ChemSpider 2D Image | Methamidophos | C2H8NO2PS

Methamidophos

  • Molecular FormulaC2H8NO2PS
  • Average mass141.129 Da
  • Monoisotopic mass141.001328 Da
  • ChemSpider ID3954

More details:



Featured data source



Validated by Experts, Validated by Users, Non-Validated, Removed by Users

10265-92-6 [RN]
Methamidophos [Wiki]
O,S-Dimethyl phosphoramidothioate [ACD/IUPAC Name]
O,S-Dimethylphosphoramidothioat [German] [ACD/IUPAC Name]
Phosphoramidothioate de O,S-diméthyle [French] [ACD/IUPAC Name]
Phosphoramidothioic acid, O,S-dimethyl ester [ACD/Index Name]
TAM
[10265-92-6]
[amino(methylsulfanyl)phosphoryl]oxymethane
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

BAY 71628 [DBID]
Bayer 71628 [DBID]
ENT 27396 [DBID]
33395_RIEDEL [DBID]
46342_RIEDEL [DBID]
AI3-27396 [DBID]
Bayer 5546 [DBID]
BRN 1098870 [DBID]
Caswell No. 378A [DBID]
CKB 1220 [DBID]
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  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Appearance:

      off-white crystalline solid Oxford University Chemical Safety Data (No longer updated) More details
    • Stability:

      Stable. Incompatible with strong oxidizing agents,copper, copper alloys. Oxford University Chemical Safety Data (No longer updated) More details
    • Toxicity:

      ORL-RAT LD50 8 mg kg-1, SKN-RAT LD50 50 mg kg-1, IHL-RAT LD50 9 mg kg-1, IPR-RAT LD50 15 mg kg-1, ORL-RBT LD50 10 mg kg-1 Oxford University Chemical Safety Data (No longer updated) More details
    • Safety:

      Danger Biosynth Q-201361
      GHS06; GHS09 Biosynth Q-201361
      H300; H311; H330; H400 Biosynth Q-201361
      P260; P264; P273; P280; P284; P301+P310 Biosynth Q-201361
      Safety glasses, gloves, good ventilation. Do not breathe dust or mistwhen using this product as an insecticide (or at any other time!). Oxford University Chemical Safety Data (No longer updated) More details
    • Drug Status:

      agricultural use Microsource [00330023]
    • Compound Source:

      synthetic Microsource [00330023]
  • Gas Chromatography
    • Retention Index (Kovats):

      1211 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Capillary; Start T: 130 C; CAS no: 10265926; Active phase: OV-1; Data type: Kovats RI; Authors: Erdmann, F.; Rochholz, G.; Schutz, H., Retention-indices on OV-1 of approximately 170 commonly used pesticides, Mikrochim. Acta, 106, 1992, 219-226.) NIST Spectra nist ri
      1228 (Program type: Isothermal; Col... (show more) umn class: Standard non-polar; Column type: Capillary; Start T: 160 C; CAS no: 10265926; Active phase: OV-1; Data type: Kovats RI; Authors: Erdmann, F.; Rochholz, G.; Schutz, H., Retention-indices on OV-1 of approximately 170 commonly used pesticides, Mikrochim. Acta, 106, 1992, 219-226.) NIST Spectra nist ri
      1204 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 15 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 100 C; End T: 270 C; CAS no: 10265926; Active phase: DB-1; Carrier gas: He; Data type: Kovats RI; Authors: Hall, G.L.; Whitehead, W.E.; Mourer, C.R.; Shibamoto, T., A new gas chromatographic retention index for pesticides and related compounds, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 9, 1986, 266-271.) NIST Spectra nist ri
      1245 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 15 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 100 C; End T: 270 C; CAS no: 10265926; Active phase: DB-5; Carrier gas: He; Data type: Kovats RI; Authors: Hall, G.L.; Whitehead, W.E.; Mourer, C.R.; Shibamoto, T., A new gas chromatographic retention index for pesticides and related compounds, J. Hi. Res. Chromatogr. & Chromatogr. Comm., 9, 1986, 266-271.) NIST Spectra nist ri
    • Retention Index (Normal Alkane):

      1225.9 (Program type: Complex; Column... (show more) class: Standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50C(1min) =>20C/min =>120C => 5C/min => 300C(10min); CAS no: 10265926; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Shimadzu Corporation, Analysis of 124 pesticides with capillary GC-FTD and GC-ECD, 2003.) NIST Spectra nist ri
      1235 (Program type: Complex; Column... (show more) class: Standard non-polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Description: 80C(1min)=> 10C/min =>150C=> 3C/min =>220C => 40C/min =>280C; CAS no: 10265926; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Ma, X.; Li, C.; Tao, C.; Liu, W.; Zheng, S., Multi-residue determination of 41 insecticides in garlic by gas chromatography and ion trap mass spectrometry using the selective ion storage technique, Rapid Commun. Mass Spectrom., 15, 2001, 15-19.) NIST Spectra nist ri
      1230 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50 0C(1 min) ^ 25 0C/min -> 125 0C ^ 10 0C/min -> 300 0C (10 min); CAS no: 10265926; Active phase: 5 % Phenyl methyl siloxane; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Department of Food Safety, Ministry of Health; Welfare, Analytical methods for residual compositional substances of agricultural chemicals, feed aadditives, and veterinary drugs in foods, 2006.) NIST Spectra nist ri
      1215.7 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 80C(1min) => 10C/min =>160C (5min) => 3C/min =>240C =>25C/min =>280C(10min); CAS no: 10265926; Active phase: DB-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Chu, X.-G.; Hu, X.-Z.; Yao, H.-Y., Determination of 266 pesticide residues in apple juice by matrix solid-phase dispersion and gas chromatography-mass selective detection, J. Chromatogr. A, 1063, 2005, 201-210.) NIST Spectra nist ri
      1243.5 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 57 C; End T: 290 C; End time: 15 min; Start time: 1.5 min; CAS no: 10265926; Active phase: HP-5; Carrier gas: He; Phase thickness: 0.2 um; Data type: Normal alkane RI; Authors: Haib, J.; Hofer, I.; Renaud, J.-M., Analysis of multiple pesticide residues in tobacco using pressurized liquid extraction, automated solid-phase extraction clean-up and gas chromatography-tandem mass spectrometry, J. Chromatogr. A, 1020, 2003, 173-187.) NIST Spectra nist ri
      1224.7 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50C(1min) =>20C/min =>120C => 5C/min => 300C(10min); CAS no: 10265926; Active phase: DB-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Shimadzu Corporation, Analysis of 124 pesticides with capillary GC-FTD and GC-ECD, 2003.) NIST Spectra nist ri
      1239.1 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 70 C (3.5 min) ^ 50 C/min -> 150 C ^ 5 C/min -> 180 C (5 min) ^ 4 C/min -> 205 C (5 min) ^ 4 C/min -> 300 C (5 min); CAS no: 10265926; Active phase: DB-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Martinez Vidal, J.L.; Arrebola, F.J.; Mateu-Sanchez, M., Application of gas chromatography-tandem mass spectrometry to the analysis of pesticides in fruits and vegetables, J. Chromatogr. A, 959, 2002, 203-213.) NIST Spectra nist ri
      1217.7 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 45 0C (2.66 min) ^ 40 0C/min -> 170 0C ^ 4 0C/min -> 220 0C ^ 20 0C/min -> 280 0C (15.72 min); CAS no: 10265926; Active phase: HP-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Frenzel, T.; Sochor, H.; Speer, K.; Uihlein, M., Rapid multimethod for verification and determination of toxic pesticides in whole blood by means of capillary GC-MS, J. Anal. Toxicol., 24, 2000, 365-371.) NIST Spectra nist ri
      1222.6 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 25 m; Column type: Capillary; Description: 100C(1min) => 30C/min=> 150C(2min) => 3C/min=> 205C => 10C/min =>260C(29min); CAS no: 10265926; Active phase: SE-54; Phase thickness: 0.33 um; Data type: Normal alkane RI; Authors: Stan, H.-J., Pesticide residue analysis in foodstuffs applying capillary gas chromatography with mass spectrometric detection State-of-the-art use of modified DFG-multimethod S19 and automated data evaluation, J. Chromatogr. A, 892, 2000, 347-377.) NIST Spectra nist ri
      1229.4 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Description: 50 C (1.13 min) ^ 30 C/min -> 150 C ^ 3 C/min -> 205 C ^ 10 C/min -> 250 C (20 min); CAS no: 10265926; Active phase: HP-5; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Cook, J.; Engel, M.; Wylie, P.; Quimby, B., Multiresidue screening of pesticides in foods using retention time locking, GC-AED, database search, and GC/MS identification, J. AOAC Int., 82(2), 1999, 313-326.) NIST Spectra nist ri
      1223.2 (Program type: Complex; Column... (show more) class: Semi-standard non-polar; Column diameter: 0.2 mm; Column length: 25 m; Column type: Capillary; Description: 85 0C (1 min) ^ 40 0C/min -> 150 0C (2 min) ^ 10 0C/min -> 280 0C (20 min); CAS no: 10265926; Active phase: HP-5; Carrier gas: He; Phase thickness: 0.33 um; Data type: Normal alkane RI; Authors: Holland, P.T.; McNaughton, D.E.; Malcolm, C.P., Multiresidue analysis of pesticides in wines by solid-phase extraction, J. AOAC Int., 77(1), 1994, 79-86.) NIST Spectra nist ri
      1245.2 (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: 15 K/min; Start T: 80 C; End T: 280 C; CAS no: 10265926; Active phase: DB-5; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Kwakman, P.J.M.; Vreuls, J.J.; Brinkman, U.A.Th.; Ghijsen, R.T., Determination of organophosphorus pesticides in aqueous samples by on-line membrane disk extraction and capillary gas chromatography, Chromatographia, 34(1/2), 1992, 41-47.) NIST Spectra nist ri
    • Retention Index (Linear):

      1228 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 70 C; End T: 300 C; CAS no: 10265926; Active phase: SLB-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Mondello, L.; Casilli, A.; Tranchida, P.Q.; Presti, M.L.; Dugo, P.; Dugo, G., Comprehensive gas chromatography coupled to mass spectrometry for the separation of pesticides in a very complex matrix, Anal. Bioanal. Chem., 389, 2007, 1755-1763.) NIST Spectra nist ri
      1241 (Program type: Ramp; Column cl... (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 70 C; End T: 300 C; CAS no: 10265926; Active phase: SLB-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Mondello, L.; Casilli, A.; Tranchida, P.Q.; Presti, M.L.; Dugo, P.; Dugo, G., Comprehensive gas chromatography coupled to mass spectrometry for the separation of pesticides in a very complex matrix, Anal. Bioanal. Chem., 389, 2007, 1755-1763.) NIST Spectra nist ri

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

Density: 1.3±0.1 g/cm3
Boiling Point: 208.7±23.0 °C at 760 mmHg
Vapour Pressure: 0.2±0.4 mmHg at 25°C
Enthalpy of Vaporization: 44.5±3.0 kJ/mol
Flash Point: 80.0±22.6 °C
Index of Refraction: 1.485
Molar Refractivity: 31.5±0.3 cm3
#H bond acceptors: 3
#H bond donors: 2
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: -0.82
ACD/LogD (pH 5.5): -0.56
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 11.83
ACD/LogD (pH 7.4): -0.56
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 11.83
Polar Surface Area: 87 Å2
Polarizability: 12.5±0.5 10-24cm3
Surface Tension: 44.4±3.0 dyne/cm
Molar Volume: 109.7±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) =  -0.93
    Log Kow (Exper. database match) =  -0.80
       Exper. Ref:  Tomlin,C (1997)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  222.87  (Adapted Stein & Brown method)
    Melting Pt (deg C):  14.56  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.068  (Modified Grain method)
    MP  (exp database):  46 deg C
    VP  (exp database):  3.53E-05 mm Hg at 25 deg C
    Subcooled liquid VP: 5.69E-005 mm Hg (25 deg C, exp database VP )

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  3.994e+005
       log Kow used: -0.80 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  1e+006 mg/L (20 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1e+006 mg/L
    Wat Sol (Exper. database match) =  1000000.00
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   8.68E-010  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  3.162E-008 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.80  (exp database)
  Log Kaw used:  -7.450  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  6.650
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6804
   Biowin2 (Non-Linear Model)     :   0.7320
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.8873  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6441  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.2931
   Biowin6 (MITI Non-Linear Model):   0.1810
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6769
 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):  0.00759 Pa (5.69E-005 mm Hg)
  Log Koa (Koawin est  ): 6.650
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.000395 
       Octanol/air (Koa) model:  1.1E-006 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.0141 
       Mackay model           :  0.0307 
       Octanol/air (Koa) model:  8.77E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  33.0760 E-12 cm3/molecule-sec
      Half-Life =     0.323 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     3.881 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.0224 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  3.848
      Log Koc:  0.585 

 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 = 0.500 (BCF = 3.162)
       log Kow used: -0.80 (expkow database)

 Volatilization from Water:
    Henry LC:  8.68E-010 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 8.013E+005  hours   (3.339E+004 days)
    Half-Life from Model Lake : 8.742E+006  hours   (3.642E+005 days)

 Removal In Wastewater Treatment:
    Total removal:               1.85  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  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       0.02            7.76         1000       
   Water     39.1            360          1000       
   Soil      60.8            720          1000       
   Sediment  0.0716          3.24e+003    0          
     Persistence Time: 572 hr




                    

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