copper acetate
Austria
21th Century
Source: Henniges, U., Prohaska, T., Banik, G., & Potthast, A. (2006). A fluorescence labeling approach to assess the deterioration state of aged papers. Cellulose, 13(4), 421-428.
Recipe Details
Ingredients
basic copper acetate, neutral copper acetate, skin glue
Preparation Steps
The pigment was prepared by mixing 90% basic copper acetate with 10% neutral copper acetate (p. 423). This mixture was bound in a skin glue media and applied as lines/strokes to simulate the appearance and chemical behavior of green or blue copper pigments found in historic wall papers (p. 421, 423).
Original Recipe Text
The pigment was prepared by mixing 90% basic copper acetate with 10% neutral copper acetate (p. 423). This mixture was bound in a skin glue media and applied as lines/strokes to simulate the appearance and chemical behavior of green or blue copper pigments found in historic wall papers (p. 421, 423).
Evidence
"Copper acetate (90% basic and 10% neutral copper acetate) was printed on unsized paper according to historical protocols. The pigment was bound in skin glue media."
Remarks
In historical preparations, copper acetate is often a mixture of neutral and basic forms, which are partially water-soluble (p. 422). The study focuses on the migration of copper ions from the pigment layer into the paper substrate, triggered by humidity or the binding agent's degradation (p. 422).
Scientific Analysis
Chemical Compositioncopper acetate (90% basic and 10% neutral copper acetate)
Analytical Techniques
FDAM labeling
LA-ICP-MS
CCOA labeling
GPC-MALLS
Certainty Level
Confirmed
Instrumentally Verified
Verified
Metadata
Material Type
pigment
Binderskin glue media
Paper Typemodern handmade paper composed of linen and flax fibers
ColorGreen
RegionAustria
Approx. Year2050
Source Information
AuthorHenniges, U., Prohaska, T., Banik, G., & Potthast, A.
CollectionLaboratory prepared samples following historical protocols
Language
N/A
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