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

Publication date: Dec 1, 1981

General information

Current stage: 90.93 Effective date: Mar 15, 2018

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.080.60

Languages: French English

Buying

Status: Published

PDF - EC$120.40

Paper - EC$120.40

PDF and Paper - EC$240.80

Language

Language in which you want to receive the document.

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

Revises
ISO/R 1388:1970

NOW

PUBLISHED
ISO 1388-3:1981
90.93 Standard confirmed
Mar 15, 2018

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.