... at 2.338, melting point at 252.6 , and PH value of 1% solution is 4.5 Application: ... medical or food industry. Used as a high effective K and P compound fertilizer. It contains totally 86% fertilizer ... used as a basic raw material for N, P and K compound fertilizer. Packing: 25kgs net paper bags or ... the open air, kept away from water, moisture and sunlight during transport, handled with care, so as ...