ISO 2227:1972 (R2023)
Active , Reaffirmed Standard
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ISO 2227:1972 (R2023)

Formaldehyde solutions for industrial use — Determination of formaldehyde content

Summary

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.

Notes

90.93 : Norme internationale confirmée

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 12/01/1972
Confirmation Date 10/20/2023
Edition 1
Page Count 2
EAN ---
ISBN ---
Weight (in grams) ---
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