The toxicity of potassium Sls was studied and its safety was evaluated. Methods the toxicity level and genotoxicity of Sls acid potassium were evaluated according to the method of gb15193.1-21 of toxicological evaluation of food safety. Results Sls acid and potassium on mice with acute toxicity experiment ld50=1, belong to low toxicity level;
Through micronucleus test of marrow cells, the sperm deformity test and the traditional teratogenic test showed that Sls acid potassium had no genotoxicity, and the 30d feeding test had no obvious toxicity effect on animal body weight, blood routine and serum alt, BUN, GLU, TC and TG ($number). Conclusion Sls acid potassium is a safe, Relatively non-toxic food additives can be used in all kinds of food and beverages.