Journal of the Chemical SocietyThe Society., 1949 |
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Page 1108
... absorption being more intense with the unstable forms , and the shorter - wave absorption stronger with the stable forms . The o - nitro - compounds are the only exception to this . The situation seems similar to that already known for ...
... absorption being more intense with the unstable forms , and the shorter - wave absorption stronger with the stable forms . The o - nitro - compounds are the only exception to this . The situation seems similar to that already known for ...
Page 1125
... absorption maximum was at 6080 a . substance considerably desensitised a photographic plate and did not confer extra - sensitivity . [ 5- ( 3 - Ethylrhodanine ) ] [ 2- ( 3 - ethylbenzthiazoline ) ] [ BB ' - dimethin - 2 ′ - ( 3 ...
... absorption maximum was at 6080 a . substance considerably desensitised a photographic plate and did not confer extra - sensitivity . [ 5- ( 3 - Ethylrhodanine ) ] [ 2- ( 3 - ethylbenzthiazoline ) ] [ BB ' - dimethin - 2 ′ - ( 3 ...
Page 1499
... absorption spectrum in the ultra- violet , with maxima at approximately 2390 , 2840 , and 3040 A .; methyl 4 - aminosalicylate shows a similar absorption spectrum . 4 - Hydroxyanthranilic acid and its methyl ester , on the other hand ...
... absorption spectrum in the ultra- violet , with maxima at approximately 2390 , 2840 , and 3040 A .; methyl 4 - aminosalicylate shows a similar absorption spectrum . 4 - Hydroxyanthranilic acid and its methyl ester , on the other hand ...
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Common terms and phrases
4-dinitrophenylhydrazone absorption acetic anhydride acetone acetyl acidified added aldehyde alkaline aluminium chloride Amer amine ammonia aniline aqueous sodium atom benzene boiling bromine Calc carbon catalyst CH₂ Chem chloroform citrinin colourless needles compound condensation containing cooled crystallised crystallised from alcohol crystals cyanide cyclisation decomp derivative dilute dissolved distilled dried electrode ester evaporated extracted with ether filtered filtrate formed colourless Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide isolated ketone lactone light petroleum b. p. m. p. and mixed methanol method methyl alcohol minutes mixed m. p. mixture molecule obtained oxide phenol phosphoric picrate potassium hydroxide precipitate prepared pyridine reaction reduced pressure requires residue resin room temperature salt separated sodium hydroxide solid soluble solution solvent specimen structure substance sulphuric acid triethylamine values washed yellow needles yield