Aluminium photosphate white rhombic crystal or powder. Relative density 2.566. Melting point>1500 C. Insoluble in water, soluble in concentrated hydro chlori acid, concentrated acid, alkali, and alcohol. At 580 C, the Chemicalbook is relatively stable, and at 1400 C, it does not melt and becomes a colloidal substance. Between room temperature and 1200 C, aluminum phosphate has four crystal forms, commonly known as Type.
