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, subparagraph 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(CAS registry number)

A. Toxic 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: 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 (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)

(5) 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)

(6) 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)

(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 methylphosphonochlo-

  ridate (1445-76-7)

• (12) Chlorosoman: O-Pinacolyl methylphosphonochlo-

  ridate (7040-57-5)

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 (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

(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 (108-01-0)

  and corresponding protonated salts

  N,N-Diethylaminoethanol (100-37-8)

  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:

(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)