ISO 1388-9:1981

Ethanol for industrial use — Methods of test — Part 9: Determination of esters content — Titrimetric method after saponification

Publication date: Dec 1, 1981

General information

Current stage: 90.93 Effective date: Mar 15, 2018

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 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.

Life cycle

PREVIOUSLY

Revises
ISO/R 1388:1970

NOW

PUBLISHED
ISO 1388-9:1981
90.93 Standard confirmed
Mar 15, 2018

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