British Abstracts: Pure chemistry and physiology. ser. A1926 |
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... acid at 120 ° ; allyl ether , with 20 % of sulphuric acid trihydrate at 105 ° . With increase in mol . wt . less acid is required to accomplish etherification and secondary require less acid than primary alcohols . L. H. HEWITT . I ...
... acid at 120 ° ; allyl ether , with 20 % of sulphuric acid trihydrate at 105 ° . With increase in mol . wt . less acid is required to accomplish etherification and secondary require less acid than primary alcohols . L. H. HEWITT . I ...
Trang 47
... acid without any reduction of the unsaturated acids . The fatty acids are isolated from the hydrazides by heating with dilute sulphuric acid and benzaldehyde . Palmityl- phenylhydrazide , m . p . 110-5 ° , is prepared by heating the acid ...
... acid without any reduction of the unsaturated acids . The fatty acids are isolated from the hydrazides by heating with dilute sulphuric acid and benzaldehyde . Palmityl- phenylhydrazide , m . p . 110-5 ° , is prepared by heating the acid ...
Trang 48
... acid or in the presence of a large excess of hydrochloric acid , yield- ing crystalline substances which are soluble in alkali and are provisionally regarded as hydrazones of the type CO , Et - CO - C ( COMe ) : N - NHAr . Benzenediazon ...
... acid or in the presence of a large excess of hydrochloric acid , yield- ing crystalline substances which are soluble in alkali and are provisionally regarded as hydrazones of the type CO , Et - CO - C ( COMe ) : N - NHAr . Benzenediazon ...
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... acid ( barium salt + H2O ) . 180-185 ° / 5 mm . , was obtained from both isomerides , in 64 % yield . When treated with hydrochloric acid , this product afforded the imide CH , CO- CO , H - CH , CMe 2 CH , CO NH , m . p . 155-156 ...
... acid ( barium salt + H2O ) . 180-185 ° / 5 mm . , was obtained from both isomerides , in 64 % yield . When treated with hydrochloric acid , this product afforded the imide CH , CO- CO , H - CH , CMe 2 CH , CO NH , m . p . 155-156 ...
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... acid to d - lævulose and dextrosephosphoric acid . J. HATANO ( Biochem . Z. , 1925 , 159 , 175-178 ) .- Sucrosemonophosphoric acid is warmed with dilute sulphuric acid until the first traces of free phosphoric acid appear ...
... acid to d - lævulose and dextrosephosphoric acid . J. HATANO ( Biochem . Z. , 1925 , 159 , 175-178 ) .- Sucrosemonophosphoric acid is warmed with dilute sulphuric acid until the first traces of free phosphoric acid appear ...
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A. A. ELDRIDGE absorption acetic acid acetic anhydride acetone action activity adsorption alcohol alkali aluminium aluminium chloride Amer ammonia ammonium anhydride aqueous solution atoms barium benzene benzyl Biochem boiling bromide calcium carbon dioxide catalyst Chem chemical chim chloric acid colloidal colour compounds concentration condensation containing converted copper corresponding crystallisation crystals curve decomp decomposition derivatives determined dextrose dilute dissociation effect electrolytes electrons ester ether ethyl ethyl alcohol F. G. WILLSON formation formed gives heated hydrate hydrazine hydrochloric acid hydrogen chloride hydrolysis increase iodide iodine ionisation ions ketone liquid magnesium mercury metals method mixture molecular molecules nickel nitrate nitric acid nitrogen obtained oxalate oxide oxidised oxygen P. W. CLUTTERBUCK phenyl Physik platinum potassium potassium hydroxide precipitate prepared presence pressure protein pyridine reaction reduced salt semicarbazone silver sodium hydroxide sols solubility spectra substances sulphate sulphide sulphuric acid temperature vapour whilst yields zinc