... 4.Food grade 5.SGS, MSDS certificate Active ingredient: iron powderMain components: iron powder, Activated carbon, perlite, salt, waterSpecifications: 1. ... packaging and sealing. Applications:Food: cake, moon cake, battercake, pastry, etc.Pet food: cat food, dog food, fish food, etc.Animal products: ... . Others: tea, tobacco, documents, paintings, electronics, equipment. Natural Food Preservative