Method for separating and purifying niacin

Application Number: 00109066
Application Date: 2000.06.05
Publication Number: 1326919
Publication Date: 2001.12.19
Priority Information:
International: C07C51/44;C07C51/573;C07C55/02
Applicant(s) Name: Zhang Tiande
Inventor(s) Name: Zhang Tiande;Guo Ying;Zhang Yi
Patent Agency Code: 00000
Patent Agent:
Abstract By using the nylon acid waste liquid produced during the nitric acid oxidation of cyclodexanol and cyclohexanone as main material and water as solvent, and through the repeated crystallization and separation, 1,2-ethanedicarboxylic anhydride and 1,3-propyldicarboxylic acid are extracted. The process has short process, low material consumption, low power consumption and low cost and the present invention can solve the environmental pollution caused by waste.