Chemical News and Journal of Industrial Science, Tomy 103-104Chemical news office., 1911 |
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Strona 13
... preparation " to take into account the possibility of its containing mesothorium . As in the case I have mentioned a useless preparation was sold with the best in- tentions , there is also the danger of deliberate adulteration . The ...
... preparation " to take into account the possibility of its containing mesothorium . As in the case I have mentioned a useless preparation was sold with the best in- tentions , there is also the danger of deliberate adulteration . The ...
Strona 20
... prepared by condensing acetoacetic ester and glycerol in the presence of sulphuric acid , a heavy yellow oil with an odour recalling that of ethyl aceto- acetate ; it boils at 157 - 160 ° / 14 mm . aß - Di- chloroacetoacetin , CH3 CO ...
... prepared by condensing acetoacetic ester and glycerol in the presence of sulphuric acid , a heavy yellow oil with an odour recalling that of ethyl aceto- acetate ; it boils at 157 - 160 ° / 14 mm . aß - Di- chloroacetoacetin , CH3 CO ...
Strona 24
... prepared by dehydrating propiolamide , HCC - CONH2 , which is obtained by the action of ammonia on propiolic methyl ester , HC C - CO2CH3 , at a temperature below 0 ° . Cyanacetylene is a mobile liquid with a strong irritating odour ...
... prepared by dehydrating propiolamide , HCC - CONH2 , which is obtained by the action of ammonia on propiolic methyl ester , HC C - CO2CH3 , at a temperature below 0 ° . Cyanacetylene is a mobile liquid with a strong irritating odour ...
Strona 45
... prepared , as it is not unalterable , a 2 per cent addition of acetic acid will prolong its sensitiveness toward the molybdate solution for one week ; alcoholic tannin is more permanent , and is suitable as an indicator . Applied to a ...
... prepared , as it is not unalterable , a 2 per cent addition of acetic acid will prolong its sensitiveness toward the molybdate solution for one week ; alcoholic tannin is more permanent , and is suitable as an indicator . Applied to a ...
Strona 53
... preparing the oxides must be fixed as defi- nitely as possible . The detailed method of preparing the mixed oxides in ... prepared from the chloride , and was exceedingly pure . Dr. Ford also supplied some tantalum oxide from Dr. W. R. ...
... preparing the oxides must be fixed as defi- nitely as possible . The detailed method of preparing the mixed oxides in ... prepared from the chloride , and was exceedingly pure . Dr. Ford also supplied some tantalum oxide from Dr. W. R. ...
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