0

ISO 2750:1974

Urea for industrial use — Measurement of colour in Hazen units (platinum-cobalt scale) of a urea-formaldehyde solution ISO 2750:1974

Publication date:   Aug 1, 1974

95.99   Withdrawal of Standard   May 27, 2002

General information

95.99   Withdrawal of Standard   May 27, 2002

ISO

ISO/TC 47 Chemistry

International Standard

71.080.30   Organic nitrogen compounds

Buying

Withdrawn

Language in which you want to receive the document.

Scope

Lays down the principle of the visual comparison of the colour of a solution of the sample in formaldehyde, stabilized at a pH of 10 0.1, with that of colour standards. Expression of the results in terms of Hazen units. For routine control purposes, referring to ISO 2211. The method has also been approved by the IUPAC.

Life cycle

NOW

WITHDRAWN
ISO 2750:1974
95.99 Withdrawal of Standard
May 27, 2002




Access Genorma App Everywhere

Get fast and easy access to top European and International standards (EN, ISO, IEC) via your mobile phone, tablet or the web.

Google Play App Store Web Version