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sklademVydáno: 1981
ISO 1388-5:1981
ISO 1388-5:1981-Ethanol for industrial use — Methods of test-Part 5: Determination of aldehydes content — Visual colorimetric method
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| Označení normy: | ISO 1388-5:1981 |
| Počet stran: | 3 |
| Vydání: | 1 |
| Vydáno: | 1981 |
Popis
ISO 1388-5:1981
The method is applicable to products having aldehyde contents in the range 0.00025 % (m/m) to 0.00125 % (m/m). The principle is based on the reaction of the aldehydes present in a test portion with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of acetaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.