ChemSpider 2D Image | Cesium | Cs

Cesium

  • Molecular FormulaCs
  • Average mass132.906 Da
  • Monoisotopic mass132.905441 Da
  • ChemSpider ID4510778

More details:






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

Caesium [ACD/IUPAC Name] [Wiki]
Cesium [ACD/Index Name] [Wiki]
1KSV9V4Y4I
231-155-4 [EINECS]
55Cs
7440-46-2 [RN]
Caesium [German] [ACD/IUPAC Name]
caesium atom
Cäsium [German]
Césium [French] [ACD/IUPAC Name]
More...

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

CHEBI:30514 [DBID]
02787_FLUKA [DBID]
14714_RIEDEL [DBID]
17069_FLUKA [DBID]
20952_FLUKA [DBID]
239240_ALDRICH [DBID]
HSDB 7040 [DBID]
UN1407 [DBID]
  • Experimental Physico-chemical Properties
    • Experimental Melting Point:

      28.5 °C OU Chemical Safety Data (No longer updated) More details
      28.5 °C Parchem – fine & specialty chemicals 42031
      400 °C Kaye & Laby (No longer updated)
      28.4 °C Kaye & Laby (No longer updated)
    • Experimental Boiling Point:

      705 °C OU Chemical Safety Data (No longer updated) More details
      705 °C Parchem – fine & specialty chemicals 42031
      670 °C / 760 mmHg Kaye & Laby (No longer updated)
    • Experimental Solubility:

      decomposes in 100?C water Kaye & Laby (No longer updated)
      soluble in 20?C water Kaye & Laby (No longer updated)
      soluble in acid Kaye & Laby (No longer updated)
    • Experimental Density:

      4.35 g/mL / 20 °C Kaye & Laby (No longer updated)
      1.9 g/mL / 20 °C Kaye & Laby (No longer updated)
  • Miscellaneous
    • Appearance:

      silvery, light ductile metal OU Chemical Safety Data (No longer updated) More details
    • Stability:

      Flammable solid; highly flammable in powder form. Moisture-sensitive. Incompatible withchlorine, phosphorus, water. OU Chemical Safety Data (No longer updated) More details
    • Toxicity:

      Inorganic Compound; Metal; Food Toxin; Metabolite; Industrial/Workplace Toxin; Natural Compound Toxin, Toxin-Target Database T3D3974
      IPR-MUS LD50 1700 mg kg-1 OU Chemical Safety Data (No longer updated) More details
    • Safety:

      14/15-34 Alfa Aesar 10146, 43005
      23-26-36/37/39-45 Alfa Aesar 13825, 14425, 88058
      34 Alfa Aesar 13825, 14425, 88058
      7/8-26-36/37/39-43-45 Alfa Aesar 10146, 43005
      DANGER: FLAMMABLE, burns skin and eyes Alfa Aesar 10146
      DANGER: WATER REACTIVE, FLAMMABLE, burns skin and eyes Alfa Aesar 10146, 43005
      Safety glasses, gloves. Protect from air and moisture. OU Chemical Safety Data (No longer updated) More details
      WARNING: CORROSIVE, burns skin and eyes Alfa Aesar 13825, 14425
      WARNING: CORROSIVE, irritates skin and eyes Alfa Aesar 13825, 14425, 88058

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: 0
#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: 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) =  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):  4.24E-009  (Modified Grain method)
    Subcooled liquid VP: 2.19E-007 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):  5.707e+004
       log Kow used: 0.23 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  2.3592e+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]:  1.299E-014 atm-m3/mole

 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)         :   0.6843
   Biowin2 (Non-Linear Model)     :   0.7543
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9055  (weeks       )
   Biowin4 (Primary Survey Model) :   3.6560  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.3167
   Biowin6 (MITI Non-Linear Model):   0.2123
 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):  2.92E-005 Pa (2.19E-007 mm Hg)
  Log Koa (Koawin est  ): 0.229
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.103 
       Octanol/air (Koa) model:  4.16E-013 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.788 
       Mackay model           :  0.892 
       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): 0.84 (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 = 0.500 (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:      1.204  hours
    Half-Life from Model Lake :      109.8  hours   (4.575 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       40.2            1e+005       1000       
   Water     54.1            360          1000       
   Soil      5.63            720          1000       
   Sediment  0.101           3.24e+003    0          
     Persistence Time: 177 hr




                    

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