pellets from white to black with various shades. Product is not toxic, fire-explosion-proof.
| Mass fraction of total phosphate (P2O5),% | 47+1 |
| Total nitrogen (N),% | 18+1 |
| Water content,% | 1,5+0,3 |
| Granulometric composition | |
| Mass fraction of granules: | |
| less than 1 mm,%, max | 3 |
| from 1 mm to 6 mm,%, not less | 97 |
| less than 6 mm,% | 100 |
| Static strength of granules MPa, no less | 3,0 |
| Friability,% | 100 |
In agriculture, complex long-acting fertilizers are used. They are introduced into the soil, after which they give up nutrients for several seasons. One of the striking examples is Diammonium phosphate fertilizer DAP. This substance contains the following useful components: Diammonium phosphate fertilizer
Nitrogen - not less than 18%.
Assimilable phosphates are at least 36%.
Thus, it is possible to obtain large yields for 5-7 years. The most effective on acidic soils, therefore, its use will be useful in wetlands, as well as in the cultivation of rice. Can be introduced into the soil with the help of tukskissevayuschih machines with a depth of sealing not less than 0.4 meters. In agrotechnical literature, this substance is often referred to as DAP. When stored, it does not cake and always has friability, which greatly facilitates its introduction into the soil. The material has no shelf life. It can change its color from white to yellow and dark gray.
In European countries, DAP is used with granules of black color. Local birds glue the granule of other colors and are therefore poisoned.
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| Ammonia water "analytical grade" (25-27%) |
| Paraffin technical grade |
| Nitric acid "c.p." (65 %) GOST 4461-77 with changes 1, 2 |
| Oleic acid technical TU 020-700-7-91, TU 9145-002-51043152-2005 |
| Orange Lead |
Fertilizer-grade diammonium phosphate is a granular phosphorus-nitrogen fertilizer with the formula (NH₄)₂HPO₄. In documents it may also be designated as DAP Fertilizer. When purchasing, it is important to check not only the name but also the specification, the mass fraction of total phosphates calculated as P₂O₅, total nitrogen, moisture content, particle size distribution, granule strength and free-flowing quality. These indicators affect batch stability, ease of storage, dosing and uniform application in production schemes.
Particle size and granule strength affect the uniformity of distribution of fertilizer-grade diammonium phosphate during mechanised application, storage and transshipment. If a batch contains too much fine fraction, dust or broken granules, the product may be harder to dose, produce more dust and distribute unevenly over the area.
Fertilizer-grade diammonium phosphate is stored under conditions protected from wetting, in undamaged factory packaging and with batch labelling preserved. Big bags are placed on a dry site or pallets, preventing contact with water, container damage and contamination with foreign materials. If moisture gets in, the granules can cake, flow worse and create difficulties when dosing. For a wholesale buyer it is important to preserve the quality certificate, batch traceability and check the actual condition of the product before transferring it into use.
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