Definition of Nereum tinctorium. Meaning of Nereum tinctorium. Synonyms of Nereum tinctorium

Here you will find one or more explanations in English for the word Nereum tinctorium. Also in the bottom left of the page several parts of wikipedia pages related to the word Nereum tinctorium and, of course, Nereum tinctorium synonyms and on the right images related to the word Nereum tinctorium.

Definition of Nereum tinctorium

Nereum tinctorium
2. (Chem.) A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, Isatis tinctoria, Indigofera tinctoria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican. Note: Commercial indigo contains the essential coloring principle indigo blue or indigotine, with several other dyes; as, indigo red, indigo brown, etc., and various impurities. Indigo is insoluble in ordinary reagents, with the exception of strong sulphuric acid. Chinese indigo (Bot.), Isatis indigotica, a kind of woad. Wild indigo (Bot.), the American herb Baptisia tinctoria which yields a poor quality of indigo, as do several other species of the same genus.

Meaning of Nereum tinctorium from wikipedia