Molar mass 165.901 g/mol Appearance white crystals | Density 3.25 g/cm³ | |
Aluminium arsenate is a inorganic compound with the formula AlAsO4. It is most commonly found as an octahydrate. It is a colourless solid that is produced by the reaction between sodium arsenate and a soluble aluminium salt. Aluminium arsenate occurs naturally as the mineral mansfieldite. A synthetic hydrate of aluminium arsenate is produced by hydrothermal method. with the formulation, Al2O3.3As2O5.10H2O.
Modification of aluminium orthoarsenate was carried out by heating different samples to different temperatures.Both amorphous and crystalline forms were obtained. The solubility product was determined to be 10−18.06. for Aluminium arsenate of formula AlAsO4.3.5H2O Like gallium arsenate and boron arsenate, it adopts the α-quartz-type structure. The high pressure form has a rutile-type structure in which aluminium and arsenic are six-coordinate.