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Page 2350
... sodium hydroxide . In an experiment with lignin ( 300 mg . ) , fraction C , after evaporation and recrystallisation from hot water ( 1 · 5 c.c. ) yielded p - hydroxybenzoic acid ( 20.6 mg . ) , m . p . 208-210 ° . Vacuum- sublimation ...
... sodium hydroxide . In an experiment with lignin ( 300 mg . ) , fraction C , after evaporation and recrystallisation from hot water ( 1 · 5 c.c. ) yielded p - hydroxybenzoic acid ( 20.6 mg . ) , m . p . 208-210 ° . Vacuum- sublimation ...
Page 2698
... sodium hydroxide ( 80 ml . ) were left at 20 ° for 2 days . The clear solution was boiled , adjusted to pH 5 , and filtered at 100 ° . The precipitate was purified through the hydrochloride as above ( yield , 0.15 g . ) . Action of Sodium ...
... sodium hydroxide ( 80 ml . ) were left at 20 ° for 2 days . The clear solution was boiled , adjusted to pH 5 , and filtered at 100 ° . The precipitate was purified through the hydrochloride as above ( yield , 0.15 g . ) . Action of Sodium ...
Page 2997
... Sodium Hydroxide . - A solution of purpurogenone ( 0.13 g . ) in 2N - sodium hydroxide ( 5 c.c. ) was heated , with free access of air , on the steam - bath for 2 hr . , the water lost by evaporation being replaced from time to time ...
... Sodium Hydroxide . - A solution of purpurogenone ( 0.13 g . ) in 2N - sodium hydroxide ( 5 c.c. ) was heated , with free access of air , on the steam - bath for 2 hr . , the water lost by evaporation being replaced from time to time ...
Contents
2 4Trimethylpentane | 2082 |
Cinnolines Part XXXIV 5 6 and 7Hydroxy and 5 6 and 7Aminocinnolines | 2100 |
The Conductometric Evaluation of the Ionisation Functions of the Monohalogenoacetic | 2104 |
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absorption acetic anhydride acetone acetyl added alcohol alkaline Amer ammonia atom band benzene boiling bromine Calc carbon carbonyl Chem chloride chloroform colour colourless compound concentrated cooled crystallised crystals decomp derivative diethyl dilute dioxide dissolved distilled dried eluted ester ethanol ethylene evaporated filtered fluoride formed Found fraction gave give glacial acetic acid H₂O heated hydrochloric acid hydrogen hydrogen bromide hydrogen chloride hydrolysis infrared isolated ketone lanthanons light petroleum b. p. liquid lithium aluminium hydride m. p. and mixed method methyl mixed m. p. mixture mole needles nickel nitrate nitric nitryl fluoride obtained oxidation oxygen peroxide potassium hydroxide precipitate prepared pressure prisms pteridine pyridine reaction reduction refluxed Reprint Order requires residue resin room temperature sodium hydroxide solid soluble solution solvent spectra spectrum structure sulphuric acid Table tube ultraviolet vacuo washed yellow yield