Preparation method: Mix 228.3 kg of glutamic acid salt with 92.2 kg of chloroacetic acid, then add 292.8 kg of sodium hydroxide solution with a molar concentration of 30%, introduce cooling water, and stir to maintain the system temperature at 50°C. Slowly add 130.2 kg of sodium hydroxide solution with a molar concentration of 30% for reaction, maintaining the reaction temperature at 80°C for 3 hours to obtain the intermediate product. Synthesis of Tetrasodium Glutamate Diacetate: Add 166.0 kg of chloroacetic acid to the intermediate product, and slowly add 468.5 kg of sodium hydroxide solution with a molar concentration of 30% for reaction, maintaining the reaction temperature at 80°C for 5 hours. After the reaction ends, filter to obtain the filtrate of Tetrasodium Glutamate Diacetate.

Substances

Description of necessary first-aid measures