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Registration Number
26369
Title
Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer
Participant(s)
Submitter
ex officio
Places/dates of conclusion
Place
Date
London
29/06/1990
EIF information
10 August 1992 , in accordance with article 2(1)
Authentic texts
Spanish
Russian
French
English
Chinese
Arabic
Attachments
ICJ information
Depositary
Secretary-General of the United Nations
Registration Date
ex officio 7 March 1991
Subject terms
Sciences
Montreal Protocol
Environment
Pollution
Agreement type
Multilateral
UNTS Volume Number
1598
Publication format
Full
Certificate Of Registration
Text document(s)
Volume In PDF
v1598.pdf
Map(s)
Corrigendum/Addendum/Note
Participant
Action
Date of Notification/Deposit
Date of Effect
Afghanistan
Accession
17/06/2004
15/09/2004
Albania
Accession
25/05/2006
23/08/2006
Algeria
Accession
20/10/1992
18/01/1993
Andorra
Accession
26/01/2009
26/04/2009
Angola
Accession
21/06/2011
19/09/2011
Antigua and Barbuda
Accession
23/02/1993
24/05/1993
Argentina
Ratification
04/12/1992
04/03/1993
Armenia
Accession
26/11/2003
24/02/2004
Australia
Acceptance
11/08/1992
09/11/1992
Austria
Ratification
11/12/1992
11/03/1993
Azerbaijan
Accession
12/06/1996
10/09/1996
Bahamas
Accession
04/05/1993
02/08/1993
Bahrain
Withdrawal of declaration
08/07/2021
Bahrain
Acceptance
23/12/1992
23/03/1993
Bangladesh
Ratification
18/03/1994
16/06/1994
Barbados
Acceptance
20/07/1994
18/10/1994
Barbados
Acceptance of amendments
20/07/1994
18/10/1994
Belarus
Ratification
10/06/1996
08/09/1996
Belgium
Ratification
05/10/1993
03/01/1994
Belize
Accession
09/01/1998
09/04/1998
Benin
Ratification
21/06/2000
19/09/2000
Bhutan
Accession
23/08/2004
21/11/2004
Bolivia
Accession
03/10/1994
01/01/1995
Bosnia and Herzegovina
Accession
11/08/2003
09/11/2003
Botswana
Accession
13/05/1997
11/08/1997
Brazil
Acceptance
01/10/1992
30/12/1992
Brunei Darussalam
Accession
03/03/2009
01/06/2009
Bulgaria
Ratification
28/04/1999
27/07/1999
Burkina Faso
Ratification
10/06/1994
08/09/1994
Burundi
Acceptance
18/10/2001
16/01/2002
Cambodia
Accession
31/01/2007
01/05/2007
Cameroon
Acceptance
08/06/1992
06/09/1992
Canada
Acceptance
05/07/1990
10/08/1992
Cape Verde
Accession
31/07/2001
29/10/2001
Central African Republic
Ratification
29/05/2008
27/08/2008
Chad
Ratification
30/05/2001
28/08/2001
Chile
Acceptance
09/04/1992
10/08/1992
China
Communication
19/10/1999
China
Notification
06/06/1997
01/07/1997
China
Accession
14/06/1991
10/08/1992
Colombia
Accession
06/12/1993
06/03/1994
Comoros
Accession
31/10/1994
29/01/1995
Congo
Ratification
16/11/1994
14/02/1995
Cook Islands
Accession
22/12/2003
21/03/2004
Costa Rica
Ratification
11/11/1998
09/02/1999
Côte d'Ivoire
Ratification
18/05/1994
16/08/1994
Croatia
Ratification
15/10/1993
13/01/1994
Cuba
Ratification
19/10/1998
17/01/1999
Cyprus
Acceptance
11/10/1994
09/01/1995
Czech Republic
Accession
18/12/1996
18/03/1997
Democratic People's Republic of Korea
Accession
17/06/1999
15/09/1999
Denmark
Territorial application
24/10/2007
Denmark
Acceptance
20/12/1991
10/08/1992
Djibouti
Accession
30/07/1999
28/10/1999
Dominica
Accession
31/03/1993
29/06/1993
Dominican Republic
Accession
24/12/2001
24/03/2002
Ecuador
Ratification
23/02/1993
24/05/1993
Egypt
Ratification
13/01/1993
13/04/1993
El Salvador
Accession
08/12/2000
08/03/2001
Equatorial Guinea
Accession
11/07/2007
09/10/2007
Eritrea
Accession
05/07/2005
03/10/2005
Estonia
Ratification
12/04/1999
11/07/1999
Ethiopia
Ratification
25/11/2009
23/02/2010
European Economic Community
Approval
20/12/1991
10/08/1992
Fiji
Accession
09/12/1994
09/03/1995
Finland
Acceptance
20/12/1991
10/08/1992
France
Approval
12/02/1992
10/08/1992
Gabon
Accession
04/12/2000
04/03/2001
Gambia
Ratification
13/03/1995
11/06/1995
Georgia
Accession
12/07/2000
10/10/2000
Germany
Ratification
27/12/1991
10/08/1992
Ghana
Ratification
24/07/1992
22/10/1992
Greece
Ratification
11/05/1993
09/08/1993
Grenada
Accession
07/12/1993
07/03/1994
Guatemala
Accession
21/01/2002
21/04/2002
Guinea
Accession
25/06/1992
23/09/1992
Guinea-Bissau
Accession
12/11/2002
10/02/2003
Guyana
Acceptance
23/07/1999
21/10/1999
Haiti
Accession
29/03/2000
27/06/2000
Holy See
Accession
05/05/2008
03/08/2008
Honduras
Ratification
24/01/2002
24/04/2002
Hungary
Approval
09/11/1993
07/02/1994
Iceland
Ratification
16/06/1993
14/09/1993
India
Accession
19/06/1992
17/09/1992
Indonesia
Ratification
26/06/1992
24/09/1992
Iran (Islamic Republic of)
Acceptance
04/08/1997
02/11/1997
Iraq
Accession
25/06/2008
23/09/2008
Ireland
Acceptance
20/12/1991
10/08/1992
Israel
Ratification
30/06/1992
28/09/1992
Italy
Approval
21/02/1992
10/08/1992
Jamaica
Accession
31/03/1993
29/06/1993
Japan
Acceptance
04/09/1991
10/08/1992
Jordan
Ratification
12/11/1993
10/02/1994
Kazakhstan
Accession
26/07/2001
24/10/2001
Kenya
Ratification
27/09/1994
26/12/1994
Kiribati
Accession
09/08/2004
07/11/2004
Kuwait
Accession
22/07/1994
Kuwait
Acceptance of amendments
22/07/1994
29/10/1994
Kyrgyzstan
Ratification
13/05/2003
11/08/2003
Lao People's Democratic Republic
Accession
28/06/2006
26/09/2006
Latvia
Accession
02/11/1998
31/01/1999
Lebanon
Accession
31/03/1993
29/06/1993
Lesotho
Accession
15/04/2010
14/07/2010
Liberia
Accession
15/01/1996
14/04/1996
Libyan Arab Jamahiriya
Ratification
12/07/2001
10/10/2001
Liechtenstein
Ratification
24/03/1994
22/06/1994
Lithuania
Ratification
03/02/1998
04/05/1998
Luxembourg
Ratification
20/05/1992
18/08/1992
Madagascar
Accession
16/01/2002
16/04/2002
Malawi
Acceptance
08/02/1994
09/05/1994
Malaysia
Accession
16/06/1993
14/09/1993
Maldives
Ratification
31/07/1991
10/08/1992
Mali
Accession
28/10/1994
26/01/1995
Malta
Acceptance
04/02/1994
Marshall Islands
Accession
11/03/1993
09/06/1993
Mauritania
Acceptance
22/07/2005
20/10/2005
Mauritius
Accession
20/10/1992
18/01/1993
Mexico
Acceptance
11/10/1991
10/08/1992
Micronesia (Federated States of)
Accession
27/11/2001
25/02/2002
Monaco
Accession
12/03/1993
10/06/1993
Mongolia
Accession
07/03/1996
05/06/1996
Montenegro
Succession
23/10/2006
03/06/2006
Morocco
Accession
28/12/1995
27/03/1996
Morocco
Ratification
28/12/1995
27/03/1996
Mozambique
Accession
09/09/1994
08/12/1994
Myanmar
Accession
24/11/1993
22/02/1994
Namibia
Ratification
06/11/1997
04/02/1998
Nauru
Accession
10/09/2004
09/12/2004
Nepal
Accession
06/07/1994
04/10/1994
Nepal
Acceptance of amendments
06/07/1994
04/10/1994
Netherlands
Acceptance
20/12/1991
10/08/1992
New Zealand
Acceptance
01/10/1990
10/08/1992
Nicaragua
Ratification
13/12/1999
12/03/2000
Niger
Accession
11/01/1996
10/04/1996
Nigeria
Ratification
27/09/2001
26/12/2001
Niue
Accession
22/12/2003
21/03/2004
None
Acceptance
11/08/1992
Norway
Ratification
18/11/1991
10/08/1992
Oman
Accession
05/08/1999
03/11/1999
Pakistan
Accession
18/12/1992
18/03/1993
Palau
Accession
29/05/2001
27/08/2001
Panama
Ratification
10/02/1994
09/05/1994
Papua New Guinea
Accession
04/05/1993
02/08/1993
Paraguay
Accession
03/12/1992
03/03/1993
Peru
Accession
31/03/1993
29/06/1993
Philippines
Ratification
09/08/1993
07/11/1993
Poland
Accession
02/10/1996
31/12/1996
Portugal
Communication
21/10/1999
Portugal
Territorial application
15/02/1994
15/02/1994
Portugal
Ratification
24/11/1992
22/02/1993
Qatar
Accession
22/01/1996
21/04/1996
Republic of Korea
Accession
10/12/1992
10/03/1993
Republic of Moldova
Accession
25/06/2001
23/09/2001
Romania
Accession
27/01/1993
27/04/1993
Russian Federation
Acceptance
13/01/1992
10/08/1992
Rwanda
Accession
07/01/2004
06/04/2004
Samoa
Acceptance
04/10/2001
02/01/2002
San Marino
Accession
23/04/2009
22/07/2009
Sao Tome and Principe
Accession
19/11/2001
17/02/2002
Saudi Arabia
Accession
01/03/1993
30/05/1993
Senegal
Ratification
06/05/1993
04/08/1993
Serbia and Montenegro
Accession
22/03/2005
20/06/2005
Seychelles
Accession
06/01/1993
06/04/1993
Sierra Leone
Accession
29/08/2001
27/11/2001
Singapore
Accession
02/03/1993
31/05/1993
Slovakia
Approval
15/04/1994
14/07/1994
Slovenia
Acceptance
08/12/1992
08/03/1993
Solomon Islands
Accession
17/08/1999
15/11/1999
Somalia
Accession
01/08/2001
30/10/2001
South Africa
Acceptance
12/05/1992
10/08/1992
South Sudan
Accession
16/10/2012
14/01/2013
Spain
Acceptance
19/05/1992
17/08/1992
Sri Lanka
Accession
16/06/1993
14/09/1993
St. Kitts and Nevis
Ratification
08/07/1998
06/10/1998
St. Lucia
Accession
24/08/1999
22/11/1999
St. Vincent and the Grenadines
Accession
02/12/1996
02/03/1997
Sudan
Accession
02/01/2002
02/04/2002
Suriname
Accession
29/03/2006
27/06/2006
Swaziland
Accession
16/12/2005
16/03/2006
Sweden
Ratification
02/08/1991
10/08/1992
Switzerland
Ratification
16/09/1992
15/12/1992
Syrian Arab Republic
Accession
30/11/1999
28/02/2000
Tajikistan
Accession
07/01/1998
07/04/1998
Thailand
Ratification
25/06/1992
23/09/1992
The former Yugoslav Republic of Macedonia
Ratification
09/11/1998
07/02/1999
Timor-Leste
Accession
16/09/2009
15/12/2009
Togo
Acceptance
06/07/1998
04/10/1998
Tonga
Ratification
26/11/2003
24/02/2004
Trinidad and Tobago
Ratification
10/06/1999
08/09/1999
Tunisia
Accession
15/07/1993
13/10/1993
Turkey
Ratification
13/04/1995
12/07/1995
Turkmenistan
Accession
15/03/1994
13/06/1994
Tuvalu
Acceptance
31/08/2000
29/11/2000
Uganda
Ratification
20/01/1994
20/04/1994
Ukraine
Ratification
06/02/1997
07/05/1997
United Arab Emirates
Accession
16/02/2005
17/05/2005
United Kingdom of Great Britain and Northern Ireland
Territorial application
08/09/1993
United Kingdom of Great Britain and Northern Ireland
Notification
10/06/1997
United Kingdom of Great Britain and Northern Ireland
Territorial application
25/02/2021
United Kingdom of Great Britain and Northern Ireland
Territorial application
04/01/1995
04/01/1995
United Kingdom of Great Britain and Northern Ireland
Ratification
20/12/1991
10/08/1992
United Republic of Tanzania
Accession
16/04/1993
15/07/1993
United States of America
Ratification
18/12/1991
10/08/1992
Uruguay
Accession
16/11/1993
14/02/1994
Uzbekistan
Accession
10/06/1998
08/09/1998
Vanuatu
Acceptance
21/11/1994
19/02/1995
Venezuela
Ratification
29/07/1993
27/10/1993
Viet Nam
Accession
26/01/1994
26/04/1994
Yemen
Accession
23/04/2001
22/07/2001
Zaire
Accession
30/11/1994
28/02/1995
Zambia
Ratification
15/04/1994
14/07/1994
Zimbabwe
Ratification
03/06/1994
01/09/1994
Partial Publication
Limited Publication
In some specific instances, the UN Secretariat has the discretion not to publish certain elements of a treaty in the UNTS. In contrast to the Limited Publication Policy when the full text of an agreement may not be reproduced in the UNTS in its entirety, the objective of applying the partial publication method to a particular situation is to speed up the publishing effort by e.g. excluding certain highly technical and voluminous annexes, lengthy lists of products or schedules of service/product specifications which are otherwise available from the registering party. This is done to facilitate and make more cost –effective the translation effort and to expedite the publication of such agreements in the UNTS. The partial publication approach is a historically established practice which has been followed since the inception of the UNTS. For further information and assistance, if required, with a partially reproduced text(s), kindly contact the Treaty Section, OLA by phone at (212) 963-5047 or e-mail to
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Not published in print, in accordance with article 12(2) of the General Assembly regulations to give effect to Article 102 of the Charter of the United Nations, as amended, and the publication practice of the Secretariat. For further information, you may wish to contact the Treaty Section, OLA, via online
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