| borax | A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colours on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O. Borax bead. <chemistry> See Bead. Origin: OE. Boras, fr. F. Borax, earlier spelt borras; cf. LL. Borax, Sp. Borraj; all fr. Ar. Brag, fr. Pers. Brah. Source: Websters Dictionary (01 Mar 1998) |
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| Best's carmine stain | <technique> A method for the demonstration of glycogen in tissues. (05 Mar 2000) |
| carmine | <chemical> Colouring matter from the insect coccus cacti l. It is used in foods, pharmaceuticals, toiletries, etc., as a dye, and also has use as a microscopic stain and biological marker. Pharmacological action: dyes, food colouring agents. Chemical name: 2-Anthracenecarboxylic acid, 7-beta-D-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo- (12 Dec 1998) |
| indigo carmine | <chemical> 3,3'-dioxo-(delta-2,2'-biindoline)-5,5'-disulfonic acid disodium salt. An indolesulfonic acid that is used as a dye in renal function testing and as a reagent for the detection of nitrates and chlorates and in the testing of milk. Pharmacological action: dyes, indicators and reagents, renal agents. Chemical name: 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt (12 Dec 1998) |
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