ISO 622:2025-ed.3.0

Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method

STANDARD published on 25.6.2025

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The information about the standard:

Designation standards: ISO 622:2025-ed.3.0
Publication date standards: 25.6.2025
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: International technical standard
Category: Technical standards ISO

Annotation of standard text ISO 622:2025-ed.3.0 :

Description / Abstract: This document specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus mass fraction 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.