Reference number
ISO 3704:1976
International Standard
ISO 3704:1976
Sulphur for industrial use — Determination of acidity — Titrimetric method
Edition 1
1976-09
Read sample
ISO 3704:1976
9179
Published (Edition 1, 1976)
This publication was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 3704:1976

ISO 3704:1976
9179
Language
Format
CHF 42
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Abstract

Applicable to products having acidities, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Describes the extraction of acidic substances with a mixture of water and propan-2-ol (isopropyl alcohol). Titration of the extract with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The preparation of the sample from the laboratory sample is carried out by grinding a sufficient quantity of the undried material until it passes through a sieve of nominal mesh of 250 m.

General information

  •  : Published
     : 1976-09
    : International Standard under systematic review [90.20]
  •  : 1
     : 2
  • ISO/TC 47
    71.060.10 
  • RSS updates

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