ChemSpider 2D Image | cyclooctasulfur | S8


  • Molecular FormulaS8
  • Average mass256.520 Da
  • Monoisotopic mass255.776566 Da
  • ChemSpider ID59726

More details:

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

Octathiocan [German] [ACD/IUPAC Name]
Octathiocane [ACD/Index Name] [ACD/IUPAC Name]
Octathiocane [French] [ACD/Index Name] [ACD/IUPAC Name]
Sulfur [Wiki]
10544-50-0 [RN]
115725-44-5 [RN]

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

CHEBI:29385 [DBID]
NSC603623 [DBID]

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

Density: 1.9±0.1 g/cm3
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction: 1.924
Molar Refractivity: 65.3±0.3 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: 3.73
ACD/LogD (pH 5.5):
ACD/BCF (pH 5.5):
ACD/KOC (pH 5.5):
ACD/LogD (pH 7.4):
ACD/BCF (pH 7.4):
ACD/KOC (pH 7.4):
Polar Surface Area: 202 Å2
Polarizability: 25.9±0.5 10-24cm3
Surface Tension: 108.2±3.0 dyne/cm
Molar Volume: 137.8±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) =  0.23

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  704.32  (Adapted Stein & Brown method)
    Melting Pt (deg C):  308.04  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  8.62E-017  (Modified Grain method)
    Subcooled liquid VP: 1.28E-013 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  1.388e+004
       log Kow used: 0.23 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  73144 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   7.89E-001  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.096E-021 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.23  (KowWin est)
  Log Kaw used:  1.509  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  -1.279
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6254
   Biowin2 (Non-Linear Model)     :   0.3468
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.6324  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.4777  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :  -0.0509
   Biowin6 (MITI Non-Linear Model):   0.0076
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.8361
 Ready Biodegradability Prediction:   NO

 Hydrocarbon Biodegradation (BioHCwin v1.01):
     LOG BioHC Half-Life (days) :   2.5698
     BioHC Half-Life (days)     : 371.3281

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  1.71E-011 Pa (1.28E-013 mm Hg)
  Log Koa (Koawin est  ): -1.279
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.76E+005 
       Octanol/air (Koa) model:  1.29E-014 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1 
       Mackay model           :  1 
       Octanol/air (Koa) model:  1.03E-012 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant = 1350.0000 E-12 cm3/molecule-sec
      Half-Life =     0.008 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     5.705 Min
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 1 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  562.9
      Log Koc:  2.750 

 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: 0.23 (estimated)

 Volatilization from Water:
    Henry LC:  0.789 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      1.635  hours
    Half-Life from Model Lake :      152.1  hours   (6.339 days)

 Removal In Wastewater Treatment (recommended maximum 95%):
    Total removal:              99.67  percent
    Total biodegradation:        0.02  percent
    Total sludge adsorption:     0.26  percent
    Total to Air:               99.40  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.297           0.19         1000       
   Water     98.6            900          1000       
   Soil      0.901           1.8e+003     1000       
   Sediment  0.192           8.1e+003     0          
     Persistence Time: 79.3 hr


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