ES293817A3 - A manufacturing procedure of heavy metal salts from dimethylamine-ditio-phoromic acid (Machine-translation by Google Translate, not legally binding)
- Google Patents
A manufacturing procedure of heavy metal salts from dimethylamine-ditio-phoromic acid (Machine-translation by Google Translate, not legally binding)
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DERIVADOS DEL AZUFRE SOC ANENI
QUIMICOS DE MALGRAT SOC ANENIM
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DERIVADOS DEL AZUFRE SOC ANENI
QUIMICOS DE MALGRAT SOC ANENIM
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Priority to ES0293817ApriorityCriticalpatent/ES293817A3/en
Publication of ES293817A3publicationCriticalpatent/ES293817A3/en
Solid-Sorbent Or Filter-Aiding Compositions
(AREA)
Abstract
"A PROCEDURE FOR THE MANUFACTURE OF HEAVY METAL SALTS FROM DIMETHYLAMINE-DITIO-PHOROMIC ACID". which is characterized by comprising the phases of treatment of dimethylamine with carbon sulphide in slight excess and alkaline hydroxide with obtaining the corresponding alkaline salt at a temperature lower than 30º C and up to a final pH close to 9; treating this salt in solution with the stoichiometric amount of the desired heavy metal salt, keeping the temperature below 30º C, and adjusting the end point of the precipitation by testing on a sample of the presence of excess anion and of the cation, with formation of the corresponding insoluble salt of dimethylamino-dithioformic acid; filtration, washing, drying, crushing and formulation, in the case of the solid product formed. (Machine-translation by Google Translate, not legally binding)
ES0293817A1963-11-231963-11-23A manufacturing procedure of heavy metal salts from dimethylamine-ditio-phoromic acid (Machine-translation by Google Translate, not legally binding)
ExpiredES293817A3
(en)
Procedure for the preparation of metal salts of acids that have dissociation constants greater than 1e (-6) (Machine-translation by Google Translate, not legally binding)
A procedure for the manufacture of aqueous solutions of alkaline salts and ammonium of the N-methyl-amino-methane tionatiolic acid (Machine-translation by Google Translate, not legally binding)
A procedure for the manufacture of alpha-type compounds, alfa prima-ditio-bis (dialquiltio) -formamida (Machine-translation by Google Translate, not legally binding)