ChemSpider 2D Image | VX (nerve agent) | C11H26NO2PS

VX (nerve agent)

  • Molecular FormulaC11H26NO2PS
  • Average mass267.368 Da
  • Monoisotopic mass267.142181 Da
  • ChemSpider ID36386

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VX (nerve agent) [Wiki]
50782-69-9 [RN]
Méthylphosphonothioate de S-[2-(diisopropylamino)éthyle] et de O-éthyle [French] [ACD/IUPAC Name]
Methylphosphonothioic Acid S-[2-[Bis(1-methylethyl)amino]ethyl] O-Ethyl Ester
O-Ethyl S-[2-(Diisopropylamino)ethyl]methylphosphonothioate
Phosphonothioic acid, P-methyl-, S-[2-[bis(1-methylethyl)amino]ethyl] O-ethyl ester [ACD/Index Name]
S-[2-(Diisopropylamino)ethyl] O-ethyl methylphosphonothioate [ACD/IUPAC Name]
S-[2-(Diisopropylamino)ethyl]-O-ethyl-methylphosphonothioat [German] [ACD/IUPAC Name]
S-[2-(dipropan-2-ylamino)ethyl] O-ethyl methylphosphonothioate
VX
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

BRN 1949015 [DBID]
CCRIS 3351 [DBID]
EA 1701 [DBID]
HSDB 6459 [DBID]
TX 60 [DBID]
  • Experimental Physico-chemical Properties
  • Gas Chromatography
    • Retention Index (Normal Alkane):

      1708 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 50782699; Active phase: Polydimethyl siloxane; Data type: Normal alkane RI; Authors: Staples, E.J., Creating a compound library for chemical warfare agents for the ZNose, 2006.) NIST Spectra nist ri
      1704 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column type: Capillary; CAS no: 50782699; Active phase: SE-54; Data type: Normal alkane RI; Authors: Tsunoda, N., The sarin incidents in Japan and mass spectrometry, J. MAss Spectrom. Soc. Japan, 53(3), 2005, 157-163.) NIST Spectra nist ri
      1667 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.20 mm; Column length: 25 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 40 C; End T: 270 C; End time: 15 min; Start time: 1 min; CAS no: 50782699; Active phase: DB-5; Carrier gas: Helium; Phase thickness: 0.33 um; Data type: Normal alkane RI; Authors: Savel'eva, E.I.; Zenkevich, I.G.; Radilov, A.S., Identification the Products of Chemical Neutralization of O-Isobutyl-S-(2-diethylaminoethyl)methylthiophosphonate in the Composition of Bitumen-Salt Matrices, Zh. Anal. Khim. (Rus.), 58(2), 2003, 135-145, In original 135-145.) NIST Spectra nist ri
      1713 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 250 C; End time: 10 min; Start time: 2 min; CAS no: 50782699; Active phase: SE-54; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Soderstrom, M.T.; Ketola, R.A.; Kostiainen, O., Identification of some nerve agent homologues and dialkyl methylphosphonates by gas chromatography/Fourier transform infrared spectrometry. Part II. Spectral search with the help of retention indices, Fresenius J. Anal. Chem., 352, 1995, 550-556., Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column type: Capillary; CAS no: 50782699; Active phase: 5 % Phenyl methyl siloxane; Data type: Normal alkane RI; Authors: OPCW, Conference of the States Parties C-I/DEC.64 (22 May 1997), 1997.) NIST Spectra nist ri
    • Retention Index (Linear):

      1664 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 280 C; End time: 10 min; Start time: 2 min; CAS no: 50782699; Active phase: OV-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Kostiainen, O., Gas Chromatography in Screening of Chemicals Related to the Chemical Weapons Convention, in Encyclopedia of Analytical Chemistry, Meyers, R.A., ed(s), John Wiley & Sons Ltd, Chichester, 2000, 963-979.) NIST Spectra nist ri
      1667 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 280 C; End time: 10 min; Start time: 2 min; CAS no: 50782699; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: D'agostino, P.A.; Provost, L.R.; Visentini, J., Analysis of O-Ethyl S-[2-(Diisopropylamino)ethyl] Methylphosphonothiolate (VX) by Capillary Column Gas Chromatography-Mass Spectrometry, J. Chromatogr., 402, 1987, 221-232.) NIST Spectra nist ri
      1664.1 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 300 C; End time: 5 min; Start time: 2 min; CAS no: 50782699; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: D'Agostino, P.A.; Provost, L.R., Gas chromatographic retention indices of chemical warfare agents and simulants, J. Chromatogr., 331, 1985, 47-54.) NIST Spectra nist ri
      1713 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 280 C; End time: 10 min; Start time: 1 min; CAS no: 50782699; Active phase: SE-54; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Kostiainen, O., Gas Chromatography in Screening of Chemicals Related to the Chemical Weapons Convention, in Encyclopedia of Analytical Chemistry, Meyers, R.A., ed(s), John Wiley & Sons Ltd, Chichester, 2000, 963-979.) NIST Spectra nist ri
      1705 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 280 C; End time: 10 min; Start time: 2 min; CAS no: 50782699; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: D'agostino, P.A.; Provost, L.R.; Visentini, J., Analysis of O-Ethyl S-[2-(Diisopropylamino)ethyl] Methylphosphonothiolate (VX) by Capillary Column Gas Chromatography-Mass Spectrometry, J. Chromatogr., 402, 1987, 221-232.) NIST Spectra nist ri
      1710.1 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 300 C; Start time: 2 min; CAS no: 50782699; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: D'Agostino, P.A.; Provost, L.R., Gas chromatographic retention indices of chemical warfare agents and simulants, J. Chromatogr., 331, 1985, 47-54.) NIST Spectra nist ri
      2275.3 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.32 mm; Column length: 15 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 50 C; End T: 250 C; End time: 5 min; Start time: 2 min; CAS no: 50782699; Active phase: DB-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: D'Agostino, P.A.; Provost, L.R., Gas chromatographic retention indices of chemical warfare agents and simulants, J. Chromatogr., 331, 1985, 47-54.) NIST Spectra nist ri

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

Density: 1.0±0.1 g/cm3
Boiling Point: 318.8±44.0 °C at 760 mmHg
Vapour Pressure: 0.0±0.7 mmHg at 25°C
Enthalpy of Vaporization: 56.0±3.0 kJ/mol
Flash Point: 146.6±28.4 °C
Index of Refraction: 1.470
Molar Refractivity: 73.3±0.3 cm3
#H bond acceptors: 3
#H bond donors: 0
#Freely Rotating Bonds: 8
#Rule of 5 Violations: 0
ACD/LogP: 2.02
ACD/LogD (pH 5.5): -1.19
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 1.00
ACD/LogD (pH 7.4): -0.43
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.23
Polar Surface Area: 65 Å2
Polarizability: 29.0±0.5 10-24cm3
Surface Tension: 33.7±3.0 dyne/cm
Molar Volume: 262.6±3.0 cm3

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  2.06
    Log Kow (Exper. database match) =  2.09
       Exper. Ref:  Munro,NB et al. (1999)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  321.20  (Adapted Stein & Brown method)
    Melting Pt (deg C):  43.45  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.00195  (Modified Grain method)
    MP  (exp database):  -39 deg C
    BP  (exp database):  300 deg C
    VP  (exp database):  7.00E-04 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  3161
       log Kow used: 2.09 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  3e+004 mg/L (25 deg C)
        Exper. Ref:  CRABTREE,EV & SARVER,EW (1977)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  91398 mg/L
    Wat Sol (Exper. database match) =  30000.00
       Exper. Ref:  CRABTREE,EV & SARVER,EW (1977)

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Aliphatic Amines
       Esters
       Esters (phosphate)

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   1.86E-009  atm-m3/mole
   Group Method:   Incomplete
   Exper Database: 8.20E-09  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  2.170E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  2.09  (exp database)
  Log Kaw used:  -6.475  (exp database)
      Log Koa (KOAWIN v1.10 estimate):  8.565
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.4150
   Biowin2 (Non-Linear Model)     :   0.0469
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.3535  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.1740  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :  -0.1187
   Biowin6 (MITI Non-Linear Model):   0.0079
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.9699
 Ready Biodegradability Prediction:   NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  0.0933 Pa (0.0007 mm Hg)
  Log Koa (Koawin est  ): 8.565
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.21E-005 
       Octanol/air (Koa) model:  9.02E-005 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.00116 
       Mackay model           :  0.00256 
       Octanol/air (Koa) model:  0.00716 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 156.4382 E-12 cm3/molecule-sec
      Half-Life =     0.068 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     0.820 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.00186 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  640.1
      Log Koc:  2.806 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.909 (BCF = 8.115)
       log Kow used: 2.09 (expkow database)

 Volatilization from Water:
    Henry LC:  8.2E-009 atm-m3/mole  (Henry experimental database)
    Half-Life from Model River: 1.168E+005  hours   (4865 days)
    Half-Life from Model Lake : 1.274E+006  hours   (5.307E+004 days)

 Removal In Wastewater Treatment:
    Total removal:               2.34  percent
    Total biodegradation:        0.10  percent
    Total sludge adsorption:     2.24  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.0417          1.64         1000       
   Water     24.8            900          1000       
   Soil      75              1.8e+003     1000       
   Sediment  0.107           8.1e+003     0          
     Persistence Time: 1.1e+003 hr




                    

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