||
| Côte d'Ivoire | 27.07.1970. | ||
| Croatia | 18.12.2006 | ||
| Cuba | 24.06.1966. | ||
| Cyprus | 12.12.1966. | ||
| Czech Republic | 17.06.1925 | 16.08.1938 | |
| Denmark | 17.06.1925 | 05.05.1930 | |
| Dominican Republic | 08.12.1970. | ||
| Ecuador | 16.09.1970. | ||
| Egypt | 17.06.1925 | 06.12.1928 | |
| Equatorial Guinea | 20.05.1989. | ||
| Estonia | 17.06.1925 | 28.08.1931 | |
| Ethiopia | 17.06.1925 | 07.10.1935 | |
| Fiji | 21.03.1973. | 21.03.1973. (text) | |
| Finland | 17.06.1925 | 26.06.1929 | |
| France | 17.06.1925 | 10.05.1926 | |
| Gambia | 05.11.1966. | ||
| Germany | 17.06.1925 | 25.04.1929 | |
| Ghana | 03.05.1967. | ||
| Greece | 17.06.1925 | 30.05.1931 | |
| Grenada | 03.01.1989. | ||
| Guatemala | 03.05.1983. | ||
| Guinea-Bissau | 20.05.1989. | ||
| Holy See | 18.10.1966. | ||
| Hungary | 11.10.1952. | ||
| Iceland | 02.11.1967. | ||
| India | 09.04.1930 | 09.04.1930 (text) | |
| Indonesia | 21.01.1971. | ||
| Iran (Islamic Rep.of) | 05.11.1929 | ||
| Iraq | 08.09.1931 | 08.09.1931 (text) | |
| Ireland | 29.08.1930 | ||
| Israel | 20.02.1969. | 20.02.1969. (text) | |
| Italy | 17.06.1925 | 03.04.1928 | |
| Jamaica | 28.07.1970. | ||
| Japan | 17.06.1925 | 21.05.1970. | |
| Jordan | 20.01.1977. | 20.01.1977. (text) | |
| Kenya | 06.07.1970. | ||
| Korea (Dem.People's Rep.) | 04.01.1989. | 04.01.1989. (text) | |
| Korea (Republic of) | 04.01.1989. | 04.01.1989. (text) | |
| Kuwait | 15.12.1971. | 15.12.1971. (text) | |
| Lao People's Dem.Rep. | 20.05.1989. | ||
| Latvia | 17.06.1925 | 03.06.1931 | |
| Lebanon | 17.04.1969. | ||
| Lesotho | 10.03.1972. | ||
| Liberia | 17.06.1927 | ||
| Libyan Arab Jamahiriya | 29.12.1971. | 29.12.1971. (text) | |
| Liechtenstein | 06.09.1991. | ||
| Lithuania | 17.06.1925 | 15.06.1933 | |
| Luxembourg | 17.06.1925 | 01.09.1936 | |
| Madagascar | 02.08.1967. | ||
| Malawi | 14.09.1970. | ||
| Malaysia | 10.12.1970. | ||
| Maldives | 27.12.1966. | ||
| Malta | 21.09.1964. | ||
| Mauritius | 12.03.1968. | ||
| Mexico | 28.05.1932 | ||
| Monaco | 06.01.1967. | ||
| Mongolia | 06.12.1968. | ||
| Morocco | 13.10.1970. | ||
| Nepal | 09.05.1969. | ||
| Netherlands | 17.06.1925 | 31.10.1930 | |
| New Zealand | 24.05.1930 | ||
| Nicaragua | 17.06.1925 | 05.10.1990. | |
| Nigeria | 15.10.1968. | 15.10.1968. (text) | |
| Niger | 05.04.1967. | ||
| Norway | 17.06.1925 | 27.07.1932 | |
| Pakistan | 15.04.1960. | 15.04.1960. (text) | |
| Panama | 04.12.1970. | ||
| Papua New Guinea | 02.09.1980. | 02.09.1980. (text) | |
| Paraguay | 22.10.1933 | ||
| Peru | 13.08.1985. | ||
| Philippines | 08.06.1973. | ||
| Poland | 17.06.1925 | 04.02.1929 | |
| Portugal | 17.06.1925 | 01.07.1930 | 01.07.1930 (text) |
| Qatar | 18.10.1976. | ||
| Romania | 17.06.1925 | 23.08.1929 | |
| Russian Federation | 05.04.1928 | ||
| Rwanda | 11.05.1964. | ||
| Saint Kitts and Nevis | 27.04.1989. | ||
| Saint Lucia | 21.12.1988. | ||
| Saint Vincent Grenadines | 24.03.1999 | ||
| Saudi Arabia | 27.01.1971. | ||
| Senegal | 15.06.1977. | ||
| Serbia (Republic of) | 03.06.2006 | ||
| Sierra Leone | 20.03.1967. | ||
| Slovakia | 17.06.1925 | 16.08.1938 | |
| Slovenia | 08.04.2008 | ||
| Solomon Islands | 01.06.1981. | 01.06.1981. (text) | |
| South Africa | 24.05.1930 | ||
| Spain | 17.06.1925 | 22.08.1929 | |
| Sri Lanka | 20.01.1954. | ||
| Sudan | 17.12.1980. | ||
| Swaziland | 23.07.1991. | ||
| Sweden | 17.06.1925 | 25.04.1930 | |
| Switzerland | 17.06.1925 | 12.07.1932 | |
| Syrian Arab Republic | 17.12.1968. | 17.12.1968. (text) | |
| Tanzania (United Rep.of) | 22.04.1963. | ||
| Thailand | 17.06.1925 | 06.06.1931 | |
| Togo | 05.04.1971. | ||
| Tonga | 19.07.1971. | ||
| Trinidad and Tobago | 31.08.1962. | ||
| Tunisia | 12.07.1967. | ||
| Turkey | 17.06.1925 | 05.10.1929 | |
| Uganda | 24.05.1965. | ||
| Ukraine | 07.08.2003 | ||
| United Kingdom | 17.06.1925 | 09.04.1930 | |
| United States of America | 17.06.1925 | 10.04.1975. | 10.04.1975. (text) |
| Uruguay | 17.06.1925 | 12.04.1977. | |
| Venezuela | 17.06.1925 | 08.02.1928 | |
| Viet Nam | 15.12.1980. | 15.12.1980. (text) | |
| Yemen | 17.03.1971. | 17.03.1971. (text) | |
1) Ratification : a treaty is generally open for signature for a certain time following the conference which has adopted it. However, a signature is not binding on a State unless it has been endorsed by ratification. The time limits having elapsed, the Conventions and the Protocols are no longer open for signature. The States which have not signed them may at any time accede or, in the appropriate circumstances, succeed to them. Accession : instead of signing and then ratifying a treaty, a State may become party to it by the single act called accession. | |||
| 2) Reservation / Declaration : unilateral statement, however phrased or named, made by a State when ratifying, acceding or succeeding to a treaty, whereby it purports to exclude or to modify the legal effect of certain provisions of the treaty in their application to that State (provided that such reservations are not incompatible with the object and purpose of the treaty). | |||