... Pure iron powder 2.Extend self life of products 3.Food grade 4.SGS, MSDS certificate 5.Deoxidant/ deoxidizer Active ... proper packaging and sealing. Applications:Food: cake, moon cake, battercake, pastry, etc.Pet food: cat food, dog food, fish food, etc.Animal products: beef jerky, pork ... various health medicines. Others: tea, tobacco, documents, paintings, electronics, equipment. Food Preservative