Recovery of calcium pantothenate

Details Recovery of calcium pantothenate Recovery of calcium pantothenate

1975-12-24

1977-04-26

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9912

Patent

active

040201031

ABSTRACT:
Calcium pantothenate is recovered from methanol solution by azeotroping the methanol with a suitable solvent. A methanol solution of calcium pantothenate is added at a regulated rate to a solvent such as octane heated above the methanol boiling point and methanol is removed by distillation as a methanol-solvent azeotrope leaving the calcium pantothenate in the form of a slurry in the azeotroping solvent. The distillation is carried out continuously but the solids may be removed continuously or collected in the still as a batch for subsequent removal.

REFERENCES:
patent: 2390499 (1945-12-01), Carlson et al.
patent: 2848489 (1958-08-01), Kagun
The Merck Index, 8th Ed. (1968), p. 240.
Elkins, "The Chemistry of Industrial Toxicology," 2nd ed. (1959), pp. 149, 150, 248, 249.

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