Final Draft
International Standard
ISO/FDIS 622
Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method
Reference number
ISO/FDIS 622
Edition 3
© ISO 2025
Final Draft International Standard
Under development
This draft is in the approval phase.
Will replace ISO 622:2016

Abstract

ISO 622:2016 specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus content of hard coal, lignites and coke. Two methods for taking the phosphorus into solution are specified, namely extraction from the coal or coke ash with acid or by repeated oxidation of the coal or coke, by acid, to remove carbonaceous matter.

General information

  • Status
     : Under development
    Stage
    : Final text received or FDIS registered for formal approval [50.00]
  • Edition
     : 3
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040  75.160.10 
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