Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tosoh Corp
Original Assignee
Toyo Soda Manufacturing Co Ltd
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Filing date
Publication date
Application filed by Toyo Soda Manufacturing Co LtdfiledCriticalToyo Soda Manufacturing Co Ltd
Priority to JP6363176ApriorityCriticalpatent/JPS52147597A/en
Publication of JPS52147597ApublicationCriticalpatent/JPS52147597A/en
Publication of JPS5516097B2publicationCriticalpatent/JPS5516097B2/ja
PURPOSE: To completely remove silica in wet process phosphoric acid by specifying the the atomic ratio of Si and F and the concn. of F in the acid and contacting the acid with silica gel so as to prevent precipitation of noncrystalline colloidal silica during purification of phosphoric acid by solvent extraction.
COPYRIGHT: (C)1977,JPO&Japio
JP6363176A1976-06-021976-06-02Purification of wet process phosphoric acid
GrantedJPS52147597A
(en)