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ISO 1388-9:1981

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Abstract

The method is applicable to products having esters contents in the range 0.005 % (m/m) to 0.15 % (m/m). The principle consists in the saponification of esters present in a test portion by boiling with excess standard volumetric sodium hydroxide solution; determination of the residual sodium hydroxide, and hence the amount used for saponification, by titration with standard volumetric hydrochloric acid solution in the presence of phenolphthalein as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

Document information

  • Standard from ISO
  • Published:
  • Edition: 1
  • Version: 1
  • Document type: IS
  • ICS 71.080.60
  • ISO TC ISO/TC 47

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