ISO 2227:1972

Formaldehyde solutions for industrial use — Determination of formaldehyde content

NORM herausgegeben am 1.12.1972

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The information about the standard:

Designation standards: ISO 2227:1972
Publication date standards: 1.12.1972
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: International technical standard
Kategorie: Technische Normen ISO

Annotation of standard text ISO 2227:1972 :

Description / Abstract: 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.