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Chemical Weapons Convention Scheduled Chemicals

The three schedules below 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, subparagraph 1 (a), these Schedules do not constitute a definition of chemical weapons.

Please note that 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

A. Toxic chemicals:

 

 

(1)

O-Alkyl (<C10, incl. cycloalkyl) alkyl
(Me, Et, n-Pr or i-Pr)-phosphonofluoridates

(CAS registry number)

 

e.g. Sarin: O-Isopropyl methylphosphonofluoridate
Soman: O-Pinacolyl methylphosphonofluoridate

(107-44-8)
(96-64-0)

(2)

O-Alkyl (<C10, incl. cycloalkyl) N,N-dialkyl
(Me, Et, n-Pr or i-Pr) phosphoramidocyanidates

 

 

e.g. Tabun: O-Ethyl N,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
corresponding alkylated or protonated salts

 

 

e.g. VX: O-Ethyl S-2-diisopropylaminoethyl
methyl phosphonothiolate

(50782-69-9)

(4)

Sulfur mustards:

 

 

2-Chloroethylchloromethylsulfide
Mustard gas: Bis(2-chloroethyl)sulfide
Bis(2-chloroethylthio)methane
Sesquimustard: 1,2-Bis(2-chloroethylthio)ethane
1,3-Bis(2-chloroethylthio)-n-propane
1,4-Bis(2-chloroethylthio)-n-butane
1,5-Bis(2-chloroethylthio)-n-pentane
Bis(2-chloroethylthiomethyl)ether
O-Mustard: Bis(2-chloroethylthioethyl)ether

(2625-76-5)
(505-60-2)
(63869-13-6)
(3563-36-8)
(63905-10-2)
(142868-93-7)
(142868-94-8)
(63918-90-1)
(63918-89-8)

(5)

Lewisites:

 

 

Lewisite 1: 2-Chlorovinyldichloroarsine
Lewisite 2: Bis(2-chlorovinyl)chloroarsine
Lewisite 3: Tris(2-chlorovinyl)arsine

(541-25-3)
(40334-69-8)
(40334-70-1)

(6)

Nitrogen mustards:

 

 

HN1: Bis(2-chloroethyl)ethylamine
HN2: Bis(2-chloroethyl)methylamine
HN3: Tris(2-chloroethyl)amine

(538-07-8)
(51-75-2)
(555-77-1)

(7)

Saxitoxin

(35523-89-8)

(8)

Ricin

(9009-86-3)

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)


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Schedule 2

A. Toxic chemicals:

 

 

(1)

Amiton: O,O-Diethyl S-[2-(diethylamino)ethyl]
phosphorothiolate
and corresponding alkylated or protonated salts

(78-53-5)

(2)

PFIB: 1,1,3,3,3-Pentafluoro-2-(trifluoromethyl)-1-propene

(382-21-8)

(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
Dimethyl methylphosphonate

(676-97-1)
(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

 

(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) aminoethyl-2-chlorides and corresponding protonated salts

 

(11)

N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethane-2-ols
and corresponding protonated salts

 

 

Exemptions: N,N-Dimethylaminoethanol
and corresponding protonated salts
N,N-Diethylaminoethanol
and corresponding protonated salts

(108-01-0)
(100-37-8)

(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)


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Schedule 3

A. Toxic chemicals:

 

 

(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)

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