GSO ISO 4629-2:2021
Gulf Standard
Current Edition
·
Approved on
01 July 2021
·
Binders for paints and varnishes — Determination of hydroxyl value — Part 2: Titrimetric method using a catalyst
GSO ISO 4629-2:2021 Files
English
6 Pages
Current Edition
Reference Language
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GSO ISO 4629-2:2021 Scope
ISO 4629-2:2016 specifies a titrimetric method for determining the hydroxyl value of resins, binders for paints and varnishes, primary alcohols, glycols and fats. Whether it can be applied for hydro carboxylic acids, phenolic hydroxyl groups, polyols such as trimethyl propane and substances containing aromatic groups have been activated for Friedel-Crafts acylation shall be decided on case-to-case basis.
Under the right conditions, the method is also applicable for determining the hydroxyl value of castor oil and its derivatives.
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