Preparation method for 60-65% sodium lactate solution

The present invention provides a method for preparing a concentration of 60 to 65 mass% sodium lactate solution, comprising the steps of: 1) The sodium hydroxide solution was added dropwise lactic acid; 2) when the solution pH of 5.0-6.0 when the stop is from 8.0 to 9.0 or dropwise; 3) precise titration reaction mixture; 4) was added sodium hydroxide or lactic acid, the reaction mixture was a pH of 6.90-7.10. The method of the present invention had a sodium lactate solution pH stable, easy to store, can be used to produce sodium lactate injection, and lactated Ringer's Injection, can also be used in the field of food additives; the concentration of sodium lactate solution in accordance with the present method is prepared in 60% -65 % yield. This method is simple and suitable for industrial production, quality control is easy, efficient and stable.