... ; PHOSPHATE LOW NO 2; PHOSPHATE SINGLE COMPONENT STANDARD; PHOSPHATE STANDARD SOLUTION; POTASSIUM ACID PHOSPHATE; POTASSIUM BIPHOSPHATE; POTASSIUM DIHYDROGEN ORTHOPHOSPHATE; POTASSIUM DIHYDROGEN ... water (83.5g/100 ml,90°C), for 2.7% aqueous solution, PH value appear in 4.2-4.7. insoluble in ...