Chemical News and Journal of Industrial Science, Tomy 99-100Chemical news office., 1909 |
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Strona 1
... Treating with hydrofluoric acid or fusing with potas- sium bifluoride ( W. Gibbs , Lawrence Smith , and Marignac ) . 4. Treating finely powdered minerals mixed with carbon with chlorine at a red heat ( Ste . - Claire Deville ) . 5 ...
... Treating with hydrofluoric acid or fusing with potas- sium bifluoride ( W. Gibbs , Lawrence Smith , and Marignac ) . 4. Treating finely powdered minerals mixed with carbon with chlorine at a red heat ( Ste . - Claire Deville ) . 5 ...
Strona 2
... treating with acid . Time taken . KOH used . Colour of acids on ignition . Hours . Grms . Grms . First fusion . 3 ΙΟ ... treated repeatedly with hydric sulphide . METHOD NO . 4. - This process for opening up tantalites , niobites , & c ...
... treating with acid . Time taken . KOH used . Colour of acids on ignition . Hours . Grms . Grms . First fusion . 3 ΙΟ ... treated repeatedly with hydric sulphide . METHOD NO . 4. - This process for opening up tantalites , niobites , & c ...
Strona 3
... treated with alkali bisulphates , the tin and tungsten certainly , and the antimony and germanium probably , become so firmly united to the tantalic - niobic acids that their separation becomes a matter of extreme difficulty . Berzelius ...
... treated with alkali bisulphates , the tin and tungsten certainly , and the antimony and germanium probably , become so firmly united to the tantalic - niobic acids that their separation becomes a matter of extreme difficulty . Berzelius ...
Strona 8
... treated in the usual manner for the gravimetric estimation of potassium . The other aliquots of VII . were evaporated to dryness and gently ignited to remove any ammonium chloride present and to char the organic matter . The residues ...
... treated in the usual manner for the gravimetric estimation of potassium . The other aliquots of VII . were evaporated to dryness and gently ignited to remove any ammonium chloride present and to char the organic matter . The residues ...
Strona 11
... treated in this way have been kept under water in vessels open to the contact of air and carbonic acid for many ... treated , including the manufacture of acids , salt - cake , sodium carbonate , clay , glass , & c . , while the analyses ...
... treated in this way have been kept under water in vessels open to the contact of air and carbonic acid for many ... treated , including the manufacture of acids , salt - cake , sodium carbonate , clay , glass , & c . , while the analyses ...
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acetic action alcohol alkali ammonia ammonium amount analysis antimony apparatus aqueous atomic weight B.Sc Bakelite barium boiling calcium calculated carbon cent Chem chemical Chemistry chloride colour columbite compounds concentration condensation containing copper crucible crystallisation decomposed derivatives determined dilute dioxide dissolved distilled effect electric electrodes electrolytic elements equation ether ethyl evaporated experiments extract filtered flask flour formed formula gases gives graphite grms guncotton heated hydrate hydrochloric acid hydrofluoric acid hydrogen hydroxide investigation iodine iron laboratory liquid metal method mgrm mineral mixture molecular molecules nitrate nitric acid nitrogen nitroglycerin observed obtained ordinary osmotic pressure oxalic oxalic acid oxide oxidised oxygen paper phenol platinum potassium precipitate prepared present Prof pure quantity radio-active radium reaction residue salt scandium shown silver Society sodium soluble solution solvent substance sulphate sulphide sulphuric acid tantalite tantalum tellurium temperature tion tube vapour volume yield