Chemical News and Journal of Industrial Science, Tomy 115-116Chemical news office., 1917 |
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Strona 20
... sulphide , even after standing over night . Again , a mixture of stannous sulphate with a small amount of ferric sulphate , strongly acidified with sulphuric acid and coloured red by thiocyanate , retained its colour for many hours ...
... sulphide , even after standing over night . Again , a mixture of stannous sulphate with a small amount of ferric sulphate , strongly acidified with sulphuric acid and coloured red by thiocyanate , retained its colour for many hours ...
Strona 24
... sulphides and polysulphides of sodium are formed . A small quantity of sulphur is oxid- ised by the oxygen set free from the ... sulphide . No. 18 , October 30 , 1916 . Semicarbazones of a - Ketonic Acids . a - Di - iodo and Di - bromo ...
... sulphides and polysulphides of sodium are formed . A small quantity of sulphur is oxid- ised by the oxygen set free from the ... sulphide . No. 18 , October 30 , 1916 . Semicarbazones of a - Ketonic Acids . a - Di - iodo and Di - bromo ...
Strona 51
... . They apply only to normal cases , that is , to those in which the progress of the reaction is not interfered with by mechanical effects , such as insoluble coatings and the like . 3. Method of Spring , applicable to Sulphides . -
... . They apply only to normal cases , that is , to those in which the progress of the reaction is not interfered with by mechanical effects , such as insoluble coatings and the like . 3. Method of Spring , applicable to Sulphides . -
Strona 52
... sulphide hydrosol by treating a kaolin suspension containing lead acetate with H2S , in which case the kaolin and lead sulphide are precipitated as in Buletin of the School of Mines and Metallurgy , University of CHEMICAL NEWS , Feb. 2 ...
... sulphide hydrosol by treating a kaolin suspension containing lead acetate with H2S , in which case the kaolin and lead sulphide are precipitated as in Buletin of the School of Mines and Metallurgy , University of CHEMICAL NEWS , Feb. 2 ...
Strona 54
... sulphide time of their disposition . Description of Jasperoid of South - west Missouri . This substance has been called quartzite by Schmidt , cherokite by Jenney , jasperite by Jenney and Shepard , secondary chert by Winslow and by ...
... sulphide time of their disposition . Description of Jasperoid of South - west Missouri . This substance has been called quartzite by Schmidt , cherokite by Jenney , jasperite by Jenney and Shepard , secondary chert by Winslow and by ...
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