ChemSpider 2D Image | Radon | Rn

Radon

  • Molecular FormulaRn
  • Average mass222.018 Da
  • Monoisotopic mass222.017563 Da
  • ChemSpider ID23240

More details:






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

14859-67-7 [RN]
233-146-0 [EINECS]
Q74S4N8N1G
Radon [ACD/Index Name] [ACD/IUPAC Name] [Wiki]
Radon [German] [ACD/Index Name] [ACD/IUPAC Name]
Radon [French] [ACD/Index Name] [ACD/IUPAC Name]
RADON RN-222
radon(0)
10043-92-2; 14859-67-7
86Rn
More...

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

CHEBI:49997 [DBID]
Radon 222 [DBID]
. [DBID]
CHEBI:33314 [DBID]
HSDB 6369 [DBID]
radon-222 [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Appearance:

      colourless gas Oxford University Chemical Safety Data (No longer updated) More details
    • Stability:

      Radiochemically unstable. Chemically unreactive. Oxford University Chemical Safety Data (No longer updated) More details
    • Toxicity:

      Inorganic Compound; Non-Metal; Radioactive Isotope; Nobel Gas; Pollutant; Cigarette Toxin; Natural Compound; Radioactive Toxin, Toxin-Target Database T3D0105
    • Safety:

      Adequate ventilation, to reduce any build up of gas. Further information Radon map for the USA Radon map for Denmark Radon map for England Radon map for Scotland Oxford University Chemical Safety Data (No longer updated) More details
    • Chemical Class:

      A monoatomic radon that has an oxidation state of zero. ChEBI CHEBI:33314, CHEBI:49997

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

Density:
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0
ACD/LogP: 1.51
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: 0 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) =  1.51
    Log Kow (Exper. database match) =  1.51
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  482.98  (Adapted Stein & Brown method)
    Melting Pt (deg C):  188.60  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  123  (Modified Grain method)
    BP  (exp database):  -62 deg C
    Subcooled liquid VP: 6.33E+003 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):  1724
       log Kow used: 1.51 (expkow database)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  3.941e+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 :   2.45E-002  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  2.084E-002 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  1.51  (exp database)
  Log Kaw used:  0.001  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  1.509
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6418
   Biowin2 (Non-Linear Model)     :   0.4641
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.7085  (weeks-months)
   Biowin4 (Primary Survey Model) :   3.5274  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.0516
   Biowin6 (MITI Non-Linear Model):   0.0202
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.8361
 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):  8.44E+005 Pa (6.33E+003 mm Hg)
  Log Koa (Koawin est  ): 1.509
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.55E-012 
       Octanol/air (Koa) model:  7.93E-012 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.28E-010 
       Mackay model           :  2.84E-010 
       Octanol/air (Koa) model:  6.34E-010 

 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): 2.06E-010 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  14.3
      Log Koc:  1.155 

 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 = 0.463 (BCF = 2.902)
       log Kow used: 1.51 (expkow database)

 Volatilization from Water:
    Henry LC:  0.0245 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      1.556  hours
    Half-Life from Model Lake :      141.9  hours   (5.913 days)

 Removal In Wastewater Treatment:
    Total removal:              90.51  percent
    Total biodegradation:        0.02  percent
    Total sludge adsorption:     0.47  percent
    Total to Air:               90.02  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       51.2            1e+005       1000       
   Water     47              900          1000       
   Soil      1.63            1.8e+003     1000       
   Sediment  0.119           8.1e+003     0          
     Persistence Time: 168 hr




                    

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