JAIC 1986, Volume 25, Number 2, Article 1 (pp. 65 to 72)
JAIC online
Journal of the American Institute for Conservation
JAIC 1986, Volume 25, Number 2, Article 1 (pp. 65 to 72)

DETERMINATION OF THE SPECIFIC RATE CONSTANT FOR THE LOSS OF A YELLOW INTERMEDIATE DURING THE FADING OF ALIZARIN LAKE

Robert L. Feller, Ruth M. Johnston-Feller, & Catherine Bailie


ABSTRACT—In the course of photochemically-induced fading, alizarin lake mixed with a photochemically-inert titanium white in a poly(vinylacetate) vehicle apparently passes through a yellow intermediate stage. A simple graphical method is described which permitted calculation of the specific rate constant for the first-order rate of fading of the yellow intermediate.

Article Sections:

1. INTRODUCTION
2. FIRST-ORDER RATE EQUATIONS
3. FORMATION OF A YELLOW INTERMEDIATE
4. EQUATIONS FOR THE RATE OF FORMATION AND LOSS OF THE INTERMEDIATE
5. GRAPHICAL SOLUTIONS TO EQUATIONS
6. VALUE OF K2 INDEPENDENT OF TRUE CONCENTRATION OF YELLOW COMPONENT
7. CONCLUSION
a: References
Entire Article

Copyright 1986 American Institute of Historic and Artistic Works