Amorphous iron(III) phosphate has been synthesised by homogeneous precipitation from equimolecular Fe(NH4)(2)(SO4)(2).6H(2)O and NH4H2PO4 aqueous, water-ethanol and water-iso-propanol solutions at pH = 2.0 and ambient temperature using hydrogen peroxide as precipitating agent. The precipitates have been characterised by TG/DTG/DTA techniques, chemical analysis, X-ray powder diffraction (XRD) analysis and scanning electron microscopy (SEM). The presence of ethanol and iso-propanol in the precipitation medium suppressed the co-precipitation of ferric sulphate as it does in aqueous medium. Thermal treatment of the as-precipitates at 750 degreesC in air yields a crystalline quartz-like structured FePO4 with markedly different morphological features. (C) 2003 Elsevier B.V. All rights reserved.