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ISO 2227:1972

Formaldehyde solutions for industrial use — Determination of formaldehyde content

Dec 1, 1972

General information

90.93     Oct 20, 2023

ISO

ISO/TC 47

International Standard

71.080.80  

French   English  

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Scope

The specified method is applicable to HCHO contents between 25 5 and 45 %. The field of application may be extended by siutably modifying the mass of the test portion. The principle consists in the reaction of the test solution with a neutral sodium sulphite solution, and acidimetric titration of the liberated sodium hydroxide in presence of thymolphthalein as indicator.

Life cycle

NOW

PUBLISHED
ISO 2227:1972
90.93 Standard confirmed
Oct 20, 2023