Quarterly Journal of the Chemical Society of London, Part 3 |
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Page 2732
... fraction of lecithin of 0-2 or less . With sols having a weight fraction of lecithin between 0-2 and 0.3 much greater difficulty was experienced , whilst with sols having a weight fraction between 0 · 3 and 0 · 6 it was impossible to ...
... fraction of lecithin of 0-2 or less . With sols having a weight fraction of lecithin between 0-2 and 0.3 much greater difficulty was experienced , whilst with sols having a weight fraction between 0 · 3 and 0 · 6 it was impossible to ...
Page 2794
... Fraction 1 ( 116 mg . ) , m . p . 98 ° ( from acetone ) , undepressed by cholesteryl bromide , m . p . 96 ° ; fraction 2 ( 14 mg . ) , m . p . 98-99 ° ( from acetone ) , but some crystals had m . p . ~ 112 ° . Expt . 2. Fraction 1 ( 195 ...
... Fraction 1 ( 116 mg . ) , m . p . 98 ° ( from acetone ) , undepressed by cholesteryl bromide , m . p . 96 ° ; fraction 2 ( 14 mg . ) , m . p . 98-99 ° ( from acetone ) , but some crystals had m . p . ~ 112 ° . Expt . 2. Fraction 1 ( 195 ...
Page 3075
... fraction . Unless other- wise stated , specific rotations were measured in water at 20 ° . 19 Materials . The trisodium derivative was prepared as described in Part I and gave the following analysis : sodium , 16.4 ; sucrose ( as ...
... fraction . Unless other- wise stated , specific rotations were measured in water at 20 ° . 19 Materials . The trisodium derivative was prepared as described in Part I and gave the following analysis : sodium , 16.4 ; sucrose ( as ...
Contents
ABEL E W Bennett M A and Wilkinson G | 2323 |
Bourne E J Hartigan J and Weigel H | 2332 |
Clark E R | 2344 |
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Common terms and phrases
1,3,5-trinitrobenzene absorption acetic acid acetic anhydride acetone added alcohol alkaline alkyl Amer amine ammonia anhydride atom benzene boiling bond bromide Calc carbon Chem chloride chloroform chromatography complex compound concentration constant cooled crystallised crystals curve decomp derivatives diethylamine dilute dimer dioxan dioxide dissolved distilled dried eluted ester ethanol evaporated filtered filtrate formation formed Found fraction gave give glycollic acid glyoxylic acid heated hydride hydrochloric acid hydrolysis hydroxide infrared infrared spectrum iodide isolated isomer K₁ light petroleum b. p. lithium lithium aluminium hydride m. p. and mixed methyl methyl iodide mixed m. p. mixture mole molecular molecule nitrogen obtained oxidation oxygen perchlorate picrate polymer potassium precipitate prepared prisms pyridine reaction reduced refluxed requires residue room temperature salt sodium hydroxide solid solvent spectra stirred structure sulphuric acid Table titration ultraviolet values washed yield