Total acid number in unsaturated polyester resin in accordance with DIN EN ISO 2114

Huvuddokument

The total acid number, e.g., in unsaturated polyester resins, is defined as the quantity of potassium hydroxide that is required for the neutralization of all carbonyl end groups, free acids and the free anhydride groups. This Application Note describes the determination of the total acid number in accordance with DIN EN ISO 2114 using potentiometric titration and KOH in ethanol as titrant.