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

Publication date:   Dec 1, 1981

General information

90.93 Standard confirmed   Mar 15, 2018

ISO

ISO/TC 47 Chemistry

International Standard

71.080.60   Alcohols. Ethers

Buying

Published

Language in which you want to receive the document.

Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO/R 1388:1970

NOW

PUBLISHED
ISO 1388-4:1981
90.93 Standard confirmed
Mar 15, 2018