Researches on Cellulose 1895-1900, Volumen1Longmans, Green, and Company, 1901 - 180 páginas |
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Página 16
... digestion with dilute nitric acid , with addition of chlorate - has been largely employed , though the composition of the product is more or less divergent from a ' pure cellulose . ' Dilute nitric acid at 60-80 ° ( Cross and Bevan ) ...
... digestion with dilute nitric acid , with addition of chlorate - has been largely employed , though the composition of the product is more or less divergent from a ' pure cellulose . ' Dilute nitric acid at 60-80 ° ( Cross and Bevan ) ...
Página 17
... digestion for fourteen days with dilute nitric acid with addition of chlorate ( Schulze ) . The mass was washed and digested with alkaline lye ( 1-25 p.ct. KOH ) , and exhaustively washed , treated with dilute acetic acid ; again washed ...
... digestion for fourteen days with dilute nitric acid with addition of chlorate ( Schulze ) . The mass was washed and digested with alkaline lye ( 1-25 p.ct. KOH ) , and exhaustively washed , treated with dilute acetic acid ; again washed ...
Página 20
... digestion at or about 100 ° with the concentrated reagent is required . The dissolution of the . cellulose is not a simple phenomenon , but is attended with hydrolysis and a certain degree of condensation . The latter result is ...
... digestion at or about 100 ° with the concentrated reagent is required . The dissolution of the . cellulose is not a simple phenomenon , but is attended with hydrolysis and a certain degree of condensation . The latter result is ...
Página 38
... digested with the half- saturated solution for 12 hours in a closed flask . The following results with specimens of mono- and diben- zoate , purified , as far as possible , may be cited : Saponification results Calc . CH.COOH Calc ...
... digested with the half- saturated solution for 12 hours in a closed flask . The following results with specimens of mono- and diben- zoate , purified , as far as possible , may be cited : Saponification results Calc . CH.COOH Calc ...
Página 45
... digested for 24 hours in an acid mixture containing in 100 parts HNO3-24 : H2SO4-70 : H2O - 6 : the proportion of acid to cellulose being 60 : 1- . After careful purification the products were analysed with the following results ...
... digested for 24 hours in an acid mixture containing in 100 parts HNO3-24 : H2SO4-70 : H2O - 6 : the proportion of acid to cellulose being 60 : 1- . After careful purification the products were analysed with the following results ...
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Términos y frases comunes
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