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Application filed by Павло Анатолійович КозубfiledCriticalПавло Анатолійович Козуб
Priority to UAU201412145UpriorityCriticalpatent/UA97979U/en
Publication of UA97979UpublicationCriticalpatent/UA97979U/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A method for purifying a mixture of lower dicarboxylic acids by dissolving or recrystallization in ketones. A mixture of low dicarboxylic acid prior to dissolution in ketones is reacted with elemental sulfur in the temperature range of 140-210 °C at a ratio of sulfur:copper 0.8-2.3 for 10-15 minutes.
UAU201412145U2014-11-102014-11-10A method for purifying a mixture of lower dicarboxylic acids
UA97979U
(en)
Process for the treatment of phosphate-containing ashes from waste incineration plants by wet-chemical digestion to obtain aluminum, calcium, phosphorus and nitrogen compounds
Method for purifying raw phosphoric acid (e.g. mga acid) by adding ashes originating from waste incineration plants, comprising the production of pure phosphoric acid, calcium sulfate, water-soluble calcium hydrogen phosphates and metal salt solution