Научно-Производственное Объединение "Монокристаллреактив"
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Application filed by Науково-Виробниче Об'Єднання "Монокристалреактив", Научно-Производственное Объединение "Монокристаллреактив"filedCriticalНауково-Виробниче Об'Єднання "Монокристалреактив"
Priority to UA4836625ApriorityCriticalpatent/UA5676A1/en
Publication of UA5676A1publicationCriticalpatent/UA5676A1/en
A process comprises the treatment of orthophosphoric acid by hydroxide of alkali metal or ammonium with a formation of a saturated solution, crystallization of product from the saturated solution, separation of product from a mother solution, and drying. The crystallization is carried out from the saturated at 80-85 °C solution at pH 5.8-6.0.
UA4836625A1990-06-111990-06-11Process for the preparation of monosubstituted phosphates of alkali metals or ammonium
UA5676A1
(en)
Process for the recovery of 2-hydroxynaphthaline-3-carboxylic acid from the reaction products of the alkali metal salts obtained from 2-hydroxynaphthaline with carbon dioxide