ISO-1388-9 › Ethanol for industrial use -- Methods of test -- Part 9 : Determination of esters content -- Titrimetric method after saponification

ISO-1388-9 - 1ST EDITION - CURRENT


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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.

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Document Number

ISO 1388-9:1981

Revision Level

1ST EDITION

Status

Current

Publication Date

Dec. 1, 1981

Committee Number

ISO TC 47