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SRPS ISO 1388-3:2014

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

Feb 28, 2014

General information

90.93     Nov 29, 2023

90.20    Oct 15, 2028

ISS

H047

International Standard

71.080.60  

English  

Plan za 2013. godinu.

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS H.B8.237:1988

NOW

PUBLISHED
SRPS ISO 1388-3:2014
90.93 Standard confirmed
Nov 29, 2023

Related project

Adopted from ISO 1388-3:1981