Difference between revisions of "Gunari"
Jump to navigation
Jump to search
(username removed) |
|||
| Line 1: | Line 1: | ||
== Description == | == Description == | ||
| − | A bright yellow, natural dyestuff obtained from the leaves of the Indian mahogany tree, ''Cedula toona'', native to the southern Asia. Gunari has been used to dye wool and silk a bright yellow color. The primary colorant in gunari is [ | + | A bright yellow, natural dyestuff obtained from the leaves of the Indian mahogany tree, ''Cedula toona'', native to the southern Asia. Gunari has been used to dye wool and silk a bright yellow color. The primary colorant in gunari is [[crocetin]]. Crocetin is a substantive dye that is also found in [[saffron]]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 09:41, 16 January 2014
Description
A bright yellow, natural dyestuff obtained from the leaves of the Indian mahogany tree, Cedula toona, native to the southern Asia. Gunari has been used to dye wool and silk a bright yellow color. The primary colorant in gunari is Crocetin. Crocetin is a substantive dye that is also found in Saffron.
Synonyms and Related Terms
Natural Yellow 4
Other Properties
Crocetin is soluble in water, ethanol, alkali solutions. Crocetin forms a blue solution in concentrated sulfuric acid.
Additional Information
J.Hofenk-de Graaf, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
Authority
- Helmut Schweppe, Schweppe color collection index and information book
- Colour Index International online at www.colour-index.org
- Judith Hofenk-de Graaff, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969