1.Pure iron powder 2.Oxygen scavenger/absorber 3.Extend ... , MSDS certificate Active ingredient: iron powderMain components: iron powder, Activated carbon, perlite, salt, waterSpecifications: 1. Oxygen ... bacteria growth by eliminating Oxygen contains inside packaging, 2. This oxygen absorber can decrease the oxygen ... : tea, tobacco, documents, paintings, electronics, equipment. Natural Food Preservative