ChemSpider 2D Image | chromium-51 | 51Cr

chromium-51

  • Molecular Formula51Cr
  • Average mass50.945 Da
  • Monoisotopic mass50.944771 Da
  • ChemSpider ID94591
  • Non-standard isotope - Non-standard isotope


More details:






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

(51Cr)Chrom [German] [ACD/IUPAC Name]
(51Cr)Chrome [French] [ACD/IUPAC Name]
(51Cr)Chromium [ACD/IUPAC Name]
14392-02-0 [RN]
CHROMIUM CR-51
Chromium-51Cr [ACD/Index Name]
chromium-51
UNII:P0YP7XQ8XB
(51)24Cr
(51)Cr
More...

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

9QAU17N705 [DBID]
UNII:9QAU17N705 [DBID]
UNII-9QAU17N705 [DBID]
  • Miscellaneous
    • Chemical Class:

      A synthetic radioactive isotope of chromium having a half-life of 27.7 days and decaying by electron capture with emission of gamma rays (0.32 MeV); it is used to label red blood cells for measurement of mass or volume, survival time, and sequestration studies, for the diagnosis of gastrointestinal bleeding, and to label platelets to study their survival. ChEBI CHEBI:50076

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

No predicted properties have been calculated for this compound.

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):  482.98  (Adapted Stein & Brown method)
    Melting Pt (deg C):  188.60  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0  (Modified Grain method)
    MP  (exp database):  1900 deg C
    BP  (exp database):  2642 deg C
    Subcooled liquid VP: 0 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):  8.667e+004
       log Kow used: 0.23 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  92297 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]:  not available

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.23  (KowWin est)
  Log Kaw used:  0.001  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  0.229
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7228
   Biowin2 (Non-Linear Model)     :   0.9064
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0843  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7727  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5575
   Biowin6 (MITI Non-Linear Model):   0.7359
 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):  -99 Pa (0 mm Hg)
  Log Koa (Koawin est  ): 0.229
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  not available
       Octanol/air (Koa) model:  4.16E-013 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  not available
       Mackay model           :  not available
       Octanol/air (Koa) model:  3.33E-011 

 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): 3.33E-011 (Koa method)
    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 = 0.500 (BCF = 3.162)
       log Kow used: 0.23 (estimated)

 Volatilization from Water:
    Henry LC:  0.0245 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:     0.7531  hours   (45.18 min)
    Half-Life from Model Lake :      68.68  hours   (2.862 days)

 Removal In Wastewater Treatment:
    Total removal:              90.51  percent
    Total biodegradation:        0.02  percent
    Total sludge adsorption:     0.40  percent
    Total to Air:               90.09  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       38.1            1e+005       1000       
   Water     55.6            360          1000       
   Soil      6.22            720          1000       
   Sediment  0.103           3.24e+003    0          
     Persistence Time: 182 hr




                    

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