File:Poster Thecotrochite-Linnov-etal.pdf

Formation of Acetates on Salt Contaminated Ceramics

Kirsten Linnow¹, Lieve Halsberghe² and Michael Steiger¹

1. Universität Hamburg, Institut für Anorganische und Angewandte Chemie, D - 20146 Hamburg, Germany
2. Ceramics conservation and restoration, 15, rue de Bivange, L-3395 Roeser, Luxembourg,E-mail: lievehalsberghe@hotmail.com

Serious damage of calcareous materials by acetic acid vapour attack has been observed on tiles in museum collections in Belgium. Formation of acetate salt efflorescence on calcareous artefacts is a widespread problem in wooden museum cabinets. Various precipitations from the mixed calcium-acetate-chloride-nitrate system have been observed. Solubility measurements were carried out and several different solids were identified by x-ray diffraction and ion analysis. Application of an equilibrium model allows for the calculation of the invariant points in this quaternary salt system, yielding the complete phase diagram, consisting of ten different solid phases, was constructed. The phase diagram is used to explain of the formation of calcium acetate containing efflorescences.

Poster präsentiert:
Indoor Air Quality in Museums and Historic Properties
IAQ 2003: 5th meeting of the Indoor Air Pollution Working Group

University of East Anglia, School of Environmental Sciences Norwich, April 28th-29th, 2003

Creative-Commons-Licence: CC_BY-NC-ND_3.0[edit]

This image or file is licensed under the Creative-Commons-License Attribution - Noncommercial - No Derivative Works Germany in the version 3.0. You are free: to Share — to copy, distribute and transmit the work Under the following conditions: Attribution — You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial — You may not use this work for commercial purposes. No Derivative Works — You may not alter, transform, or build upon this work. Notice — For any reuse or distribution, you must make clear to others the license terms of this work. The best way to do this is with a link to the Commons Deed.