On the synthesis and purification of betaine
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In the synthesis of betaine, using monochloroacetic acid, trimethylamine, and liquid alkali, a large amount of betaine is obtained in the final product, with a yield of over 90%; however, there is a high concentration of sodium chloride in the aqueous solution, which hinders purification. I hear there are methods such as alcohol washing or resin adsorption separation; could someone with experience give some advice?
Except for sodium chloride, after drying betaine, it is added to anhydrous ethanol and heated to form a solution; upon cooling, sodium chloride precipitates, and filtering yields pure betaine.
Except for sodium chloride, after drying betaine, it is added to anhydrous ethanol and heated to form a solution; upon cooling, sodium chloride precipitates, and filtering yields pure betaine.
Except for sodium chloride, after drying betaine, it is added to anhydrous ethanol and heated to form a solution; upon cooling, sodium chloride precipitates, and filtering yields pure betaine.
Except for sodium chloride, which can be electrolyzed using membranes with excellent results.