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ISO 2227:1972

Current Revision

Formaldehyde solutions for industrial use -- Determination of formaldehyde content

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 2227
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 47
Publish Date Document Id Type View
Not Available ISO 2227:1972 Revision