Difference between revisions of "Guaiac"

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-== Description ==
-A greenish-brown resin obtained from trees of the species ''Guaiacum santum'' and ''Guaiacum officinale'' native to Mexico and the West Indies.  The pleasant smelling resin contains guaiac acid, vanillin, guaiac yellow, and guaiac saponin.  Guaiac is used in flavorings, medicines and varnishes.  It is also used to make Pagenstecher's paper for the detection of trace levels of hydrogen cyanide.  While filter paper is impregnated with an alcoholic solution of guaiac, dried then coated with an aqueous solution of copper sulfate.  The paper turns blue in the presence of hydrogen cyanide.
-== Synonyms and Related Terms ==
-''Guaiacum santum; Guaiacum officinale''; goma de guayaco (Esp.); bois de guaiac (Fr.); guaiaco (It);  guaiac gum; guaiac resin; guaiacum; gum guaiac
-== Other Properties ==
-Soluble in ethanol, ether, acetone, chloroform and alkali.Slightly soluble in benzene and carbon disulfide.
-[[Category:Materials database]]

Revision as of 06:47, 24 July 2013