Definition of colcothar. Meaning of colcothar. Synonyms of colcothar

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

Definition of colcothar

Colcothar
Colcothar Col"co*thar (k[o^]l"k[-o]*th[~e]r), n. [NL. colcothar vitrioli, fr. Ar. qolqo[.t]ar.] (Chem.) Polishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also crocus Martis.
colcothar
Crocus Cro"cus (kr[=o]"k[u^]s), n. [L., saffron, fr. Gr. kro`kos; cf. Heb. kark[=o]m, Ar. kurkum, Skr. ku[.n]kuma.] 1. (Bot.) A genus of iridaceous plants, with pretty blossoms rising separately from the bulb or corm. C. vernus is one of the earliest of spring-blooming flowers; C. sativus produces the saffron, and blossoms in the autumn. 2. (Chem.) A deep yellow powder; the oxide of some metal calcined to a red or deep yellow color; esp., the oxide of iron (Crocus of Mars or colcothar) thus produced from salts of iron, and used as a polishing powder. Crocus of Venus (Old Chem.), oxide of copper.

Meaning of colcothar from wikipedia

- ferric oxide, haematite, ferric iron, red iron oxide, rouge, maghemite, colcothar, iron sesquioxide, rust, ochre Identifiers CAS Number 1309-37-1 Y 3D model...
- chloride), formed by heating copper with corrosive sublimate. Rouge/crocus/colcothar – ferric oxide, formed by burning green vitriol in air. Stibnite – antimony...
- urushi (poison oak sap) – the process taking several months. Iron oxide (colcothar) and cinnabar (mercury sulfide) were used for producing red lacquer. Lacquer...
- urushi (poison oak sap) – the process taking several months. Iron oxide (colcothar) and cinnabar (mercury sulfide) were used for producing red lacquer. Lacquer...
- (ferrous sulfate). Some maintained calcanthum to be the same thing as colcothar, while others believed it was simply vitriol (sulfuric acid).[citation...
- translated as Latin markasita; see also marchasita in section G §71 Latin. Colcothar, Tutty, and Zarnich are three obsolete English names originating in medieval...
- called Substantia Ferrea Vitrioli as an improvement on the Paracelsan colcothar. One of Sala's primary areas of study concerned chemical identity and...