MADB Data Report


Chemical Form/Compound  NaNpO2(OH)2(s) 
Material Group  Miscellaneous 
Property Group  Hydrolysis 
Published Data  Hydrolysis constants 
Medium  1.0 M NaClO4 
Used Technique  Calculations involving the solid phase NaNpO2(OH)2(s)  
Estimated or Measured  estimated  
Publication  "Response to the comment by V. Neck on ‘‘Hydrolysis of neptunium(V) at variable temperatures (10 - 85 °C)’’, Geochimica et Cosmochimica Acta 68, 4821 - 4830", Geochimica et Cosmochimica Acta, 70, p 4556 - 4562, 2006 
Main Author (first name in publication)  L.Rao 
Data  log* β1 = -8.4
Data  log* β2 = -19.4

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