Active standard | Published: 01/12/1981

ISO 1388-4:1981

Ethanol for industrial use — Methods of test — Part 4: Estimation of content of carbonyl compounds present in moderate amounts — Titrimetric method
(Éthanol a usage industriel — Méthodes d´essai — Partie 4: Évaluation de la teneur en composés carbonylés présents en quantité modérée — Méthode titrimétrique)

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Detail information

Designation: ISO 1388-4:1981

Publication date: 01/12/1981

Pages: 3

Country: International technical standard

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Anotation

Description / Abstract: The method is applicable to products having carbonyl compounds contents equal to or greater than 0.01 % (m/m). The method only allows determination of those carbonyl compounds which react under the specified conditions. The principle is based on the reaction of hydroxylammonium chloride with the carbonyl compounds in a test portion and titration of the hydrochloric acid formed with standard volumetric sodium hydroxide solution, in the presence of bromophenol blue 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.

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