JAIC 1979, Volume 19, Number 1, Article 3 (pp. 14 to 23)
JAIC online
Journal of the American Institute for Conservation
JAIC 1979, Volume 19, Number 1, Article 3 (pp. 14 to 23)

IDENTIFICATION OF DYES ON OLD TEXTILES

Helmut Schweppe


ABSTRACT—A method for the differentiation of natural from synthetic dyes on textiles is discussed, and a simple method for the identification of natural dyes on old textiles is established. Identification is accomplished by the preparation of lakes of the dyes and their color comparison with lakes of known dyes. Thin-layer chromatography for the identification of certain red dyes and yellow dyes is also discussed, and several examples of identification of unknown dyes are described.

Article Sections:

1. INTRODUCTION
2. PRELIMINARY EXAMINATION
3. COLOR REACTIONS FOR THE IDENTIFICATION OF NATURAL MORDANT DYES
4. YELLOW
5. ORANGE AND BROWN
6. RED
7. BLACK
8. MIXTURES OF NATURAL DYES AND INDIGO
9. RAPID TEST FOR DISTINGUISHING AMONG MADDER, COCHINEAL, AND KERMES
10. THIN-LAYER CHROMATOGRAPHY
1. APPENDIX 1: SUPPLIERS OF NATURAL DYES/DRUGS
2. APPENDIX 2: BOOKS ON COLORING WITH NATURAL DYES
a: Appendix , Notes
Entire Article

Copyright 1979 American Institute for Conservation of Historic and Artistic Works