Heat the substance with a bead of microcosmic salt or borax on a platinum wire in the oxidizing flame.
The methods of chemical analysis may be classified according to the type of reaction: (I) dry or blowpipe analysis, which consists in an examination of the substance in the dry condition; this includes such tests as ignition in a tube, ignition on charcoal in the blowpipe flame, fusion with borax, microcosmic salt or fluxes, and flame colorations (in quantitative work the dry methods are sometimes termed " dry assaying "); (2) wet analysis, in which a solution of the substance is treated with reagents which produce specific reactions when certain elements or groups of elements are present.
Titanium oxide when fused with microcosmic salt in the oxidizing flame yields a bead which is yellowish in the heat but colourless after cooling.
Magnesium ammonium Microcosmic phosphate; salt.
Tantalum pentoxide, Ta205, is a white amorphous infusible powder, or it may be crystallized by strongly heating, or by fusing with boron trioxide or microcosmic salt.
microcosmic salt: MH 2 PO 4 = MP0 3 +H 2 0, (NH 4) NaHPO 4 = NaP03+NH3+H20; they may also be obtained by acting with phosphorus pentoxide on trimetallic orthophosphates: Na3P04+P205 = 3NaP0 3.
Thus the periodical sacrifice is nothing else than a microcosmic representation of the everproceeding destruction and renewal of all cosmic life and matter.
(See Microcosmic Salt.) Ammonium sulphate (NH4)2504 is prepared commercially from the ammoniacal liquor of gas-works (see GAS: Manufacture) and is purified by recrystallization.
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