Plastics — Phenol-formaldehyde mouldings — Determination of free phenols — Iodometric method
NORM herausgegeben am 1.10.1977
Bezeichnung normen: ISO 119:1977
Ausgabedatum normen: 1.10.1977
Zahl der Seiten: 2
Gewicht ca.: 6 g (0.01 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / Abstract: A semiquantitative method for the determination of the amount of free phenols in phenolic mouldings. Hot water extraction of free phenols from a powdered test portion, iodination of the water extract and backtitration of the excess of iodine with standard volumetric thiosulfate solution.