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

Current stage: 90.20 Effective date: Jan 15, 2023

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.080.60

Languages: French English

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Status: Published

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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
90.20 Standard under periodical review
Jan 15, 2023

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