White or colorless crystals. It is soluble in water easily. The density is 2.338, and melting point is 252.6°C. It is used as highly effective composite fertilizer‚ The total nutrition content can reach to 86%. And also as a basic raw material for N, P and K compound fertilizer. It is used as germ cultivator, nourishing supplement for feed, expanding agent for food industry, also as nourishing, buffering and complexing agents. It is used to manufacture metaphosphate in medical.