SU56270A1 - The method of purification dioxydiamino-arseno-benzene - Google Patents

The method of purification dioxydiamino-arseno-benzene

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Publication number
SU56270A1
SU56270A1 SU1711A SU56270DA SU56270A1 SU 56270 A1 SU56270 A1 SU 56270A1 SU 1711 A SU1711 A SU 1711A SU 56270D A SU56270D A SU 56270DA SU 56270 A1 SU56270 A1 SU 56270A1
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SU
USSR - Soviet Union
Prior art keywords
dioxydiamino
arseno
benzene
purification
base
Prior art date
Application number
SU1711A
Other languages
Russian (ru)
Inventor
А.И. Зильберберг
П.Ф. Рюмшин
Р.М. Хазанова
Original Assignee
А.И. Зильберберг
П.Ф. Рюмшин
Р.М. Хазанова
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Application filed by А.И. Зильберберг, П.Ф. Рюмшин, Р.М. Хазанова filed Critical А.И. Зильберберг
Application granted granted Critical
Publication of SU56270A1 publication Critical patent/SU56270A1/en

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Description

Основание сальварсана обычно очищают от нерастворимых в щелочи примесей путем растворени  его в щелочи, фильтровани  и выделени  его из фильтрата минеральной (например, со .п ной) или органической (например, уксусной) кислотой.The base of salvarsan is usually purified from alkali-insoluble impurities by dissolving it in alkali, filtering and separating it from mineral filtrate (for example, mineral acid) or organic (for example, acetic) acid.

Авторы насто щего изобретени  предлагают очищать диокси-диаминоарсенобензол от токсических примесей растворением его в щелочи, фильтровавшем и осаждением основани  из фильтра серной кислотой в виде труднорастворимого сульфата. Сульфат далее перевод т в основание обычным методом .The authors of the present invention propose to purify the dioxydiamino arsenobenzene from toxic impurities by dissolving it in alkali, filtered and precipitating the base from the filter with sulfuric acid in the form of insoluble sulfate. The sulfate is then transferred to the base by the usual method.

Пример. 5,7 кг влажного основани  (полученного восстановлением нитрооксифениларсиновой кислоты гидросульфитом ) размешивают с 6 .л воды и раствор ют с помощью 3,5 л 25/о-го едкого натра (полуторное количество против теории). Раствор нагревают до 50° и фильтруют. Объем фильтрата равен 3 л.Example. 5.7 kg of a wet base (obtained by reducing nitroxyphenylarsinic acid with hydrosulfite) is stirred with 6 l of water and dissolved with 3.5 l of 25 / o sodium hydroxide (one-and-a-half amount versus theory). The solution is heated to 50 ° and filtered. The volume of filtrate is 3 liters.

Перевод в сульфат производ т прибавлением к раствору 9,75 л серной кислоты. Полученный сульфат отфильтровывают , промывают водой. спиртом и эфиром и сушат в воздушной сущилке при температуре 25-30 Б течение 10-12 часов.The conversion to sulfate is carried out by adding to a solution 9.75 l of sulfuric acid. The resulting sulfate is filtered off, washed with water. alcohol and ether and dried in an air substance at a temperature of 25-30 B for 10-12 hours.

Перевод в основание производ т размешиванием полученного сульфата в 6,5 л насыщенного раствора соды. Полученкое основание про.мывают. водой . Вес промытого основани  - 5,16 кг.Transfer to the base is carried out by stirring the resulting sulfate in 6.5 liters of saturated soda solution. The obtained base is washed through. water The weight of the washed base is 5.16 kg.

Предмет изобретени .The subject matter of the invention.

Способ очистки диокси-диаминоарсенобензола от токсических примеceit путем растворени  его в щелочи, фильтровани  и осаждени  минеральной кислотой, отличающийс  тем, что, с целью получени  труднорастворимой в воде соли диокси-диамино-арсенобензола осаждение ведут серной кислотой .A method for purifying dioxydiamino arsenobenzene from toxic impurities by dissolving it in alkali, filtering and precipitating with mineral acid, characterized in that, in order to obtain the water-soluble salt of dioxydiamino arsenobenzene, precipitation is carried out with sulfuric acid.

SU1711A 1938-08-31 1938-08-31 The method of purification dioxydiamino-arseno-benzene SU56270A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU56270T 1938-08-31

Publications (1)

Publication Number Publication Date
SU56270A1 true SU56270A1 (en) 1938-11-30

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Country Status (1)

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SU (1) SU56270A1 (en)

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