Journal of the Chemical Society, Part 4The Society., 1949 |
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Page 2506
... solution of rare - earth and cadmium nitrates should attain a molecular ratio of 2 : 3 , the precipitation being effected at 100 ° in 3-4N - ammonium nitrate solution by the addition of 1 % ammonia solution ; fractionation is preferred ...
... solution of rare - earth and cadmium nitrates should attain a molecular ratio of 2 : 3 , the precipitation being effected at 100 ° in 3-4N - ammonium nitrate solution by the addition of 1 % ammonia solution ; fractionation is preferred ...
Page 2714
... solution was filtered and basified with ammonia . The precipitated yellow solid , collected and recrystallised from alcohol , had m . p . 191-192 ° . The acid - insoluble portion of the product was extracted by means of benzene , and ...
... solution was filtered and basified with ammonia . The precipitated yellow solid , collected and recrystallised from alcohol , had m . p . 191-192 ° . The acid - insoluble portion of the product was extracted by means of benzene , and ...
Page 3204
... solution ( pH 3.8-3.9 ) and had been isolated from sweet potatoes . They were dissolved in water ( 100 c.c. ) , and the solution was kept at 0 ° covered with a layer of toluene to maintain aseptic conditions . No a - amylase was ...
... solution ( pH 3.8-3.9 ) and had been isolated from sweet potatoes . They were dissolved in water ( 100 c.c. ) , and the solution was kept at 0 ° covered with a layer of toluene to maintain aseptic conditions . No a - amylase was ...
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Common terms and phrases
absorption acetic acid acetic anhydride acetone added alcohol alkaline aluminium chloride aluminium iodide Amer amine ammonia aqueous sodium atom benzaldehyde benzene boiling bond bromide bromine trifluoride Calc carbon CH₂ Chem chloroform colourless needles compound concentrated condensation containing cooled crystallised crystals D.Sc decomp decomposition derivatives diazotised dilute dioxan dissolved distilled dried ester ethanol ethyl alcohol extracted with ether filtered filtrate formation formed Found fraction gave Grignard reagent halide heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated ketone light petroleum b. p. liquid method methyl methyl iodide minutes mixture molecule nitrate nitrogen obtained oxidation phenol picrate potassium precipitate prepared prisms pyridine reaction reagent recrystallised from ethanol reduced pressure removed requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent sulphate sulphone sulphuric acid synthesis Table tube values washed yield