ChemSpider 2D Image | Silicon dioxide | O2Si

Silicon dioxide

  • Molecular FormulaO2Si
  • Average mass60.084 Da
  • Monoisotopic mass59.966755 Da
  • ChemSpider ID22683

More details:






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

Silicon dioxide [Wiki]
14639-89-5 [RN]
20243-18-9 [RN]
231-545-4 [EINECS]
231-589-4 [EINECS]
262-373-8 [EINECS]
266-046-0 [EINECS]
272-489-0 [EINECS]
293-303-4 [EINECS]
65997-17-3 [RN]
More...

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

CAFA II 100g (Celite(R) Analytical Filter Aid II) [DBID]
Celite(R) 500 fine [DBID]
Celite(R) 512 medium [DBID]
Celite(R) 545 AW [DBID]
ETJ7Z6XBU4 [DBID]
K-411 Glass microspheres [DBID]
LK3651000 [DBID]
LZ5184000 [DBID]
00223_FLUKA [DBID]
00653_FLUKA [DBID]
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Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Density:
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 2
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations:
ACD/LogP:
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: 34 Å2
Polarizability:
Surface Tension:
Molar Volume:

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

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  0.53

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  433.44  (Adapted Stein & Brown method)
    Melting Pt (deg C):  158.94  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  5.36E-008  (Modified Grain method)
    Subcooled liquid VP: 1.26E-006 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):  4.844e+004
       log Kow used: 0.53 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  439.52 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  8.747E-014 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7189
   Biowin2 (Non-Linear Model)     :   0.8962
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0664  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7610  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5334
   Biowin6 (MITI Non-Linear Model):   0.6881
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.8361
 Ready Biodegradability Prediction:   YES

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

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  0.000168 Pa (1.26E-006 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.0179 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.392 
       Mackay model           :  0.588 
       Octanol/air (Koa) model:  not available

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.0000 E-12 cm3/molecule-sec
      Half-Life =   -------
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 0.49 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  23.74
      Log Koc:  1.376 

 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: 0.53 (estimated)

 Volatilization from Water:
    Henry LC:  8.75E-014 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River: 5.188E+009  hours   (2.162E+008 days)
    Half-Life from Model Lake :  5.66E+010  hours   (2.358E+009 days)

 Removal In Wastewater Treatment:
    Total removal:               1.86  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.77  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       3.63e-006       1e+005       1000       
   Water     37.3            360          1000       
   Soil      62.6            720          1000       
   Sediment  0.0704          3.24e+003    0          
     Persistence Time: 590 hr




                    

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