Using a popular lyrics, "Fog in the fog, looking at the moon in the water" to describe the current "diammonium" sales in the agricultural market is very appropriate, because the market is known as "diammonium" fertilizer products, such as "polypeptide phosphate II Ammonium "Urea formaldehyde diammonium", "diammonium nitrophosphate", "triammonium phosphate", "organic, inorganic diammonium", etc., are dazzling, true and false.
Howl is called "polypeptide diammonium phosphate" "urea formaldehyde diammonium"? Through Baidu search, no relevant information was found. “Triammonium phosphate†is a chemical raw material rather than a chemical fertilizer, but some companies have added some potassium fertilizer or some potassium-containing raw materials on the basis of diammonium phosphate, and the diammonium phosphate has turned into “triammonium phosphateâ€.
What's more, some companies produce "organic and inorganic diammonium" products, which are labeled with N-P-K content of 64%, organic matter content of 30%, humic acid content of 40%, and trace element content of 20 in fertilizer bags. %, etc., propagating its fertilizer effect is far better than ordinary diammonium. However, in fact, this fertilizer is purely Zhang Guan Li Dai, just a mixture of organic fertilizer and diammonium.
In the name of the dealer, the author consulted a representative of a certain company that sold the product to see if the content reached the standard. The representative of the company said that a bag of “diammonium†is 50 kg, of which 25 kg is 64% diammonium, 25 kg. It is organic fertilizer.
If the particles are separated during the test, the monoammonium content is acceptable for the single purification test. If mixed, the test is not qualified. Then ask the country whether there is such a standard for fertilizers. The representative of the company said that this is an enterprise standard, and the standard set by the company is qualified. Therefore, when farmers purchase "diammonium", they must purchase the products of the formal enterprise, and do not let the phenomenon of "people mistakenly misunderstood for a year".
In fact, there is a “Shangfang Sword†in the hands of the peasants that can be used for self-protection, that is, where the national standard is not implemented, that is, the “national standard†is the problem product. For diammonium phosphate, the label should include the name of the fertilizer, the trademark, the specification grade, the net content, the nutrient content, the manufacturer's address, the telephone number and the batch number, and the implementation standards.
The author saw in the market that the product packaging label is “organic diammonium phosphateâ€, the implementation standard is Q/CGYZ004-2006, which belongs to the enterprise standard, and the phosphorus content is only 12%, which is far lower than the national mandatory standard for diammonium phosphate ( GB10205-2009, the lowest content of qualified products containing phosphorus is 39%), and the name does not meet the requirements of national standards, and the label "American technology" is misleading, which belongs to the fake "diammonium phosphate".
Tips can also help identify counterfeit diammonium phosphate. At present, the particulate superphosphate is used in the market to counterfeit diammonium phosphate, and the granular superphosphate is also used as a nitrophosphate or heavy calcium. The color, particle shape and compressive strength of these fertilizers are similar, but they are composed of components. The difference in species, nutrient content, and price is very large and can be identified by the following methods:
Look at the appearance. In the case of non-moisture, the diammonium phosphate is dark brown in color, slightly yellow in edge, slightly translucent in the outer edge of the particle, slightly smooth in surface, and irregular in particles. After damp, the color of the particles is dark brown and dark, no yellow and The edge is transparent. After wet water, the diammonium phosphate particles behave like moisture, and a very small amount of white color appears on the surface;
The nitrophosphate fertilizer has obvious transparency, the surface of the granule is smooth, and it is dark brown irregular granules; the heavy superphosphate granule fertilizer is dark gray granules, and the superphosphate granules are light in color, gray, light gray, and the surface smoothness is poor. Disolved in water.
Phosphate fertilizer, diammonium phosphate and heavy superphosphate are all soluble in water, and the particulate superphosphate is not completely soluble in water. Three use fire to burn. Diammonium phosphate, nitric acid, and phosphate fertilizers burn quickly on red charcoal and release ammonia gas. Heavy calcium phosphate and calcium phosphate have no ammonia smell, especially superphosphate. The shape of the particles does not change at all. Fourth, quantitative analysis can be done through the laboratory.
This article URL: Beware of the concept of speculation of phosphate fertilizer diammonium true and false identification skills
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