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

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 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