The general fertilizer effect is about 120 days. Fertilizer will be most effective about 50 days after application under suitable conditions such as moisture and temperature.
Diammonium phosphate appears as off-white or dark gray particles with a specific gravity of 1.619. It is easily soluble in water and insoluble in ethanol. It has certain hygroscopicity and is easy to decompose in humid air, volatilizing ammonia and turning into ammonium dihydrogen phosphate. The aqueous solution is slightly alkaline, pH 8.0.
Product specifications are: 64 (N18: P2O546), 61 (N16: P2O545), 57 (N15: P2O542). In order to increase storage stability, some products add coating agents during the production process to make the product appear brown or yellow. Extended information
Uses
Diammonium phosphate is a high-concentration quick-acting fertilizer, suitable for various crops and soils, especially for crops that love nitrogen and require phosphorus. It can be used as base fertilizer or Top dressing can be applied but should be applied deeply.
Physical properties of the product: This product is easily soluble in water and has less solid content after dissolution. It is suitable for the needs of various crops for nitrogen and phosphorus. It is especially suitable for use as base fertilizer, seed fertilizer, Top dressing
Application: high performance nitrogen and phosphorus binary fertilizer, common specifications: physically neutral fertilizer, applicable to any soil and most crops, especially suitable for crops that like ammonium and need phosphorus, used as base fertilizer or top dressing Both are acceptable, but should be applied deeply. Used as a curing agent for urea-formaldehyde resin adhesive, it is formulated into a 20% aqueous solution with the slowest curing speed. Also used as additive flame retardant. If a small amount of DAP is added to the natural rubber emulsion, the magnesium ions in the latex can be effectively eliminated without reducing the tensile strength of the natural rubber latex after vulcanization.
Baidu Encyclopedia-Diammonium Phosphate