SU119524A1 - Method for quantitative determination of 2,4-dinitroethylbenzene in mononitroethylbenzene - Google Patents

Method for quantitative determination of 2,4-dinitroethylbenzene in mononitroethylbenzene

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Publication number
SU119524A1
SU119524A1 SU600815A SU600815A SU119524A1 SU 119524 A1 SU119524 A1 SU 119524A1 SU 600815 A SU600815 A SU 600815A SU 600815 A SU600815 A SU 600815A SU 119524 A1 SU119524 A1 SU 119524A1
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SU
USSR - Soviet Union
Prior art keywords
dinitroethylbenzene
mononitroethylbenzene
quantitative determination
solution
color
Prior art date
Application number
SU600815A
Other languages
Russian (ru)
Inventor
Л.Л. Беспалова
О.С. Владырчик
П.М. Кочергин
Original Assignee
Л.Л. Беспалова
О.С. Владырчик
П.М. Кочергин
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Л.Л. Беспалова, О.С. Владырчик, П.М. Кочергин filed Critical Л.Л. Беспалова
Priority to SU600815A priority Critical patent/SU119524A1/en
Application granted granted Critical
Publication of SU119524A1 publication Critical patent/SU119524A1/en

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Description

Изобретением  вл етс  способ количественного определени  2,4-динитроэтилбензола в мононитроэтилбензоле, основанный на цветной реакции 2,4-динитроэтилбензола с водноацетоновы раствором едкого натра.The invention is a method for the quantitative determination of 2,4-dinitroethylbenzene in mononitroethylbenzene, based on the color reaction of 2,4-dinitroethylbenzene with an aqueous acetone solution of sodium hydroxide.

При прибавлении к нитроэтилбензолу ацетона и водного раствора едкого натра в определенных соотношени х образуетс  слаба  зеленовато-желта  окраска раствора. В отсутствии динитроэтилбепзола она остаетс  посто нной. В присутствии дипитроэтнлбензола зеленоватол елта  окраска раствора нереходит в синюю, интенсивность окраскн усиливаетс  по мере увеличени  содержани  динитроэтилбензола в смеси.When acetone and an aqueous solution of sodium hydroxide are added to nitroethylbenzene, a weak greenish-yellow color of the solution is formed in certain ratios. In the absence of dinitroethylbazole, it remains constant. In the presence of dipitroethylbenzene, greenish gelatin, the color of the solution does not return to blue, the intensity of the color increases as the content of dinitroethylbenzene in the mixture increases.

При мер. Из бюретки с .делени ми в 0,01 -ил сливают в пробирку ,0,2 мл промытого водой технического нейтрального нитроэтилбензола, прибавл ют 5 мл ацетона и 10 канель 2 н. водного раствора едкого натра . Пробирку закрывают пробкой и встр хивают. Во всех случа х по вл етс  слаба  зеленовато-желта  окраска раствора. При отсутствии динитроэтилбензола эта окраска не долнсна проходить в синюю или фиолетовую . При наличии динитроэтилбензола в нитроэтилбензоле зеленовато-желта  окраска раствора через 5 мин. после встр хивани  пробирки переходит в синюю, причем интенсивность окраски углубл етс  до фиолетовой по мере увеличени  содержани  дннитроэтилбензола в смеси. При наличии окраски раствора сравнивают интенсивность ее с интенсивностью окрасок эталонных смесей, приготовленных в услови х, совершенно , аналогичных описанным, но вместо 0,2 мл испытываемого нитроэтилбензола нримен ют по 0,2 мл искусственных смесей, содержащих, например, 0,05; ОДО;-0,25; 0,50.1,0 и 2,0 вес. процентов химически чистого 2,4-динитроэтилбензола в химически чистом мононитроэтилбензоле (узкой фракции 0-, , М;- и п-нитрозтилбензолов).For example. From a burette with a 0.01-yl separation, it was poured into a test tube, 0.2 ml of a technical neutral nitroethylbenzene washed with water, 5 ml of acetone were added, and 10 n 2 channels. aqueous solution of caustic soda. Cap the tube and shake. In all cases, a weak greenish yellow color of the solution appears. In the absence of dinitroethylbenzene, this coloration does not take place in blue or violet. In the presence of dinitroethylbenzene in nitroethylbenzene, a greenish-yellow color of the solution after 5 min. after shaking, the tube turns blue, and the color intensity deepens to violet as the content of dinitroethylbenzene in the mixture increases. If there is a solution color, compare its intensity with the intensity of the colors of the reference mixtures prepared under conditions perfectly similar to those described, but instead of 0.2 ml of the tested nitroethylbenzene, 0.2 ml of artificial mixtures containing, for example, 0.05; ODL; -0.25; 0.50.1.0 and 2.0 wt. percent of chemically pure 2,4-dinitroethylbenzene in chemically pure mononitroethylbenzene (a narrow fraction of 0-, M; - and p-nitro-methylbenzenes).

Предмет изОбретени Item of Contents

Способ количественного определени  2,4-динитрозтилбензола в мононитроэтилбензоле путем колориметрического сравнени  интенсивности, окрасок, отличающийс  тем, что, с целью быстрого определени  процентного содержани  динитроэтилбензола, определение провод т путем сравнени  интенсивности окраски смеси испытуемого нитроэтилбензола с водно-ацетоновым раствором едкого натра с интенсивностью окрасок эталонных смесей с известным содержанием 2,4-динитроэтилбензо,ла в мононитроэтилбензоле.The method of quantitative determination of 2,4-dinitrosylbenzene in mononitroethylbenzene by colorimetric intensity comparison, colors, characterized in that, in order to quickly determine the percentage of dinitroethylbenzene, the determination is carried out by comparing the color intensity of the mixture of the tested nitroethylbenzene with water-acetone solution of sodium glucose solution. reference mixtures with a known content of 2,4-dinitroethylbenzo, la in mononitroethylbenzene.

SU600815A 1958-05-31 1958-05-31 Method for quantitative determination of 2,4-dinitroethylbenzene in mononitroethylbenzene SU119524A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU600815A SU119524A1 (en) 1958-05-31 1958-05-31 Method for quantitative determination of 2,4-dinitroethylbenzene in mononitroethylbenzene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU600815A SU119524A1 (en) 1958-05-31 1958-05-31 Method for quantitative determination of 2,4-dinitroethylbenzene in mononitroethylbenzene

Publications (1)

Publication Number Publication Date
SU119524A1 true SU119524A1 (en) 1958-11-30

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Country Link
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