The chemical formula for silver phosphate is Ag3PO4. The formula shows that a molecule of silver phosphate contains three atoms of silver, one atom of phosphorous and four atoms of oxygen.
Silver phosphate generally appears as a yellowish solid. It has a molar mass of 418.58 grams per mole and a density of 6.37 grams per cubic centimeter. The early days of photography used silver phosphate because of its sensitivity to light.
Silver phosphate is also known by the names trisilver phosphate, phosphoric acid, argentous phosphate, silver salt and silver orthophosphate. Soluble in both water and acid, silver phosphate is still used by analytical chemists.