Chemical News and Journal of Industrial Science, Tomy 119-120Chemical news office., 1919 |
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Strona 5
... colour deepened through No. 4 , after which it faded ; the oxalates of fractions 19 and 20 were almost white . The oxides were of a brownish yellow colour , which deepened to fraction 4 and then gradually became lighter . change of ...
... colour deepened through No. 4 , after which it faded ; the oxalates of fractions 19 and 20 were almost white . The oxides were of a brownish yellow colour , which deepened to fraction 4 and then gradually became lighter . change of ...
Strona 10
... colour , and a soluble compound of this type has been prepared by coupling glucose with parahydrazine - benzoic acid . The sodium salt of glucose - phenyl - osazone - para - carboxylic acid pre- pared in this way , proving to be a very ...
... colour , and a soluble compound of this type has been prepared by coupling glucose with parahydrazine - benzoic acid . The sodium salt of glucose - phenyl - osazone - para - carboxylic acid pre- pared in this way , proving to be a very ...
Strona 20
... coloured earths erbium , holmium , and thulium were present in preponderating amount in the first four fractions and ... Colour of oxalates was pink in first fraction , becoming gradually lighter ; last three fractions were pure white ...
... coloured earths erbium , holmium , and thulium were present in preponderating amount in the first four fractions and ... Colour of oxalates was pink in first fraction , becoming gradually lighter ; last three fractions were pure white ...
Strona 21
... colour . ( b ) Very dark brown oxide . Atomic Weight of Original 98.94 Ho 1 2 3 Atomic Weights 110 106 102 98 Nd 94 ... coloured earths in the earlier fractions , and of yttrium in of yttrium earths yielded rapid concentration of the the ...
... colour . ( b ) Very dark brown oxide . Atomic Weight of Original 98.94 Ho 1 2 3 Atomic Weights 110 106 102 98 Nd 94 ... coloured earths in the earlier fractions , and of yttrium in of yttrium earths yielded rapid concentration of the the ...
Strona 24
... colour which appears especially in aqueous solution suggests the forma- tion of a dithio or carbithio acid . If the substance is boiled with strong aqueous potash the colour disappears and on cooling colourless needles crystallise out ...
... colour which appears especially in aqueous solution suggests the forma- tion of a dithio or carbithio acid . If the substance is boiled with strong aqueous potash the colour disappears and on cooling colourless needles crystallise out ...
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