Process for the purification of citric acid

Details Process for the purification of citric acid Process for the purification of citric acid

1977-06-17

1978-09-12

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562580, C07C 5916, C07C10120

Patent

active

041137710

ABSTRACT:
It is disclosed that citric acid and salts thereof are readily produced by reacting acetone dicarboxyl ions, cyanide ions and alkali metal ions to produce an intermediate system which is subsequently reacted in an excess caustic system to form a salt of citric acid and that the salt is readily recovered by precipitation from the excess caustic system under proper conditions of concentration and temperature without requiring the formation of calcium salts. The recovered salt may be used directly or may be subjected to additional purification or may be converted to citric acid or other salts thereof by treatment with an acidification system such as sulfuric acid.

REFERENCES:
patent: 3769337 (1973-10-01), Wiegand
patent: 3769338 (1973-10-01), Daganl et al.
patent: 3917685 (1975-11-01), Bergeron

Affiliated with

Also associated with

Rating

Process for the purification of citric acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the purification of citric acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the purification of citric acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2384120