Dipotassium phosphate
<p><b >Dipotassium phosphate</b> (K<sub >2</sub>HPO<sub >4</sub>) - also phosphoric acid, dipotassium salt; dipotassium hydrogen orthophosphate; potassium phosphate, dibasic - is a highly water-soluble <a href="http://en.wikipedia.org/wiki/Salt" title="Salt" >salt</a> which is often used as a <a href="http://en.wikipedia.org/wiki/Fertilizer" title="Fertilizer" >fertilizer</a>,<a href="http://en.wikipedia.org/wiki/Food_additive" title="Food additive" >food additive</a> and <a href="http://en.wikipedia.org/wiki/Buffering_agent" title="Buffering agent" >buffering agent</a>. It is a common source of phosphorus and potassium.</p>