Features: 1) Appearance: white powder, fine powder 2) Properties: odorless, non-toxic, not insolub Features:1) Appearance: white powder, fine powder2) Properties: odorless, non-toxic, not insoluble in water, difficult soluble inconcentrated acid and alkaline3) Application: widely used in productions of monocrystal, photo-luminescent pigment, fluorescent powder, high pressure lamp tube, high ...