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Experimental Part 33
Chlorination of slash pine sulphate pulp
6 other sections not shown
absolute alcohol acidified ALCOHOL EXTRACTED alcoholic solution alkaline amyl alcohol bark extract boiling calcium hypochlorite catechin caused cellulose chemical chlorine color of sulphite coloring matter colorless compounds cooking liquor darkened digestion dilute hydrochloric acid dilute sodium hydroxide distilled water ETHER EXTRACTED ferric chloride filtrate flavone formation fusel oil gelatin grams hot water hydrochloric acid hydrolysis indicated indicator-like insoluble iron lead acetate lead salt lightened in color lignin lignosulphonic acid material oolor oven-dry oxidation Paper Trade Jour Papier-Zeit Papierfabr percent petroleum ether phlobaphene phloroglucinol pine pulps pine sulphate pulp pine sulphate waste pine wood precipitate presence of phlobatannins produced properties pulp color pulp discoloration red color Reddening of Sulphite refluxed removed residue resin resulting slash pine heartwood slash pine sulphate sodium hydroxide soluble in hot solvents sulphate waste liquor sulphite pulp sulphuric acid tannins tne pulp treated treatment washed water extract witn WOOD PULPS yellow yield