Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-12-06
1976-09-28
Killos, Paul J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260537N, C07C 5912
Patent
active
039831701
ABSTRACT:
A process for the purification of D,L-malic acid. An aqueous solution of D,-L-malic acid containing maleic acid and fumaric acid as impurities is treated with a strongly basic anion-exchange resin to remove the maleic acid and fumaric acid to provide substantially pure D,L-malic acid.
REFERENCES:
patent: 3371112 (1968-02-01), Winstron
Kageyama Yuriaki
Maida Rikichi
Sumikawa Shozo
International Organics, Inc.
Killos Paul J.
Kyowa Hakko Kogyo Co. Ltd.
Robbins Glenn K.
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