... Oxygen scavenger/absorber 3.Extend self life of products 4.Food grade 5.SGS, MSDS certificate Active ingredient: iron powderMain ... proper packaging and sealing. Applications:Food: cake, moon cake, battercake, pastry, etc.Pet food: cat food, dog food, fish food, etc.Animal products: beef ... health medicines. Others: tea, tobacco, documents, paintings, electronics, equipment. Natural Food Preservative