In force · As amended up to 2026-08
3. The request for an investigation of an alleged use of chemical weapons to be submitted to the Director-General, to the extent possible, should include the following information:
(a) The State Party on whose territory use of chemical weapons is alleged to have taken place;
(b) The point of entry or other suggested safe routes of access;
(c) Location and characteristics of the areas where chemical weapons are alleged to have been used;
(d) When chemical weapons are alleged to have been used;
(e) Types of chemical weapons believed to have been used;
(f) Extent of alleged use;
(g) Characteristics of the possible toxic chemicals;
(h) Effects on humans, animals and vegetation;
- (i) Request for specific assistance, if applicable.
3. The following criteria shall be taken into account in considering whether a toxic chemical or precursor, not listed in other Schedules, should be included in Schedule 3:
(a) It has been produced, stockpiled or used as a chemical weapon;
(b) It poses otherwise a risk to the object and purpose of this Convention because it possesses such lethal or incapacitating toxicity as well as other properties that might enable it to be used as a chemical weapon;
(c) It poses a risk to the object and purpose of this Convention by virtue of its importance in the production of one or more chemicals listed in Schedule 1 or Schedule 2, part B;
(d) It may be produced in large commercial quantities for purposes not prohibited under this Convention.
B. SCHEDULES OF CHEMICALS
The following Schedules list toxic chemicals and their precursors. For the purpose of implementing this Convention, these Schedules identify chemicals for the application of verification measures according to the provisions of the Verification Annex. Pursuant to Article II, sub-paragraph 1(a), these Schedules do not constitute a definition of chemical weapons.
(Whenever reference is made to groups of dialkylated chemicals, followed by a list of alkyl groups in parentheses, all chemicals possible by all possible combinations of alkyl groups listed in the parentheses are considered as listed in the respective Schedule as long as they are not explicitly exempted. A chemical marked "*" on Schedule 2, part A, is subject to special thresholds for declaration and verification, as specified in Part VII of the Verification Annex.)
Schedule 1
3. Each State Party undertakes to destroy all Chemical Weapons it abandoned on the territory of another State Party, in accordance with the provisions of this Convention.
|Schedule 1|Schedule 1|Schedule 1|
|---|---|---|
|(CAS registry number)<br>ic chemicals:|||
|(1)|O-Alkyl(≤C10,incl.cycloalkyl)alkyl||
||(Me,Et,n-Pr or i-Pr)-phosphonofluoridates||
||e.g. Sarin: O-Isopropyl methylphosphonofluoridate|(107-44-8)|
||Soman: O-Pinacolyl methylphosphonofluoridate|(96-64-0)|
|(2)|O-Alkyl(≤C10,incl.cycloalkyl) N,N-dialkyl||
||(Me,Et,n-Pr or i-Pr) phosphoramidocyanidates||
||_e.g._Tabun: 0-EthylN,N-dimethyl||
||Phosphoramidocyanidate|(77-81-6)|
|(3)|O-Alkyl(H or≤C10,incl. cycloalkyl)S-2 dialkyl||
||(Me,Et,n-Pr or i-Pr)-aminoethyl alkyl||
||(Me, Et, n-Pr or i-Pr) phosphonothiolates and<br>correspondingalkylated orprotonated salts||
||_e.g._VX: O-Ethyl S-2 diisopropylaminoethyl||
||methylphosphonothiolate|(50782-69-9)|
|(4)|Sulfur mustards:||
||2-Chloroethylchloromethylsulfide|(2625-76-5)|
||Mustardgas:Bis(2-chloroethyl)sulfide|(505-60-2)|
||Bis(2-chloroethylthio)methane|(63869-13-6)|
||Sesquimustard:1,2-Bis(2-chloroethylthio)ethane|(3563-36-8)|
||1,3-Bis(2-chloroethylthio)-n-propane|(63905-10-2)|
||1,4-Bis(2-chloroethylthio)-n-butane|(142868-93-7)|
||1,5-Bis(2-chloroethylthio)-n-pentane|(142868-94-8)|
||Bis(2-chloroethylthiomethyl)ether|(63918-90-1)|
||O-Mustard:Bis(2-chloroethylthioethyl)ether|(63918-89-8)|
|(5)|Lewisites:||
||Lewisites 1:2-Chlorovinyldichloroarsine|(541-25-3)|
||Lewisites 2: Bis(2-chlorovinyl)chloroarsine|(40334-69-8)|
||Lewisites3:Tris(2-chlorovinyl)arsine|(40334-70-1)|
|(6)|Nitrogen mustards:||
||HN1:Bis(2-chloroethyl)ethylamine|(538-07-8)|
||HN2:Bis(2-chloroethyl)methylamine|(51-75-2)|
||HN 3: Tris(2-chloroethy1)amine|(555-77-1)|
|(7)|Saxitoxin|(35523-89-8)|
|(8)|Rich|(9009-86-3)|
3. "Precursor" means: Any chemical reactant which takes part at any stage in the production by whatever method of a toxic chemical. This includes any key component of a binary or multicomponent chemical system.
(For the purpose of implementing this Convention, precursors which have been identified for the application of verification measures are listed in Schedules contained in the Annex on Chemicals.)
A. Toxic chemicals:
3. All locations at which chemical weapons specified in paragraph 1 are stored or destroyed shall be subject to systematic verification through on-site inspection and monitoring with on-site instruments, in accordance with Part IV (A) of the Verification Annex.
|~~1~~[(13)|Р-alkyl (H or ≤C10, incl. cycloalkyl) N-(1-(dialkyl(≤C10, incl.<br>cycloalkyl)amino))alkylidene(H or ≤C10, incl. cycloalkyl)<br>phosphonamidic fluorides and corresponding alkylated or<br>protonated salts<br>e.g. N-(1-(di-n-decylamino)-n-decylidene)-P-<br>decylphosphonamidic fluoride<br>Methyl-(1-(diethylamino)ethylidene)phosphonamidofluoridate|(2387495-99-8)<br>(2387496-12-8)|
|---|---|---|
|(14)|O-alkyl (H or ≤C10, incl. cycloalkyl) N-(1-(dialkyl(≤C10, incl.<br>cycloalkyl)amino))alkylidene(H or ≤C10, incl. cycloalkyl)<br>phosphoramidofluoridates and corresponding alkylated or<br>protonated salts<br>e.g. O-n-Decyl N-(1-(di-n-decylamino)-n-decylidene)<br>phosphoramidofluoridate<br>Methyl (1-(diethylamino)ethylidene)phosphoramidofluoridate<br>Ethyl(1-(diethylamino)ethylidene)phosphoramidofluoridate|(2387496-00-4)<br>(2387496-04-8)<br>(2387496-06-0)<br>(2387496-14-0)|
|(15)|Methyl-(bis(diethylamino)methylene)phosphonamidofluoridate|(2387496-14-0)|
|(16)|Carbamates (quaternaries and bisquaternaries of<br>dimethylcarbamoyloxypyridines) Quaternaries of<br>dimethylcarbamoyloxypyridines:<br>1-[N,N-dialkyl(≤C10)-N-(n-(hydroxyl, cyano,<br>acetoxy)alkyl(≤C10))<br>ammonio]-n-[N-(3-dimethylcarbamoxy-α-picolinyl)-N,N-<br>dialkyl(≤C10) ammonio]decanedibromide (n=1-8)<br>e.g.1-[N,N-dimethyl-N-(2-hydroxy)ethylammonio]-10-[N-(3-dimethyl<br>carbamoxy-α-picolinyl)-N, N-dimethylammonio]decanedibromide<br>Bisquaternaries of dimethylcarbamoyloxypyridines:<br>1,n-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N,N-dialkyl(≤C10)<br>ammonio]-alkane-(2,(n-1)- dione) dibromide (n=2-12)<br>e.g. 1,10-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N-ethyl-N-<br>methylammonio] decane-2,9- dionedibromide|(77104-62-2)<br>(77104-00-8)]|
3. All chemical weapons production facilities specified in paragraph 1 shall be subject to systematic verification through on-site inspection and monitoring with on-site instruments in accordance with Part V of the Verification Annex.
1. Inserted by vide notification No S.O. 1459(E) (w.e.f. 7-6-2020).
B. Precursors:
- (9) Alkyl (Me, Et, n-Pr or i-Pr) phosphonyldifluorides e.g. DF: Methylphosphonyldifluoride (676-99-3)
- (10) O-Alkyl (H or ≤C10, incl. cycloalkyl) O-2-dialkyl
- (Me, Et, n-Pr or i-Pr)-aminoethyl alkyl
- (Me, Et, n-Pr or i-Pr) phosphonites and corresponding alkylated or protonated salts
- e.g. QL: O-Ethyl O-2-diisopropylaminoethyl methylphosphonite (57856-11-8)
- (11) Chlorosarin: O-Isopropyl methylphosphonochloridate (1445-76-7) (12) Chlorosoman: O-Pinacolyl methylphosphonochloridate (7040-57-5)
Schedule 2
A. Toxic chemicals:
- (1) Amiton: O,O-Diethyl S-[2-(diethylamino)ethyl]
- Phosphorothiolate (78-53-5) and corresponding alkylated or protonated salts
- (2) PFIB: 1,1,3,3,3-Pentafluoro-2-(trifluoromethyl)-1-propene (382-2 1-8) (3) BZ: 3-Quinuclidinyl benzilate (*) (6581-06-2)
- B. Precursors:
- (4) Chemicals, except for those listed in Schedule 1, containing a phosphorus atom to which is bonded one methyl, ethyl or propyl (normal or iso) group but not further carbon atoms,
- e.g. Methylphosphonyl dichloride (676-97-1) Dimethyl methylphosphonate (756-79-6)
- Exemption: Fonofos: O-Ethyl S-phenyl ethylphosphonothiolothionate (944-22-9)
- (5) N,N-Dialkyl (Me, Et, n-Pr or i-Pr) phosphoramidic dihalides (6) Dialkyl (Me, Et, n-Pr or i-Pr) N,N-dialkyl (Me, Et, n-Pr or i-Pr)-phosphoramidates
3. Each State Party shall subject chemicals listed in Schedule 1 (hereinafter referred to as "Schedule 1 chemicals") to the prohibitions on production, acquisition, retention, transfer and use as specified in Part VI of the Verification Annex. It shall subject Schedule 1 chemicals and facilities specified in Part VI of the Verification Annex to systematic verification through on-site inspection and monitoring with on-site instruments in accordance with that Part of the Verification Annex.
- (7) Arsenic trichloride (7784-34-1) (8) 2,2-Diphenyl-2-hydroxyacetic acid (76-93-7) (9) Quinuclidin-3-ol (1619-34-7)
- (10) N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethyle-2-chlorides and corresponding protonated salts
- (11) N,N-Dialkyl (Me, Et, n-Pr or i-Pr) amhoethane-2-ols and corresponding protonated salts Exemptions: N,N-Dimethylaminoethanol (108-01-0) and corresponding protonated salts N,N-Diethylaminoethanol (100-37-8)
- (10) N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethyle-2-chlorides and corresponding protonated salts
- (11) N,N-Dialkyl (Me, Et, n-Pr or i-Pr) amhoethane-2-ols and corresponding protonated salts
- and corresponding protonated salts
- (12) N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethane-2-thiols and corresponding protonated salts
- (13) Thiodiglycol: Bis(2-hydroxyethyl)sulfide (111-48-8) (14) Pinacolyl alcohol: 3,3-Dimethylbutan-2-ol (464-07-3)
Schedule 3
A. Toxic chemicals:
3. Each State Party, during the implementation of its obligations under this Convention, shall assign the highest priority to ensuring the safety of people and to protecting the environment, and shall cooperate as appropriate with other States Parties in this regard.
Relations between the State Party and the Organization
||(1)|Phosgene: Carbonyl dichloride|(75-44-5)|
|---|---|---|---|
||(2)|Cyanogen chloride|(506-77-4)|
||(3)|Hydrogen cyanide|(74-90-8)|
||(4)|Chloropicrin: Trichloronitromethane|(76-06-2)|
|B.|Precursors:|||
||(5)|Phosphorus oxychloride|(10025-87-3)|
||(6)|Phosphorus trichloride|(7719-12-2)|
||(7)|Phosphorus pentachloride|(10026-13-8)|
||(8)|Trimethyl phosphite|(121-45-9)|
||(9)|Triethyl phosphite|(122-52-1)|
||(10)|Dimethyl phosphite|(868-85-9)|
||(11)|Diethyl phosphite|(762-04-9)|
||(12)|Sulfur monochloride|(10025-67-9)|
||(13)|Sulfur dichloride|(10545-99-0)|
||(14)|Thionyl chloride|(7719-09-7)|
||(15)|Ethyldiethanolamine|(139-87-7)|
||(16)|Methyldiethanolamine|(105-59-9)|
||(17)|Triethanolamine|(102-71-6).|
ANNEX ON IMPLEMENTATION AND VERIFICATION ("VERIFICATION ANNEX")
3. The seat of the Headquarters of the Organization shall be The Hague, Kingdom of the Netherlands.
3. A State Party shall have the right to request the Executive Council to assist in clarifying any situation which may be considered ambiguous or which gives rise to a concern about the possible noncompliance of another State Party with this Convention. The Executive Council shall provide appropriate information in its possession relevant to such a concern.
3. Each State Party undertakes to facilitate, and shall have the right to participate in, the fullest possible exchange of equipment, material and scientific and technological information concerning means of protection against chemical weapons.
3. In cases where serious damage to the object and purpose of this Convention may result from activities prohibited under this Convention, in particular by Article I, the Conference may recommend collective measures to States Parties in conformity with international law.
3. The Executive Council may contribute to the settlement of a dispute by whatever means it deems appropriate, including offering its good offices, calling upon the States Parties to a dispute to start the settlement process of their choice and recommending a time-limit for any agreed procedure.
3. Amendments shall enter into force for all States Parties 30 days after deposit of the instruments of ratification or acceptance by all the States Parties referred to under sub-paragraph (b) below:
(a) When adopted by the Amendment Conference by a positive vote of a majority of all States Parties with no State Party casting a negative vote; and
(b) Ratified or accepted by all those States Parties casting a positive vote at the Amendment Conference.
3. The withdrawal of a State Party from this Convention shall not in any way affect the duty of States to continue fulfilling the obligations assumed under any relevant rules of international law, particularly the Geneva Protocol of 1925.
ARTICLE XVII
STATUS OF THE ANNEXES
The Annexes form an integral part of this Convention. Any reference to this Convention includes the Annexes.
ARTICLE XVIII
SIGNATURE
This Convention shall be open for signature for all States before its entry into force.
ARTICLE XIX
RATIFICATION
This Convention shall be subject to ratification by States Signatories according to their respective constitutional processes.
ARTICLE XX
ACCESSION
Any State which does not sign this Convention before its entry into force may accede to it at any time thereafter.
ARTICLE XXI
ENTRY INTO FORCE
3. "Challenge Inspection" means the inspection of any facility or location in the territory or in any other place under the jurisdiction or control of a State Party requested by another State Party pursuant to Article IX, paragraphs 8 to 25.
3. Verification activities under this Convention shall only be performed by designated inspectors and inspection assistants.
3. Each State Party shall conclude a facility agreement with the Organization for each facility declared and subject to on-site inspection pursuant to Articles IV, V, and VI, paragraph 3.
3. For each type of unfilled munitions, sub-munitions, devices or equipment, referred to in paragraph 1 (c) (ii), the information shall include:
(a) The number of items;
(b) The nominal fill volume per item;
(c) The intended chemical fill.
Declarations of chemical weapons pursuant to Article III, paragraph 1 (a) (iii)
3. A State Party which has on its territory old chemical weapons as defined in Article II, paragraph 5 (a), shall, not later than 30 days after this Convention enters into force for it, submit to the Technical Secretariat all available relevant information, including, to the extent possible, the location, type, quantity and the present condition of these old chemical weapons.
In the case of old chemical weapons as defined in Article II, paragraph 5 (b), the State Party shall submit to the Technical Secretariat a declaration pursuant to Article III, paragraph 1 (b) (i), including, to the extent possible, the information specified in Part IV(A), paragraphs 1 to 3, of this Annex.
3. A State Party that has transferred or received chemical weapons production equipment since 1 January 1946 shall declare these transfers and receipts pursuant to Article III, paragraph 1 (c) (iv), and in accordance with paragraph 5 below. When not all the specified information is available for transfer and receipt of such equipment for the period between 1 January 1946 and 1 January 1970, the State Party shall declare whatever information is still available to it and provide an explanation as to why it cannot submit a full declaration.
3. A State Party may transfer Schedule 1 chemicals outside its territory only to another State Party and only for research, medical, pharmaceutical or protective purposes in accordance with paragraph 2.
4. Chemicals transferred shall not be retransferred to a third State.
3. Initial and annual declarations are required for all plant sites that comprise one or more plant(s) which produced, processed or consumed during any of the previous three calendar years or is anticipated to produce, process or consume in the next calendar year more than:
(a) 1 kg of a chemical designated "*" in Schedule 2, part A;
(b) 100 kg of any other chemical listed in Schedule 2, part A; or
(c) 1 tonne of a chemical listed in Schedule 2, part B.
3. Initial and annual declarations are required for all plant sites that comprise one or more plants which produced during the previous calendar year or are anticipated to produce in the next calendar year more than 30 tonnes of a Schedule 3 chemical.
3. Each State Party shall submit its list of other chemical production facilities pursuant to paragraph 1 as part of its initial declaration not later than 30 days after this Convention enters into force for it. Each State Party shall, not later than 90 days after the beginning of each following calendar year, provide annually the information necessary to update the list.
3. Before submitting the inspection request for a challenge inspection, the State Party may seek confirmation from the Director-General that the Technical Secretariat is in a position to take immediate action on the request. If the Director-General cannot provide such confirmation immediately, he shall do so at the earliest opportunity, in keeping with the order of requests for confirmation. He shall also keep the State Party informed of when it is likely that immediate action can be taken. Should the DirectorGeneral reach the conclusion that timely action on requests can no longer be taken, he may ask the Executive Council to take appropriate action to improve the situation in the future.
Notification
3. The Director-General shall report annually to the Conference on the implementation of the regime governing the handling of confidential information by the Technical Secretariat.
Source: India Code