Chemical Weapons Convention/Schedules

Schedule 1

Schedule 1 Toxic Chemicals

Description	Examples and CAS numbers
O-Alkyl (<C10, incl. cycloalkyl) alkyl (Me, Et, n-Pr or i-Pr)-phosphonofluoridates	Sarin (GB): O-Isopropyl methylphosphonofluoridate (107-44-8); Soman (GD): O-Pinacolyl methylphosphonofluoridate (96-64-0)
O-Alkyl (<C10, incl. cycloalkyl) N,N-dialkyl (Me, Et, n-Pr or i-Pr) phosphoramidocyanidates	Tabun (GA): O-Ethyl N,N-dimethyl phosphoramidocyanidate (77-81-6)
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	VX: O-Ethyl S-2-diisopropylaminoethyl methyl phosphonothiolate (50782-69-9)
Sulfur mustards	2-Chloroethylchloromethylsulfide (2625-76-5); Mustard gas: 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)
Lewisites	Lewisite 1: 2-Chlorovinyldichloroarsine (541-25-3);Lewisite 2: Bis(2-chlorovinyl)chloroarsine (40334-69-8);Lewisite 3: Tris(2-chlorovinyl)arsine (40334-70-1)
Nitrogen mustards	HN1: Bis(2-chloroethyl)ethylamine (538-07-8); HN2: Bis(2-chloroethyl)methylamine (51-75-2); HN3: Tris(2-chloroethyl)amine (555-77-1)
Saxitoxin	Saxitoxin (35523-89-8)
Ricin	Ricin (9009-86-3)

Schedule 1 Precursors

Description	Examples and CAS numbers
Alkyl (Me, Et, n-Pr or i-Pr) phosphonyldifluorides	DF: Methylphosphonyl difluoride (676-99-3
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	QL: O-Ethyl O-2-diisopropylaminoethyl methylphosphonite (57856-11-8)
Chlorosarin	O-Isopropyl methylphosphonochloridate (1445-76-7)
Chlorosoman	O-Pinacolyl methylphosphonochloridate (7040-57-5)

Schedule 2

Schedule 2 Toxic Chemicals

Description	Examples and CAS numbers
Amiton	O,O-Diethyl S-[2-(diethylamino)ethyl] phosphorothiolate (78-53-5) and corresponding alkylated or protonated salts
PFIB	1,1,3,3,3-Pentafluoro-2-(trifluoromethyl)-1-propene (382-21-8)
BZ (chemical weapon)	3-Quinuclidinyl benzilate (*) (6581-06-2)

Schedule 2 Precursors

Description	Examples and CAS numbers
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,	Methylphosphonyl dichloride (676-97-1) ;Dimethyl methylphosphonate (756-79-6); exemption Fonofos: O-Ethyl S-phenyl ethylphosphonothiolothionate (944-22-9)
N,N-Dialkyl (Me, Et, n-Pr or i-Pr) phosphoramidic dihalides ,
Arsenic trichloride	(7784-34-1)
2,2-Diphenyl-2-hydroxyacetic acid	(76-93-7)
Quinuclidin-3-ol
N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethyl-2-chlorides and corresponding protonated salts	(
N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethane-2-ols and corresponding protonated salts	Exemptions: N,N-Dimethylaminoethanol (108-01-0); N,N-Diethylaminoethanol (100-37-8) and corresponding protonated salts;
N,N-Dialkyl (Me, Et, n-Pr or i-Pr) aminoethane-2-thiols and corresponding protonated salts	Example
Thiodiglycol	Bis(2-hydroxyethyl)sulfide (111-48-8)
Pinacolyl alcohol	3,3-Dimethylbutan-2-ol (464-07-3)
Class	Example

Schedule 3

Schedule 3 Toxic Chemicals

Description	Examples and CAS numbers
Phosgene	Carbonyl dichloride (75-44-5)
Cyanogen chloride	(506-77-4)
Chloropicrin	Trichloronitromethane (76-06-2)
Hydrogen cyanide	(74-90-8)

Schedule 3 Precursors

Description	Examples and CAS numbers
Phosphorus oxychloride	(10025-87-3)
Phosphorus trichloride	(7719-12-2)
Phosphorus pentachloride	(10026-13-8)
Trimethyl phosphite	(121-45-9)
Triethyl phosphite	(122-52-1)
Dimethyl phosphite	(868-85-9)
Diethyl phosphite	(762-04-9)
Sulfur monochloride	(10025-67-9)
Sulfur dichloride	(10545-99-0)
Thionyl chloride	(7719-09-7)
Ethyldiethanolamine	(139-87-7)
Methyldiethanolamine	(105-59-9)
Triethanolamine	(102-71-6)