Reference number
ISO 1994:1976
© ISO 2025
ISO 1994:1976
Hard coal — Determination of oxygen content
Edition 1
1976-12
Withdrawn
Withdrawn (Edition 1, 1976)

Abstract

The sample is dried at 105 to 110 °C in a stream of nitrogen and then pyrolysed under conditions in which the organic matter leaves an oxygen-free char. The volatile products, containing the organically bound oxygen and also water and carbon dioxide from any mineral matter, are decomposed with either pure carbon or platinized carbon to convert the oxygen to carbon monoxide. The carbon monoxide is oxidized to carbon dioxide and determined by a titrimetric or a gravimetric procedure.

General information

  • Status
     : Withdrawn
    Publication date
     : 1976-12
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 12
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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