Blowpipe Analysis |
From inside the book
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Page 27
... remains behind . These vapours are partly deposited on the cooler portion of the charcoal , forming incrustations which afford indications . of very great importance as to the nature of the substance under examination . Care must be ...
... remains behind . These vapours are partly deposited on the cooler portion of the charcoal , forming incrustations which afford indications . of very great importance as to the nature of the substance under examination . Care must be ...
Page 31
... remains fluid for a considerable time after the flame is removed , and some- times deposits a brown incrustation in its neighbour- hood . On aluminium plate , a copious white incrustation is first produced , which , as the temperature ...
... remains fluid for a considerable time after the flame is removed , and some- times deposits a brown incrustation in its neighbour- hood . On aluminium plate , a copious white incrustation is first produced , which , as the temperature ...
Page 52
... remains clear on cooling if the carbonate has not been added in too great excess [ No. 51 ] . Titanium dioxide fuses and gives a glass which is dark yellow when hot ; on cooling this becomes turbid and crystalline . Tungsten trioxide ...
... remains clear on cooling if the carbonate has not been added in too great excess [ No. 51 ] . Titanium dioxide fuses and gives a glass which is dark yellow when hot ; on cooling this becomes turbid and crystalline . Tungsten trioxide ...
Page 64
... remains behind as a compact crust which can then be treated in the flame without any difficulty . METHOD OF EXAMINATION . A. Behaviour on Heating . 69. On heating the substance the following appearances may be looked for : ( 1 ) Whether ...
... remains behind as a compact crust which can then be treated in the flame without any difficulty . METHOD OF EXAMINATION . A. Behaviour on Heating . 69. On heating the substance the following appearances may be looked for : ( 1 ) Whether ...
Page 77
... remains is usually brittle and black , and yields with borax in the oxidizing flame a pearl which is green when hot and blue on cooling ; in the reducing flame this does not always become brown and opaque as might be expected , but ...
... remains is usually brittle and black , and yields with borax in the oxidizing flame a pearl which is green when hot and blue on cooling ; in the reducing flame this does not always become brown and opaque as might be expected , but ...
Common terms and phrases
acid potassium sulphate aluminium plate antimony arsenic arsenic trioxide assay bismuth Bismuth oxide blowpipe bluish-green borax Borax bead Borax on Platinum boric acid bromine brown Cambridge charcoal chloride chromium clear glass cobalt Cobalt Solution cold colour colourless compounds containing cooling copper Crown 8vo detected dioxide dissolved Edition ELEMENTARY TREATISE English Extra fcap film flame-colouration flux Forceps formed fused fusible glass becomes GREEK grey heated on charcoal hydrochloric acid incrustation iodide iron John's College late Fellow LATIN lead mass matrass mercury metallic bead METALLIC OXIDES microcosmic bead microcosmic salt moistened nickel nitrate nitric acid numerous Illustrations obtained odour opaque Owens College oxidizing flame Platinum Wire potassium sulphate powder Professor reactions reddish-brown reducing flame Salt on Platinum saturated School selenium silica silver small quantity sodium carbonate sublimate sulphide sulphuric acid tellurium Tellurium dioxide tion trioxide violet volatile whilst hot yellow yellowish yellowish-green yield zinc
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