ISO 5522:1981
ISO 5522:1981

Status : Published (Under review)

This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
Format Language
std 1 63 PDF
std 2 63 Paper
  • CHF63
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The method consists in acidifying and heating a test portion, entraining, in a current of nitrogen, the gas liberated, absorbing and oxidizing the gas by bubbling it through a neutral, dilute hydrogen peroxide solution, then determining the sulphuric acid thus formed using standard volumetric sodium hydroxide solution. Verification of the determination is described in the annexes A and B, respectively.

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General information

  •  : Published
     : 1981-09
    : International Standard confirmed [90.93]
  •  : 1
     : 7
  • ISO/TC 34/SC 3
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