ISO-2227 › Formaldehyde solutions for industrial use -- Determination of formaldehyde content

ISO-2227 - 1ST EDITION - CURRENT


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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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71.080.80 (Aldehydes and ketones)

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Document Number

ISO 2227:1972

Revision Level

1ST EDITION

Status

Current

Publication Date

Dec. 1, 1972

Committee Number

ISO TC 47