Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3750Chemical news office., 1932 |
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Strona 130
... became apparent that the blackness was no necessary proof of the presence of lead . Neumann tested oils for lead with a solution of orpiment , observing that " if it have any saturnine taint , it will appear of an orange red colour ...
... became apparent that the blackness was no necessary proof of the presence of lead . Neumann tested oils for lead with a solution of orpiment , observing that " if it have any saturnine taint , it will appear of an orange red colour ...
Strona 131
... became realised that it could be used as some sort of a test for lime . In 1776 Scheele pre- pared oxalic acid by oxidising sugar with nitric acid , and this product , known as Acid of Sugar , became widely used as a test for Lime . The ...
... became realised that it could be used as some sort of a test for lime . In 1776 Scheele pre- pared oxalic acid by oxidising sugar with nitric acid , and this product , known as Acid of Sugar , became widely used as a test for Lime . The ...
Strona 136
... became insoluble in pyridine ( comp . fucosite ) and in chloroform ( comp . algar- ite ) after a period of nine months . In another experiment the bituminous shale - like seep ( sample No. 6 ) was subjected to a similar treatment ...
... became insoluble in pyridine ( comp . fucosite ) and in chloroform ( comp . algar- ite ) after a period of nine months . In another experiment the bituminous shale - like seep ( sample No. 6 ) was subjected to a similar treatment ...
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