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Total water-soluble fertilizer ammonium dihydrogen phosphate (MAP) 12-61-00

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Total water-soluble fertilizer ammonium dihydrogen phosphate (MAP) 12-61-00

Chemical Name: Ammonium Dihydrogen Phosphate

Alias: Monoammonium Phosphate

Chemical formula: NH4H2PO4

CAS NO.: 7722-76-1

Executive standard: HG-T 4133-2010


White granular crystal, relative density 1.803, melting point 190℃, easily soluble in water, slightly soluble in alcohol, insoluble in ketone, PH value of 1% aqueous solution is 4.5.


Monoammonium phosphate is a high-concentration quick-acting fertilizer that is suitable for various crops and soils, especially for crops that require ammonium and phosphorus. This product is 100% soluble in water, suitable for the needs of various crops for nitrogen and phosphorus elements. It is especially suitable for the use of base fertilizer and top dressing in arid areas with little rainfall.

It can be used as chlorine-free N, P binary compound fertilizer, its total nutrients are 73%, it is a high-quality basic raw material for preparing N, P, K ternary compound fertilizer, suitable for pollution-free agricultural products fertilizer;


The conventional packaging is 25KG bag, double-layer plastic inner bag, and the outer bag is a plastic woven bag.

Packaging and shipping marks can be customized.


1. Fast water solubility: suitable for various irrigation and fertilization systems;

2. Green and safe: no sodium, chloride ions, and very low residues of other heavy metal ions;

3. Quick-acting nutrition: It contains ammonium nitrogen and phosphate phosphorus, which are easily absorbed by crops quickly;

4. High phosphorus nutrients: it can meet the needs of various crops for phosphorus throughout the growth cycle;

5. Weak alkaline fertilizer: PH4.2-4.8.

Administration Compatibility

Ammonium dihydrogen phosphate is usually mixed with other water-soluble nitrogen fertilizers (urea, calcium nitrate) and potassium fertilizers (potassium nitrate) to form NPK fertilizers to provide balanced nutrition for crops; it can be mixed with neutral acidic pesticides, but not strongly alkaline pesticides. Do not mix with fertilizers containing calcium or magnesium to avoid precipitation; due to the complexity of crop nutrient deficiency and fertility tolerance, as well as the different soil structures and fertility in different places, the specific usage should follow the advice of local agricultural technicians.

Fertilization matters

Ammonium dihydrogen phosphate has a low nitrogen-to-phosphorus ratio, so it is suitable for all crops and their seedling growth stages to promote rooting and strong seedlings. It can also be mixed with various water-soluble fertilizers such as urea, potassium nitrate, potassium sulfate, etc., so as to meet the nutritional needs of more plants in each growth period.

The solution is weakly acidic, which is convenient for flushing, spraying and drip irrigation.

  It is most suitable to apply ammonium dihydrogen phosphate as a fertilizer during crop growth. It is better than ordinary calcium and ammonium sulfate in acidic soil, and is also superior to other fertilizers in alkaline soil; do not mix with alkaline fertilizers to avoid lowering the Fertilizer effect. For example, when lime is used in the acidic soil in the south, ammonium dihydrogen phosphate should be applied after a few days.

Because the product has high phosphorus content and can be quickly absorbed as water-soluble phosphorus, it can enhance the root development of seedlings and has a quick effect on the initial growth of crops;

Since phosphorus can improve the vigor of plant flower bud differentiation, increase fruit firmness and shelf life, this product can also be used in the pre-flowering and fruit-forming stages of crops;

Other growth stages: It can be mixed with various water-soluble fertilizers such as urea, potassium nitrate, potassium sulfate, etc., so as to meet the nutritional needs of more plants in various growth stages.

It is recommended to use an appropriate amount of product for spraying with water or as drip irrigation fertilizer.

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