ISO 13773:1997 PDF

Overview

ISO 13773:1997 specifies a laboratory method for the determination of alkalinity in polychloroprene (chloroprene) latex produced by polymerization in an alkaline emulsion. The standard describes an electrometric (potentiometric) titration procedure that quantifies total alkalinity as millimoles of HCl per 100 g of latex and separates it into two practical components: alkaline reserve (free alkali) and delta titre (saponified anionic surfactants). This method is not suitable for polychloroprene latex prepared in non‑ionic emulsions, natural rubber latex concentrates, or necessarily for other synthetic latices.