SU87088A1 - The method of producing tetracadiation arsenate pentahydrate (4CaO As2O5 5H2O) - Google Patents

The method of producing tetracadiation arsenate pentahydrate (4CaO As2O5 5H2O)

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Publication number
SU87088A1
SU87088A1 SU399537A SU399537A SU87088A1 SU 87088 A1 SU87088 A1 SU 87088A1 SU 399537 A SU399537 A SU 399537A SU 399537 A SU399537 A SU 399537A SU 87088 A1 SU87088 A1 SU 87088A1
Authority
SU
USSR - Soviet Union
Prior art keywords
arsenate
as2o5
4cao
pentahydrate
tetracadiation
Prior art date
Application number
SU399537A
Other languages
Russian (ru)
Inventor
П.Г. Кривенкова
С.М. Шогам
Original Assignee
П.Г. Кривенкова
С.М. Шогам
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 П.Г. Кривенкова, С.М. Шогам filed Critical П.Г. Кривенкова
Priority to SU399537A priority Critical patent/SU87088A1/en
Application granted granted Critical
Publication of SU87088A1 publication Critical patent/SU87088A1/en

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Description

Предметам изобр1етени   вл етс  способ получени  .пентагидрапа тетракальцийароената (4CaO-As2O5-5H2O), обла(дающего более высокими инсектисидными свойствами в сраинеиии с арсенатом кальци , получаемым в прамышленност1и известным способом.Objects of the invention are a method for the preparation of pentahydrapte tetracalcium carbonate (4CaO-As2O5-5H2O), which has higher insecticide properties in calcium and arsenate obtained in industry in a known manner.

Технологи  получени  арсаната кальци  сО|СТ01Ит в следующем.The technology of calcium arsanate SO | CT01It is as follows.

К раствору арсената натри , нагретого до 90°, приливают суспензию извести, Прогревают смесь при указа 11ной TSMnepaTiypte в течение часа и после отмьшми от раствора е(Д1кого натра, выделившегос  .в результате обменной реакции, фильтруют, сушат и т. д. или к суспензии извести шагретой до 90°, приливают раствор мышь ковой Кислоты, Прогревают смесь при этой температуре ,в течение часа, фильтруют, сушатA suspension of lime is poured into a solution of sodium arsenate heated to 90 °. The mixture is heated at the decree of the TSMnepaTiypte for one hour and after being removed from solution e (D1 of sodium separated from the exchange reaction, filtered, dried, etc., or to suspension of lime shaken up to 90 °; solution of mouse acid is poured; Heat the mixture at this temperature, for an hour, filter, dry

и IT. д.and IT. d.

Завадсиие образцы арсената кальци  представл ют собой твердые растворы гидроокиси кальци  в дигидрате трикальцийарсената с -мол рным соотношением CaO;As2O5, равным от 3,3 до 3,8.The samples of calcium arsenate samples are solid solutions of calcium hydroxide in tricalcium arsenate dihydrate with an-molar ratio of CaO; As2O5 of 3.3 to 3.8.

Описываемый способ обеспечивает получение другой ОСНОВ.БОИ качьциевой соли ортомышь ковой кислоты-пентагидрата тетракальцииарсената (4OaO-As205-5H20), имеющего, в частности, шедующие особенности :The described method provides for the preparation of another BASIC OF THE ORPHILE CAXIC SALT ACID Pentahydrate tetracalcium arsenate (4OaO-As205-5H20), which has, in particular, the following features:

П Водные суспеизии из 4CaO-As2O5.5Н20 имеют рН 9,6 в отличие от суспензий из твердых растворов гвдроокиси кальци  в дигидрате трика льций а рсенат1а, имеющих рН 8,3-8,6.P Aqueous suspensions from 4CaO-As2O5.5Н20 have a pH of 9.6, in contrast to suspensions from solid solutions of calcium hydroxide in tricoltium a xenate 1 dihydrate, having a pH of 8.3-8.6.

2) Растворимость 4CaO-As20r.-5H20 в буферных средах с рН 7,5- 10 памного выше растворимости заводских образцов .арсената кальци . Этим и объ сн етс  шовышенна  токсичность тетракальцийарсената по оравнен1ию с обыЧ|НЫ;М арсена том кальци .2) The solubility of 4CaO-As20r.-5H20 in buffer media with a pH of 7.5-10 is higher than the solubility of factory samples of calcium arsenate. This explains the suvyshennaya toxicity of tetracalcium arsenate, as compared with the usual | HY; calcium arsenate.

3) Мол рное соот-ношение CaO:As2O5 в пентагвдрате ,рав«о 4, в то врем  как дл  арсената кальци  оно составл ет 3,8-3,7.3) The molar ratio of CaO: As2O5 in pentavdrat is equal to about 4, while for calcium arsenate it is 3.8-3.7.

SU399537A 1949-06-24 1949-06-24 The method of producing tetracadiation arsenate pentahydrate (4CaO As2O5 5H2O) SU87088A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU399537A SU87088A1 (en) 1949-06-24 1949-06-24 The method of producing tetracadiation arsenate pentahydrate (4CaO As2O5 5H2O)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU399537A SU87088A1 (en) 1949-06-24 1949-06-24 The method of producing tetracadiation arsenate pentahydrate (4CaO As2O5 5H2O)

Publications (1)

Publication Number Publication Date
SU87088A1 true SU87088A1 (en) 1949-11-30

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SU399537A SU87088A1 (en) 1949-06-24 1949-06-24 The method of producing tetracadiation arsenate pentahydrate (4CaO As2O5 5H2O)

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SU (1) SU87088A1 (en)

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