ISO 1388-3:1981
Current
The latest, up-to-date edition.
Ethanol for industrial use — Methods of test — Part 3: Estimation of content of carbonyl compounds present in small amounts — Photometric method
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English, French
01-12-1981
The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of this red coloration at a wavelength of about 445 nm. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
| Committee |
ISO/TC 47
|
| DevelopmentNote |
Supersedes ISO 1388 (04/2001)
|
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NBN T 04 088 : 1983 | Identical |
| UNE 55813:1984 | Identical |
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