... is 99.5%,and it is white crystal or white powder.Widely used as acidulant, preservatives, antioxidants, mainly for alcohol ... for industrial unsaturanted resins,organic synthesis,pharmaceutical,oil,preservatives industry.Feed Grade Fumaric Acid,content of 99.5%,mainly for the ... production of feed acidifier,and feed composite acidifier,can replace antibiotics,reduce the PH ...