... : Diammonium phosphate 18-46-0, Diammonium phosphate DAP Fertilizer, Food grade diammonium phosphate, DAP ammonium phosphate.Product ... %--≤0.005Usage: Used as fire retardant, fire-proofing agent, fire-proof agent additive for wood, paper, fabric, used in manufacturing ... tube, also used in phosphorus, nitrogen high efficient compound fertilizer. Low arsenic grade is mainly used as nutrient.Packing ...