Application: 1. Preservative in food, feed, pharmaceutical, dye and etc. 2. Antiseptic, intermediate in pharmaceutical industry Comparison of sodium benzoate and Benzoic Acid: 1. Same effect with Benzoic acid, but sodium benzoate has bigger solubility in water, better stability in air and better inhibition of yeast and bacteria, so sodium benzoate is more popular 2. Benzoic acid and sodium benzoate both are applicated in high protein food, the preservative ability are the same, but the the dosage of sodium benzoate is 1.2 times of benzoic acid