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ISO 1388-3:1981

Ethanol for industrial use — Methods of test — Part 3: Estimation of content of carbonyl compounds present in small amounts — Photometric method
1. 12. 1981.

Опште информације

90.93     29. 11. 2023.

ISO

ISO/TC 47

Međunarodni standard

71.080.60  

francuski   engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO/R 1388:1970

TRENUTNO

OBJAVLJEN
ISO 1388-3:1981
90.93 Odluka o potvrđivanju standarda
29. 11. 2023.

Nacionalna preuzimanja

SRPS ISO 1388-3:2014  
ISS

Etanol za industrijsku upotrebu — Metode ispitivanja — Deo 3: Procena sadržaja malih količina karbonilnih jedinjenja — Spektrofotometrijska metoda

90.93   Odluka o potvrđivanju standarda

H047 Saznaj više

SRPS H.B8.237:1988  
ISS

Etanol za industrijsku upotrebu - Određivanje sadržaja malih količina karbonilnih jedinjenja (kao acetaldehid) - Spektrofotometrijska metoda

95.99   Povučen

H047 Saznaj više