Munjistin
Jump to navigation
Jump to search
Description
Orange leaflet crystals. Munjistin is one of the natural colorants extracted from madder and munjeet roots. It dissolves in alkalis to give a red solution and turns yellow in acids. Munjistin precipitates with alum to give a bright orange color. It has been used with an alum mordant to dye wool orange.
Synonyms and Related Terms
1,3-dihydroxyanthraquinone-2-carboxylic acid; CI 75370; munjistina (Esp., Port.)
Physical and Chemical Properties
Soluble in boiling water, ether, benzene, hot glacial acetic acid. Slightly soluble in cold water.
| Melting Point | 232-233 C |
|---|
Resources and Citations
- Artists' Pigments: A Handbook of their History and Characteristics, Elisabeth West FitzHugh, Oxford University Press, Oxford, Vol. 3, 1997 Comment: H.Schweppe, J.Winter, "Madder and Alizarin"