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As a leading Mono Dicalcium Phosphate MCDP supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What raw materials are used to make Mono Dicalcium Phosphate MCDP?
This product is made of phosphoric acid, calcium carbonate and calcium hydroxide, which are reacted step by step. First, phosphoric acid and calcium carbonate are mixed in proportion and reacted to a pH value of about 3.5, and then calcium hydroxide is added to adjust the pH value to 5.0, stirring while adding to make the two fully dissolve. Continue stirring for two hours, transfer to a ceramic plate to evaporate until it is as thick as a paste, pour it into a wooden mold to cool, and then break it into blocks. After drying with hot air, Mono Dicalcium Phosphate MCDP is obtained. Its method is similar to that of soup. If the ratio is not appropriate, the properties will be biased. Only the accurate ones are excellent, and the powder is fine without coarse particles.
What is the appearance of Mono Dicalcium Phosphate MCDP?
It is mostly grayish white powder, heavy and dense, hard to pinch, and not easy to grind. It looks dull, and there are fine particles if you look closely. It is slightly soluble in water, and its aqueous solution is weakly acidic with a pH value of about 5.2, which can slowly release phosphorus and calcium. It has weak hygroscopicity and will not clump if placed in a dry place for more than a season. It is also difficult to deliquesce if stored in wetlands for a long time. It reacts slowly when it meets strong alkali, so it can be stored with weak alkali, but it needs to be kept away. It is stable at high temperature and decomposes into calcium phosphate when burned, so it does not need to be far from the fire source when stored. Its powder gradually dissolves after being soaked in water, leaving a small amount of residue, and its aqueous solution is weakly corrosive to iron.
Where can Mono Dicalcium Phosphate MCDP be applied?
In agriculture, it is a slow-release phosphorus fertilizer. When applied to alkaline soil, it can slowly release nutrients. The fertilizer effect can last for more than two months. It is suitable for fruit trees and forests; when applied to rice fields, it can make rice ears full and reduce empty shells. In the feed industry, it is an additive to supplement the phosphorus and calcium of livestock and poultry. It has a high absorption rate and is suitable for adult livestock and poultry. In industry, it can be used as a water treatment agent to adjust the hardness of water; in the ceramic industry, it can be used as a flux to lower the melting point of glaze. Its use is like an old official solving a case, calm and long-lasting, so it is important in scenes that require long-term effects.
What is the difference between Mono Dicalcium Phosphate MCDP and Monocalcium Phosphate?
Although both contain phosphorus and calcium, their solubility and fertilizer effect are different. Mono Dicalcium Phosphate MCDP is slightly soluble in water, and the fertilizer effect is slow and long-lasting; Monocalcium Phosphate is easily soluble, and the fertilizer effect is rapid and short-lived. In terms of use, the former is suitable for basal fertilizer and slow-release fertilizer, while the latter is more suitable for topdressing and foliar fertilizer. The production method is also different. The former is neutralized in two steps, while the latter is made in one step. Like old wine and new wine, both are fine wines, but the flavor and aftereffect are different. Users should choose the appropriate one to make the best use of it.
How to judge the quality of Mono Dicalcium Phosphate MCDP?
The powder of high-quality products is uniform, without coarse particles, and has a uniform color. It dissolves slowly after soaking in water, with little residue. Take a small amount and burn it. The pure product will decompose completely without black smoke or odor. If there is a burnt smell, it contains impurities. The pH value of its aqueous solution should be 5.0 to 5.5. Too acidic or too alkaline is not a good product. When mixed with an equal amount of lime, the high-quality product will react slowly. If it bubbles violently, the purity is insufficient. The packaging must be marked with "feed grade" or "fertilizer grade". Be careful if there is no mark or the handwriting is blurred, as it may be a low-quality product.