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15 per cent 20 pounds acid specific gravity=1.84 alkaline to phenolphthalein aqueous beaker boiling BUREAU OF STANDARDS Calculate as sodium cc of water cc portions CIRCULAR color containers cool Copper sulphate crucible Deduct dilute to 500 dish dissolved in water Dry the filter equal volume ether solution Evaporate exceed extract fatty acid Fehling's Solution filter paper filtrate Free alkali freshly heat indicates the presence insoluble in alcohol insoluble in water layer liter longer alkaline matter volatile neutral nitrate solution portions of water Potassium Chromate qualitative test residue at 100 rinse rosin sample separatory funnel small amount soap sodium chloride sodium hydroxide solution solution with 20 Solution.—Dissolve Standard Silver Nitrate Standard Sodium Hydroxide steam bath sugar Sulphuric Acid taken at random three hours total matter insoluble unsaponifiable matter Unsaponified saponifiable matter volatile at 105 Wash the ether Wash the residue water and diluted weigh wrapped cake