Abstract
The determination of the active metallic component in zinc dust for paints was conveniently determined by an iodimetric procedure in the presence of EDTA (H2Y2–, pH 5.3) to attack the ZnO protecting film. A precision of ±0.25%(95% confidence level) was attained for 0.13–0.15 g of zinc plus 25 ml of 0.1 mol l–1 I2–I– solution with back-titration with 0.1 mol l–1 S2O32–. The procedure was also applied to dry powdered paints in the presence of 5 ml of chloroform to attack the organic layer. Comparison with a modified permanganometric ASTM procedure for zinc dust, using an FeIII–acetate reagent, showed a higher precision for the iodimetric method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
