Draft International Standard
ISO/DIS 622
Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method
Reference number
ISO/DIS 622
Edition 3
© ISO 2024
Draft
International Standard
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Under development
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 622:2016

ISO/DIS 622

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Language
CHF 63
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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

    You can help develop this draft international standard by contacting your national member

    Stage
    : DIS ballot initiated: 12 weeks [40.20]
  • Edition
     : 3
    Number of pages
     : 7
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040  75.160.10 
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