Researches on Cellulose 1895-1900, Volumen1Longmans, Green, and Company, 1901 - 180 páginas |
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Página 48
... extract was neutral to test papers , yet the residue was acid in character . It contained combined nitric groups , fused below 200 ° giving off acid vapours , and afterwards burning with a smoky flame . On adding lead acetate to the ...
... extract was neutral to test papers , yet the residue was acid in character . It contained combined nitric groups , fused below 200 ° giving off acid vapours , and afterwards burning with a smoky flame . On adding lead acetate to the ...
Página 50
... extracting with ether , alcohol , benzene , & c . ; these compounds , however , are soluble in the solvents of highly nitrated cellulose such as acetone , acetic ether , pyridine , & c . , even when these liquids are so diluted with ...
... extracting with ether , alcohol , benzene , & c . ; these compounds , however , are soluble in the solvents of highly nitrated cellulose such as acetone , acetic ether , pyridine , & c . , even when these liquids are so diluted with ...
Página 87
... extract , after neutralisation , is allowed to evaporate to a syrup , and crystal- lisation promoted either by rubbing with a glass rod , or by the more certain and highly characteristic method of ' sowing ' with the most minute trace ...
... extract , after neutralisation , is allowed to evaporate to a syrup , and crystal- lisation promoted either by rubbing with a glass rod , or by the more certain and highly characteristic method of ' sowing ' with the most minute trace ...
Página 96
... extract is washed on a filter with hot water , and extracted with Schweizer's reagent . When the final residue ( lignin ) is subjected to prolonged extraction with boiling dilute ammonia ( a suitable apparatus is described , with sketch ) ...
... extract is washed on a filter with hot water , and extracted with Schweizer's reagent . When the final residue ( lignin ) is subjected to prolonged extraction with boiling dilute ammonia ( a suitable apparatus is described , with sketch ) ...
Página 99
Charles Frederick Cross. weight in calculating to ' pure cellulose . ' The subjoined extract will illustrate these main lines of investigation Crude Fibre Pure Cellulose Hoffmeister , Raw Material Weende Hoffmeister modified by Method ...
Charles Frederick Cross. weight in calculating to ' pure cellulose . ' The subjoined extract will illustrate these main lines of investigation Crude Fibre Pure Cellulose Hoffmeister , Raw Material Weende Hoffmeister modified by Method ...
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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