ISO 2227:1972
Formaldehyde solutions for industrial use; Determination of formaldehyde content

Standard No.

ISO 2227:1972

Release Date

1972

Published By

International Organization for Standardization (ISO)

Latest

ISO 2227:1972

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.

ISO 2227:1972 history

• 1972 ISO 2227:1972 Formaldehyde solutions for industrial use; Determination of formaldehyde content