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Homepage>ISO Standards>ISO 2227:1972-Formaldehyde solutions for industrial use — Determination of formaldehyde content
download between 0-24 hoursReleased: 1972
ISO 2227:1972-Formaldehyde solutions for industrial use — Determination of formaldehyde content

ISO 2227:1972

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

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Standard´s number:ISO 2227:1972
Pages:2
Edition:1
Released:1972
DESCRIPTION

ISO 2227:1972


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.
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