Separation of phosphoric acid from aqueous solutions of thiamine

Details Separation of phosphoric acid from aqueous solutions of thiamine Separation of phosphoric acid from aqueous solutions of thiamine

1990-02-09

1991-09-10

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, 544327, C01B 2516, C07D23902, C07D41500

Patent

active

050472232

ABSTRACT:
Phosphoric acid is separated from aqueous solutions of thiamine phosphates which are obtained in the phosphorylation of thiamine, with or without subsequent partial hydrolysis, by a process in which the phosphoric acid is converted with a virtually water-insoluble or only slightly water-soluble tertiary amine into the corresponding salt and the latter is extracted with a virtually water-immiscible or only slightly water-miscible solvent of moderate polarity. In a particularly advantageous procedure, the phosphoric acid is extracted with a mixture of a virtually water-insoluble or only slightly water-soluble tertiary amine and a virtually water-immiscible or only slightly water-miscible solvent of moderate polarity.

REFERENCES:
patent: 3361527 (1968-01-01), Hinkebein et al.
patent: 3367749 (1968-02-01), Koerner et al.
Verlag Chemie, Weinheim, New York, 1979, pp. 242-245, C. Reichardt, "Solvent Effects in Organic Chemistry".

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