000 02177nab a2200337 c 4500
001 vtls000526248
003 RU-ToGU
005 20210907024114.0
007 cr |
008 181202|2015 sz s a eng dd
024 7 _a10.4028/www.scientific.net/AMR.1085.74
_2doi
035 _ato000526248
040 _aRU-ToGU
_brus
_cRU-ToGU
245 1 0 _aGlyoxylic acid separation from products of glyoxal oxidation in the form of its calcium salt
_cM. A. Pozdnyakov, K. V. Rubtsov, L. A. Rasskazova, A. Filimoshkin
520 3 _aSynthesis of glyoxylic acid was carried out by oxidation of glyoxal aqueous solutions by nitric acid. Glyoxylic acid and oxalic acid (as a by-product) were isolated from technological mixtures in the form of their calcium salts in a strictly defined region of pH. Previously, model calcium salts were synthesized from the commercial acids as reference objects. The results of infrared spectroscopy and complexometric titration of precipitates of calcium salts of glyoxylic and oxalic acids, isolated in various pH regions, allow one to construct reliable research strategies of complex mixtures, such as obtained from the oxidation products of aqueous solutions of glyoxal.
653 _aглиоксиловая кислота
653 _aглиоксаль
653 _aоксалаты кальция
653 _aщавелевая кислота
655 4 _aстатьи в журналах
_9681159
700 1 _aPozdnyakov, Maksim A.
_999190
700 1 _aRasskazova, Lyudmila A.
_999186
700 1 _aFilimoshkin, Anatoliy G.
_999192
700 1 _aRubtsov, Konstantin V.
_999645
710 2 _aТомский государственный университет
_bХимический факультет
_bНаучные подразделения ХФ
_9109846
773 0 _tAdvanced Materials Research
_d2015
_gVol. 1085. P. 74-78
_x1022-6680
852 4 _aRU-ToGU
856 7 _uhttp://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000526248
908 _aстатья
999 _c388441