Researches on Cellulose 1895-1900, Volumen1Longmans, Green, and Company, 1901 - 180 páginas |
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Página 4
Charles Frederick Cross. point out , is entirely determined on the question of aggregate weight or yield , and without reference to the ultimate compo- sition or constitution of the final product . None of the available criteria are ...
Charles Frederick Cross. point out , is entirely determined on the question of aggregate weight or yield , and without reference to the ultimate compo- sition or constitution of the final product . None of the available criteria are ...
Página 12
... weight are wanting . Therefore , we cannot determine the relationship of a given product of decomposition to the parent molecule save by means of a quantitative mass - propor- tion . Physical criteria are only of determining value when ...
... weight are wanting . Therefore , we cannot determine the relationship of a given product of decomposition to the parent molecule save by means of a quantitative mass - propor- tion . Physical criteria are only of determining value when ...
Página 14
... weight of the ash may be neglected in nearly all quantitative experiments [ Fresenius , Ztschr . Anal . Chem . 1883 , 241 ] . It represents usually about 1000 mgr . per 1 sq . cm . of area of the paper . The form of an ' ash , ' derived ...
... weight of the ash may be neglected in nearly all quantitative experiments [ Fresenius , Ztschr . Anal . Chem . 1883 , 241 ] . It represents usually about 1000 mgr . per 1 sq . cm . of area of the paper . The form of an ' ash , ' derived ...
Página 17
... weight 8-9 p.ct .; filter paper , 6-7.5 p.ct. , and the latter treated a second time loses a further 4-5 p.ct. It is clear , therefore , that the process is of purely empirical value . C Schulze . This process gave a yield of 47.6 p.ct ...
... weight 8-9 p.ct .; filter paper , 6-7.5 p.ct. , and the latter treated a second time loses a further 4-5 p.ct. It is clear , therefore , that the process is of purely empirical value . C Schulze . This process gave a yield of 47.6 p.ct ...
Página 18
... weight , much less therefore than in the preceding case . Hönig's method of heating with glycerin to 210 ° was found to yield products very far removed from ' cellulose . ' The process may have a certain value in estimations of ' crude ...
... weight , much less therefore than in the preceding case . Hönig's method of heating with glycerin to 210 ° was found to yield products very far removed from ' cellulose . ' The process may have a certain value in estimations of ' crude ...
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acetic acetone action alcohol aldehydic alkaline ammonia B.Sc benzoate bleached boiling C. F. CROSS carbohydrates carbon cellulose nitrates Chem chemical CHEMISTRY chlorine College collodion Coloured compounds condensation constitution cotton Cross and Bevan Crown 8vo denitration derivatives dextrose Diagrams dibenzoate digestion dilute dissolved ELEMENTARY Engineering ester ester reaction ether extract fermentation fibre fibrous furfural furfural-yielding furfuroids grms groups heating hemicellulose hexoses hydrate hydrazone hydrolysis Illustrations industrial insoluble investigation isolated jute ketoses lignocellulose lignone LL.D Lond lustra-celluloses mercerisation method molecular molecule NaOH nitric acid nitrocellulose normal cellulose numbers obtained ordinary original osazone oxidation oxidised oxycellulose p.ct paper patent pentosanes pentoses PHYSIOLOGY plant Plates PRACTICAL precipitated Professor proportion purified quantitative reagent residue Royal 8vo Science Scientific Works published silk soda soluble solution solvents starch structural substance sulphocarbonate sulphuric acid temperature thread tion tissue Tollens treated treatment Tussah viscose weight wood Woodcuts yield