| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
|---|
| Afghanistan | | Acceptance: September 8, 2005 | December 8, 2005 | |
| Albania | | Acceptance: June 13, 2002 | September 13, 2002 | |
| Algeria | | Ratification: June 24, 1974 | September 24, 1974 | |
| Angola | | Ratification: November 7, 1991 | February 7, 1992 | |
| Argentina | | Ratification: January 11, 1973 | April 11, 1973 | |
| Armenia | | Declaration / Notification of Succession: September 5, 1993 | September 23, 1991 | |
| Australia | | Acceptance: October 30, 1989 | January 30, 1990 | Details |
| Azerbaijan | | Ratification: August 25, 1999 | November 25, 1999 | |
| Bahamas | | Ratification: October 9, 1997 | January 9, 1998 | |
| Bangladesh | | Ratification: December 9, 1987 | March 9, 1988 | |
| Barbados | | Acceptance: April 10, 2002 | July 10, 2002 | |
| Belarus | | Ratification: April 28, 1988 | July 28, 1988 | Details |
| Belgium | | Ratification: March 31, 2009 | June 30, 2009 | Details |
| Belize | | Ratification: January 26, 1990 | April 26, 1990 | |
| Bhutan | | Ratification: September 26, 2002 | December 26, 2002 | |
| Bolivia (Plurinational State of) | | Ratification: October 4, 1976 | January 4, 1977 | |
| Bosnia and Herzegovina | | Declaration / Notification of Succession: July 12, 1993 | March 6, 1992 | |
| Brazil | | Ratification: February 16, 1973 | May 16, 1973 | |
| Bulgaria | | Ratification: September 15, 1971 | April 24, 1972 | |
| Burkina Faso | | Ratification: April 7, 1987 | July 7, 1987 | |
| Cambodia | | Ratification: September 26, 1972 | December 26, 1972 | |
| Cameroon | | Ratification: May 24, 1972 | August 24, 1972 | |
| Canada | | Acceptance: March 28, 1978 | June 28, 1978 | |
| Central African Republic | | Ratification: February 1, 1972 | May 1, 1972 | |
| Chad | | Ratification: June 17, 2008 | September 17, 2008 | |
| China | | Acceptance: November 28, 1989 | February 28, 1990 | |
| Colombia | | Acceptance: May 24, 1988 | August 24, 1988 | |
| Costa Rica | | Ratification: March 6, 1996 | June 6, 1996 | |
| Côte d'Ivoire | | Ratification: October 30, 1990 | January 30, 1991 | |
| Croatia | | Declaration / Notification of Succession: July 6, 1992 | October 8, 1991 | |
| Cuba | | Ratification: January 30, 1980 | April 30, 1980 | Details |
| Cyprus | | Ratification: October 19, 1979 | January 19, 1980 | |
| Czech Republic | | Declaration / Notification of Succession: March 26, 1993 | January 1, 1993 | Details |
| Democratic People's Republic of Korea | | Ratification: May 13, 1983 | August 13, 1983 | |
| Democratic Republic of the Congo | | Ratification: September 23, 1974 | December 23, 1974 | |
| Denmark | | Ratification: March 26, 2003 | June 26, 2003 | Details |
| Dominican Republic | | Ratification: March 7, 1973 | June 7, 1973 | |
| Ecuador | | Acceptance: March 24, 1971 | April 24, 1972 | |
| Egypt | | Acceptance: April 5, 1973 | July 5, 1973 | |
| El Salvador | | Ratification: February 20, 1978 | May 20, 1978 | |
| Equatorial Guinea | | Ratification: June 17, 2010 | September 17, 2010 | |
| Estonia | | Ratification: October 27, 1995 | January 27, 1996 | |
| Finland | | Ratification: June 14, 1999 | September 14, 1999 | Details |
| France | | Ratification: January 7, 1997 | April 7, 1997 | Details |
| Gabon | | Acceptance: August 29, 2003 | November 29, 2003 | |
| Georgia | | Declaration / Notification of Succession: November 4, 1992 | April 9, 1991 | |
| Germany | | Ratification: November 30, 2007 | February 29, 2008 | |
| Greece | | Ratification: June 5, 1981 | September 5, 1981 | |
| Grenada | | Acceptance: September 10, 1992 | December 10, 1992 | |
| Guatemala | | Ratification: January 14, 1985 | April 14, 1985 | Details |
| Guinea | | Ratification: March 18, 1979 | June 18, 1979 | |
| Haiti | | Ratification: February 8, 2010 | May 8, 2010 | |
| Honduras | | Ratification: March 19, 1979 | June 19, 1979 | |
| Hungary | | Ratification: October 23, 1978 | January 23, 1979 | Details |
| Iceland | | Ratification: November 9, 2004 | February 9, 2005 | |
| India | | Ratification: January 24, 1977 | April 24, 1977 | |
| Iran (Islamic Republic of) | | Acceptance: January 27, 1975 | April 27, 1975 | |
| Iraq | | Acceptance: February 12, 1973 | May 12, 1973 | |
| Italy | | Ratification: October 2, 1978 | January 2, 1979 | |
| Japan | | Acceptance: September 9, 2002 | December 9, 2002 | |
| Jordan | | Ratification: March 15, 1974 | June 15, 1974 | |
| Kazakhstan | | Ratification: February 9, 2012 | May 9, 2012 | |
| Kuwait | | Acceptance: June 22, 1972 | September 22, 1972 | |
| Kyrgyzstan | | Acceptance: July 3, 1995 | October 3, 1995 | |
| Lebanon | | Ratification: August 25, 1992 | November 25, 1992 | |
| Libya | | Ratification: January 9, 1973 | April 9, 1973 | |
| Lithuania | | Ratification: July 27, 1998 | October 27, 1998 | |
| Madagascar | | Ratification: June 21, 1989 | September 21, 1989 | |
| Mali | | Ratification: April 6, 1987 | July 6, 1987 | |
| Mauritania | | Ratification: April 27, 1977 | July 27, 1977 | |
| Mauritius | | Acceptance: February 27, 1978 | May 27, 1978 | |
| Mexico | | Acceptance: October 4, 1972 | January 4, 1973 | Details |
| Mongolia | | Acceptance: May 23, 1991 | August 23, 1991 | |
| Montenegro | | Declaration / Notification of Succession: April 26, 2007 | June 3, 2006 | |
| Morocco | | Ratification: February 3, 2003 | May 3, 2003 | |
| Nepal | | Ratification: June 23, 1976 | September 23, 1976 | |
| Netherlands | | Acceptance: July 17, 2009 | October 17, 2009 | |
| New Zealand | | Acceptance: February 1, 2007 | May 1, 2007 | Details |
| Nicaragua | | Ratification: April 19, 1977 | July 19, 1977 | |
| Niger | | Ratification: October 16, 1972 | January 16, 1973 | |
| Nigeria | | Ratification: January 24, 1972 | April 24, 1972 | |
| Norway | | Ratification: February 16, 2007 | May 16, 2007 | Details |
| Oman | | Acceptance: June 2, 1978 | September 2, 1978 | |
| Pakistan | | Ratification: April 30, 1981 | July 30, 1981 | |
| Palestine | | Ratification: March 22, 2012 | June 22, 2012 | |
| Panama | | Acceptance: August 13, 1973 | November 13, 1973 | |
| Paraguay | | Ratification: November 9, 2004 | February 9, 2005 | |
| Peru | | Acceptance: October 24, 1979 | January 24, 1980 | |
| Poland | | Ratification: January 31, 1974 | April 30, 1974 | |
| Portugal | | Ratification: December 9, 1985 | March 9, 1986 | |
| Qatar | | Acceptance: April 20, 1977 | July 20, 1977 | |
| Republic of Korea | | Acceptance: February 14, 1983 | May 14, 1983 | |
| Republic of Moldova | | Ratification: September 14, 2007 | December 14, 2007 | Details |
| Romania | | Acceptance: December 6, 1993 | March 6, 1994 | |
| Russian Federation | | Ratification: April 28, 1988 | July 28, 1988 | Details |
| Rwanda | | Ratification: September 25, 2001 | December 25, 2001 | |
| Saudi Arabia | | Acceptance: September 8, 1976 | December 8, 1976 | |
| Senegal | | Ratification: December 9, 1984 | March 9, 1985 | |
| Serbia | | Declaration / Notification of Succession: September 11, 2001 | April 27, 1992 | |
| Seychelles | | Ratification: May 28, 2004 | August 28, 2004 | |
| Slovakia | | Declaration / Notification of Succession: March 31, 1993 | January 1, 1993 | Details |
| Slovenia | | Declaration / Notification of Succession: November 5, 1992 | June 26, 1991 | |
| South Africa | | Acceptance: December 18, 2003 | March 18, 2004 | |
| Spain | | Ratification: January 10, 1986 | April 10, 1986 | |
| Sri Lanka | | Acceptance: April 7, 1981 | July 7, 1981 | |
| Swaziland | | Acceptance: October 30, 2012 | January 30, 2013 | |
| Sweden | | Ratification: January 13, 2003 | April 13, 2003 | Details |
| Switzerland | | Acceptance: October 3, 2003 | January 3, 2004 | |
| Syrian Arab Republic | | Acceptance: February 21, 1975 | May 21, 1975 | |
| Tajikistan | | Ratification: August 28, 1992 | November 28, 1992 | |
| the former Yugoslav Republic of Macedonia | | Declaration / Notification of Succession: April 30, 1997 | November 17, 1991 | |
| Tunisia | | Acceptance: March 10, 1975 | June 10, 1975 | |
| Turkey | | Ratification: April 21, 1981 | July 21, 1981 | |
| Ukraine | | Acceptance: April 28, 1988 | July 28, 1988 | Details |
| United Kingdom | | Acceptance: August 1, 2002 | November 1, 2002 | Details |
| United Republic of Tanzania | | Ratification: August 2, 1977 | November 2, 1977 | |
| United States of America | | Acceptance: September 2, 1983 | December 2, 1983 | Details |
| Uruguay | | Ratification: August 9, 1977 | November 9, 1977 | |
| Uzbekistan | | Ratification: March 15, 1996 | June 15, 1996 | |
| Venezuela (Bolivarian Republic of) | | Acceptance: March 21, 2005 | June 21, 2005 | |
| Viet Nam | | Acceptance: September 20, 2005 | December 20, 2005 | |
| Zambia | | Ratification: June 21, 1985 | September 21, 1985 | |
| Zimbabwe | | Acceptance: May 30, 2006 | August 30, 2006 | |
