Journal of the Chemical Society, Part 1The Society., 1947 |
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Page 33
... substance . 2.0 The substance B is less soluble in water , alcohol and moist ether than gallocatechin , very sparingly soluble in dry ether , and insoluble in chloroform and hydrocarbons . It gives the pine- shaving test for ...
... substance . 2.0 The substance B is less soluble in water , alcohol and moist ether than gallocatechin , very sparingly soluble in dry ether , and insoluble in chloroform and hydrocarbons . It gives the pine- shaving test for ...
Page 35
Chemical Society (Great Britain). - Gallocatechin ( Substance C ) .- Fraction ( c ) ( 0.5 g . ) was dissolved in water at 70 ° ( 3 c.c. ) , and the substance C crystallised in minute white needles , decomp . 217-218 ° , [ a ] 32 ° — 60 ...
Chemical Society (Great Britain). - Gallocatechin ( Substance C ) .- Fraction ( c ) ( 0.5 g . ) was dissolved in water at 70 ° ( 3 c.c. ) , and the substance C crystallised in minute white needles , decomp . 217-218 ° , [ a ] 32 ° — 60 ...
Page 36
... substance B ( cross section < 1 μ ) were too small for the production of single - crystal oscillation photographs , and as the fibres did not exhibit parallel growth , fibre patterns could not be obtained . The prismatic crystals of ...
... substance B ( cross section < 1 μ ) were too small for the production of single - crystal oscillation photographs , and as the fibres did not exhibit parallel growth , fibre patterns could not be obtained . The prismatic crystals of ...
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Common terms and phrases
acetic anhydride acetone acetyl added alkaline Amer amidine amine ammonia ammonium aqueous sodium atoms benzene boiling bromide Calc CH₂ charcoal Chem chloroform colourless needles compound concentrated hydrochloric acid condensation cooled crystallised crystallised from alcohol crystals cyanide decomp derivative diazotised dilute dissolved distilled dried ester ethyl acetate experimental extracted with ether filtered filtrate formed Found fraction gave give m. p. H₂O heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated light petroleum m. p. and mixed methanol Methiodide method methyl alcohol minutes mixed m. p. molecular molecule nitration nitric acid obtained oxidation pale yellow petroleum b. p. phenyl picrate polymer polymerisation potassium precipitate prepared prisms pyridine reduced pressure refluxed removed requires residue room temperature salt separated sodium carbonate sodium hydroxide solid soluble solvent stirred structure substance sulphate sulphide sulphone sulphuric acid washed yellow needles yield