The "fertilizer grade ammonium polyphosphate" industry standard has been officially implemented on April 1, 2022, and the standard is reported by the phosphate and Compound Fertilizer sub-Technical Committee of the National Fertilizer and soil Conditioner Standardization Technical Committee, and the competent department is the Ministry of Industry and Information Technology; The main drafting units are: Shanghai Chemical Research Institute Co., LTD., Chengdu Yuntu Holding Co., LTD., Jinjingda Ecological Engineering Group Co., LTD., Stanley Agricultural Group Co., LTD., Wengfu (Group Co., LTD.), Sichuan University, Shifang Changfeng Chemical Co., LTD., etc.

Fertilizer grade ammonium polyphosphate basic information

Standard number: HG/T 5939-2021

Release Date: 2021-12-02

Implementation Date: 2022-04-01

China Standard classification number: G21

International Standard Classification Number: 65.080

Focal point: National Fertilizer and soil conditioner standardization Technical Committee phosphate fertilizer sub-technical committee

Competent Authority: Ministry of Industry and Information Technology

Ammonium polyphosphate has good water solubility, and its main functional characteristics are as follows:

1. Fertilizer grade ammonium polyphosphate has high nutrient content, good solubility and contains polymerized phosphorus, which is not easy to react with calcium, magnesium, iron and aluminum in the soil solution to make phosphate failure, so as to avoid phosphorus being fixed by the soil, increase the travel distance of phosphorus in the soil, nutrition deep roots, and greatly improve the utilization rate of phosphorus in season.

2. Fertilizer grade ammonium polyphosphate also has the function of chelating metal ions, which is not easy to be fixed by metal ions such as iron and calcium in the soil, but can form soluble complexes with ineffective trace elements in the soil and be absorbed and utilized by plants.

3. Fertilizer grade ammonium polyphosphate pH is neutral, does not harm the soil environment and crop roots, and has high safety for soil and crops.

4. Fertilizer grade ammonium polyphosphate is not directly absorbed by plants in the soil, but gradually hydrolyzed into orthophosphate and used by plants, so the fertilizer has the effect of slow release.

5. Fertilizer grade ammonium polyphosphate has large solubility and can be configured with liquid fertilizer with high phosphorus content; The crystallization temperature is low, and the production and use are convenient.