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Glavni meni

ISO 1388-8:1981

Ethanol for industrial use — Methods of test — Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) — Visual colorimetric method
1. 11. 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 principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 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 1388-8:1981
90.93 Odluka o potvrđivanju standarda
29. 11. 2023.

Nacionalna preuzimanja

Etanol za industrijsku upotrebu — Metode ispitivanja — Deo 8: Određivanje sadržaja metanola (sadržaj metanola u granicama od 0,10 % do 1,50 % zapreminske frakcije) — Vizuelna kolorimetrijska metoda

90.93   Odluka o potvrđivanju standarda

Etanol za industrijsku upotrebu - Određivanje sadržaja metanola (u granicama od 0,10 do 1,50 % (V/V)) - Kolorimetrijska metoda

95.99   Povučen