ISO 1388-9:1981
Ethanol for industrial use; Methods of test; Part 9 : Determination of esters content; Titrimetric method after saponification
- Standard No.
- ISO 1388-9:1981
- Release Date
- 1981
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 1388-9:1981
- 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.
ISO 1388-9:1981 history
- 1981 ISO 1388-9:1981 Ethanol for industrial use; Methods of test; Part 9 : Determination of esters content; Titrimetric method after saponification
