ISO 1017:1985
Brown coals and lignites — Determination of acetone-soluble material ("resinous substances") in the toluene-soluble extract
Reference number
ISO 1017:1985
Edición 2
1985-12
© ISO 2024
Retirada
Retirada (Edición 2, 1985)

Resumen

A sample of toluene-soluble extract from brown coal or lignite obtained by the procedure describes in ISO 975 is extracted with acetone at a temperature of 18 to 22 °C. The soluble fraction is filtered or centrifuged off and after evaporation of the solvent dried to constant mass. The percentage of acetone-soluble material is calculated from the mass of reidue after drying.

Informaciones generales

  • Estado
     : Retirada
    Fecha de publicación
     : 1985-12
    Etapa
    : Retirada de la Norma Internacional [95.99]
  • Edición
     : 2
    Número de páginas
     : 2
  • Comité Técnico :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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