Eastman has been producing effective food-grade antioxidants for more than 50 years.Many easy-to-use solution formulations are available containing antioxidants in various combinations and ratios dissolved in food grade solvents. Many also contain citric acid as an effective metal chelating agent. Eastman Tenox™ food grade antioxidants are offered as kosher products and are manufactured under rabbinical supervision in full accordance with Jewish dietary law.