Sodium lactate - Preparation

(1) Ethyl lactate (or sodium carbonate) was added to an equal amount of lactic acid solution, boiled, carbon dioxide Yat do, adjusting the pH to 7, plus active carbon, filtered, and the filtrate was concentrated to 25 ℃ lactate.
(2) lactic acid under cooling sodium hydroxide was added for neutralization, is set lower than 50 ℃ concentrated under vacuum to remove the water in about 80% of placing one week and then sodium hydroxide and then diluted to a concentration that finished.
?(3) under cooling in acid Sodium hydroxide was added for lactic acid powder,  the temperature is set lower than 50 ℃ concentrated under vacuum to remove water to 80% after about place one week and then sodium hydroxide and then diluted to certain concentration.