The last five instruments to be deposited were:

• United Arab Emirates signed 2 February 1993 and ratified 28 November 2000
• Zambia signed 13 January 1993 and ratified 9 February 2001
• Dominica signed 2 August 1993 and ratified 12 February 2001
• Nauru signed 13 January 1993 and ratified 12 November 2001
• Uganda signed 14 January 1993 and ratified 30 November 2001

A complete chronological list of ratifications and accessions is included in this document.

CWC Signatures, Ratifications and Accessions in alphabetical order

For ease of reference, states that have ratified or acceded are numbered, while signatory states awaiting ratification are unnumbered and indented. States are in the alphabetical order used in United Nations documents.

• Afghanistan signed 14 January 1993
1. Albania signed 14 January 1993 and ratified 11 May 1994
2. Algeria signed 13 January 1993 and ratified 14 August 1995
3. Argentina signed 13 January 1993 and ratified 2 October 1995
4. Armenia signed 19 March 1993 and ratified 27 January 1995
5. Australia signed 13 January 1993 and ratified 6 May 1994
6. Austria signed 13 January 1993 and ratified 17 August 1995
7. Azerbaijan signed 13 January 1993 and ratified 29 February 2000
   • Bahamas signed 2 March 1994
8. Bahrain signed 24 February 1993 and ratified 28 April 1997
9. Bangladesh signed 14 January 1993 and ratified 25 April 1997
10. Belarus signed 14 January 1993 and ratified 11 July 1996
11. Belgium signed 13 January 1993 and ratified on 27 January 1997
12. Benin signed 14 January 1993 and ratified 14 May 1998
    • Bhutan signed 23 April 1997
13. Bolivia signed 14 January 1993 and ratified 14 August 1998
14. Bosnia and Herzegovina signed on 16 January 1997 and ratified 25 February 1997
15. Botswana acceded 31 August 1998
16. Brazil signed 13 January 1993 and ratified 13 March 1996
17. Brunei Darussalam signed 13 January 1993 and ratified 28 July 1997
18. Bulgaria signed 13 January 1993 and ratified 10 August 1994
19. Burkina Faso signed 14 January 1993 and ratified 8 July 1997
20. Burundi signed 15 January 1993 and ratified 4 September 1998
    • Cambodia signed 15 January 1993
21. Cameroon signed 14 January 1993 and ratified 16 September 1996
22. Canada signed 13 January 1993 and ratified 26 September 1995
    • Cape Verde signed 15 January 1993
    • Central African Republic signed 14 January 1993
    • Chad signed 11 October 1994
23. Chile signed 14 January 1993 and ratified 11 July 1996
24. China signed 13 January 1993 and ratified 25 April 1997
25. Colombia signed 13 January 1993 and ratified 5 April 2000 (becomes a State Party on 5 May 2000)
    • Comoros signed 13 January 1993
    • Congo signed 15 January 1993
26. Cook Islands signed 14 January 1993 and ratified 15 July 1994
27. Costa Rica signed 14 January 1993 and ratified 31 May 1996
28. Côte d'Ivoire signed 13 January 1993 and ratified 18 December 1995
29. Croatia signed 13 January 1993 and ratified 25 May 1995
30. Cuba signed 13 January 1993 and ratified 29 April 1997
31. Cyprus signed 13 January 1993 and ratified 28 August 1998
32. Czech Republic signed 14 January 1993 and ratified 6 March 1996
33. Denmark signed 14 January 1993 and ratified 13 July 1995
    • Djibouti signed 28 September 1993
34. Dominica signed 2 August 1993 and ratified 12 February 2001
    • Dominican Republic signed 13 January 1993
35. Ecuador signed 14 January 1993 and ratified 6 September 1995
36. El Salvador signed 14 January 1993 and ratified 30 October 1995
37. Equatorial Guinea signed 14 January 1993 and ratified 25 April 1997
38. Eritrea acceded 14 February 2000
39. Estonia signed 14 January 1993 and ratified 26 May 1999
40. Ethiopia signed 14 January 1993 and ratified 13 May 1996
41. Fiji signed 20 January 1993 and ratified 20 January 1993
42. Finland signed 14 January 1993 and ratified 7 February 1995
43. France signed 13 January 1993 and ratified 2 March 1995
44. Gabon signed 13 January 1993 and ratified 8 September 2000
45. Gambia signed 13 January 1993 and ratified 19 May 1998
46. Georgia signed 14 January 1993 and ratified 27 November 1995
47. Germany signed 13 January 1993 and ratified 12 August 1994
48. Ghana signed 14 January 1993 and ratified 9 July 1997
49. Greece signed 13 January 1993 and ratified 22 December 1994
    • Grenada signed 9 April 1997
    • Guatemala signed 14 January 1993
50. Guinea signed 14 January 1993 and ratified 9 June 1997
    • Guinea-Bissau signed 14 January 1993
51. Guyana signed 6 October 1993 and ratified 12 September 1997
    • Haiti signed 14 January 1993
52. Holy See signed 14 January 1993 and ratified 12 May 1999
    • Honduras signed 13 January 1993
53. Hungary signed 13 January 1993 and ratified 31 October 1996
54. Iceland signed 13 January 1993 and ratified 28 April 1997
55. India signed 14 January 1993 and ratified 3 September 1996
56. Indonesia signed 13 January 1993 and ratified 12 November 1998
57. Iran (Islamic Republic of) signed 13 January 1993 and ratified 3 November 1997
58. Ireland signed 14 January 1993 and ratified 24 June 1996
    • Israel signed 13 January 1993
59. Italy signed 13 January 1993 and ratified 8 December 1995
60. Jamaica signed 18 April 1997 and ratified 8 September 2000
61. Japan signed 13 January 1993 and ratified 15 September 1995
62. Jordan acceded 29 October 1997
63. Kazakhstan signed 14 January 1993 and ratified 23 March 2000 (becomes a State Party on 22 April 2000)
64. Kenya signed 15 January 1993 and ratified 25 April 1997
65. Kiribati acceded 7 September 2000
66. Kuwait signed 27 January 1993 and ratified 28 May 1997
    • Kyrgyzstan signed 22 February 1993
67. Lao People's Democratic Republic signed 12 May 1993 and ratified 25 February 1997
68. Latvia signed 6 May 1993 and ratified 23 July 1996
69. Lesotho signed 7 December 1994 and ratified 7 December 1994
    • Liberia signed 15 January 1993
70. Liechtenstein signed 21 July 1993 and ratified 24 November 1999 (becomes a State Party on 24 December)
71. Lithuania signed 13 January 1993 and ratified 15 April 1998
72. Luxembourg signed 13 January 1993 and ratified 15 April 1997
    • Madagascar signed 15 January 1993
73. Malawi signed 14 January 1993 and ratified 11 June 1998
74. Malaysia signed 13 January 1993 and ratified 20 April 2000
75. Maldives signed 1 October 1993 and ratified 31 May 1994
76. Mali signed 13 January 1993 and ratified 28 April 1997
77. Malta signed 13 January 1993 and ratified 28 April 1997
    • Marshall Islands signed 13 January 1993
78. Mauritania signed 13 January 1993 and ratified 9 February 1998
79. Mauritius signed 14 January 1993 and ratified 9 February 1993
80. Mexico signed 13 January 1993 and ratified 29 August 1994
81. Micronesia (Federated States of) signed 13 January 1993 and ratified 21 June 1999
82. Monaco signed 13 January 1993 and ratified 1 June 1995
83. Mongolia signed 14 January 1993 and ratified 17 January 1995
84. Morocco signed 13 January 1993 and ratified 28 December 1995
85. Mozambique acceded 15 August 2000
    • Myanmar signed 14 January 1993
86. Namibia signed 13 January 1993 and ratified 27 November 1995
87. Nauru signed 13 January 1993 and ratified 12 November 2001
88. Nepal signed 19 January 1993 and ratified 18 November 1997
89. Netherlands signed 14 January 1993 and ratified 30 June 1995
90. New Zealand signed 14 January 1993 and ratified 15 July 1996
91. Nicaragua signed 9 March 1993 and ratified 5 November 1999 (becomes a State Party on 5 December)
92. Niger signed 14 January 1993 and ratified 9 April 1997
93. Nigeria signed 13 January 1993 and ratified 20 May 1999
94. Norway signed 13 January 1993 and ratified 7 April 1994
95. Oman signed 2 February 1993 and ratified 8 February 1995
96. Pakistan signed 13 January 1993 and ratified 28 October 1997
97. Panama signed 16 June 93 and ratified 7 October 1998
98. Papua New Guinea signed 14 January 1993 and ratified 17 April 1996
99. Paraguay signed 14 January 1993 and ratified 1 December 1994
100. Peru signed 14 January 1993 and ratified 20 July 1995
101. Philippines signed 13 January 1993 and ratified 11 December 1996
102. Poland signed 13 January 1993 and ratified 23 August 1995
103. Portugal signed 13 January 1993 and ratified 10 September 1996
104. Qatar signed 1 February 1993 and ratified 3 September 1997
105. Republic of Korea signed 14 January 1993 and ratified 28 April 1997
106. Republic of Moldova signed 13 January 1993 and ratified 8 July 1996
107. Romania signed 13 January 1993 and ratified 15 February 1995
108. Russian Federation signed 13 January 1993 and ratified 5 November 1997
     • Rwanda signed 17 May 1993
     • Saint Kitts and Nevis signed 16 March 1994
109. Saint Lucia signed 29 March 1993 and ratified 9 April 1997
     • Saint Vincent and the Grenadines signed 20 September 1993
     • Samoa signed 14 January 1993
110. San Marino signed 13 January 1993 and ratified 10 December 1999
111. Saudi Arabia signed 20 January 1993 and ratified 9 August 1996
112. Senegal signed 13 January 1993 and ratified 20 July 1998
113. Seychelles signed 15 January 1993 and ratified 7 April 1993
     • Sierra Leone signed 15 January 1993
114. Singapore signed 14 January 1993 and ratified 21 May 1997
115. Slovak Republic signed 14 January 1993 and ratified 27 October 1995
116. Slovenia signed 14 January 1993 and ratified 11 June 1997
117. South Africa signed 14 January 1993 and ratified 13 September 1995
118. Spain signed 13 January 1993 and ratified 3 August 1994
119. Sri Lanka signed 14 January 1993 and ratified 19 August 1994
120. Sudan acceded 24 May 1999
121. Suriname signed 28 April 1997 and ratified 28 April 1997
122. Swaziland signed 23 September 1993 and ratified 20 November 1996
123. Sweden signed 13 January 1993 and ratified 17 June 1993
124. Switzerland signed 14 January 1993 and ratified 10 March 1995
125. Tajikistan signed 14 January 1993 and ratified 11 January 1995
     • Thailand signed 14 January 1993
126. The former Yugoslav Republic of Macedonia acceded 20 June 1997
127. Togo signed 13 January 1993 and ratified 23 April 1997
128. Trinidad and Tobago acceded 24 June 1997
129. Tunisia signed 13 January 1993 and ratified 15 April 1997
130. Turkey signed 14 January 1993 and ratified 12 May 1997
131. Turkmenistan signed 12 October 1993 and ratified 29 September 1994
132. Uganda signed 14 January 1993 and ratified 30 November 2001
133. Ukraine signed 13 January 1993 and ratified 16 October 1998
134. United Arab Emirates signed 2 February 1993 and ratified 28 November 2000
135. United Kingdom of Great Britain and Northern Ireland signed 13 January 1993 and ratified 13 May 1996
136. United Republic of Tanzania signed 25 February 1994 and ratified 25 June 1998
137. United States of America signed 13 January 1993 and ratified 25 April 1997
138. Uruguay signed 15 January 1993 and ratified 6 October 1994
139. Uzbekistan signed 24 November 1995 and ratified 23 July 1996
140. Venezuela signed 14 January 1993 and ratified 3 December 1997
141. Viet Nam signed 13 January 1993 and ratified 30 September 1998
142. Yemen signed 8 February 1993 and ratified 2 October 2000
143. Yugoslavia, Federal Republic of acceded 20 April 2000
     • Zaire signed 14 January 1993
144. Zambia signed 13 January 1993 and ratified 9 February 2001
145. Zimbabwe signed 13 January 1993 and ratified 25 April 1997

Ratifications and Accessions in chronological order: