ChemSpider 2D Image | 1,2,4-Thiadiazole | C2H2N2S

1,2,4-Thiadiazole

  • Molecular FormulaC2H2N2S
  • Average mass86.116 Da
  • Monoisotopic mass85.993866 Da
  • ChemSpider ID4953929

More details:

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

1,2,4-Thiadiazol [German] [ACD/IUPAC Name]
1,2,4-Thiadiazole [ACD/Index Name] [ACD/IUPAC Name]
1,2,4-Thiadiazole [French] [ACD/Index Name] [ACD/IUPAC Name]
288-92-6 [RN]
T5NS DNJ [WLN]
104770 [Beilstein]

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Density: 1.3±0.1 g/cm3
Boiling Point: 127.6±23.0 °C at 760 mmHg
Vapour Pressure: 13.5±0.2 mmHg at 25°C
Enthalpy of Vaporization: 35.0±3.0 kJ/mol
Flash Point: 39.2±13.0 °C
Index of Refraction: 1.550
Molar Refractivity: 20.8±0.3 cm3
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: -0.15
ACD/LogD (pH 5.5): 0.35
ACD/BCF (pH 5.5): 1.08
ACD/KOC (pH 5.5): 36.82
ACD/LogD (pH 7.4): 0.35
ACD/BCF (pH 7.4): 1.08
ACD/KOC (pH 7.4): 36.82
Polar Surface Area: 54 Å2
Polarizability: 8.3±0.5 10-24cm3
Surface Tension: 55.9±3.0 dyne/cm
Molar Volume: 65.4±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) =  0.17

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  135.55  (Adapted Stein & Brown method)
    Melting Pt (deg C):  20.91  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  7.78  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  9.049e+004
       log Kow used: 0.17 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1.9555e+005 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Neutral Organics

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   1.77E-005  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  9.741E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.17  (KowWin est)
  Log Kaw used:  -3.140  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.310
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7066
   Biowin2 (Non-Linear Model)     :   0.8564
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0089  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7235  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4724
   Biowin6 (MITI Non-Linear Model):   0.5695
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6452
 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):  957 Pa (7.18 mm Hg)
  Log Koa (Koawin est  ): 3.310
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.13E-009 
       Octanol/air (Koa) model:  5.01E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.13E-007 
       Mackay model           :  2.51E-007 
       Octanol/air (Koa) model:  4.01E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.7000 E-12 cm3/molecule-sec
      Half-Life =    15.280 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1.82E-007 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  9.724
      Log Koc:  0.988 

 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: 0.17 (estimated)

 Volatilization from Water:
    Henry LC:  1.77E-005 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      31.64  hours   (1.318 days)
    Half-Life from Model Lake :        423  hours   (17.62 days)

 Removal In Wastewater Treatment:
    Total removal:               2.81  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.98  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       9.72            367          1000       
   Water     44.5            360          1000       
   Soil      45.7            720          1000       
   Sediment  0.0824          3.24e+003    0          
     Persistence Time: 345 hr

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