... difficult to solubilize in lower density vitriol.Specifications: FCC Name of indexFCCContent %98.0-100.5Loss on Drying ≤%2.0Heavy metals ... alkaline agent, nutrition supplement agent, the dough regulation agent, solidification agent, yeast foodstuff, resist of lumping agent, loosening agent, fermented agent, glue candy auxiliary agent, modifier, surface colouring agent of food ...