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Kalium Dihydrogen Phosphate: What Is It? How Does it Work?

Views: 1     Author: Site Editor     Publish Time: 2022-11-07      Origin: Site

Potassium dihydrogen phosphate (chemical formula: KH2PO4) is sealed and stored, stable in the air, loses water at 400 ° C and becomes metaphosphate, used to prepare buffer solution, determine arsenic, antimony, phosphorus, aluminum and iron, prepare phosphorus standard solution. Prepare the culture medium, and measure the activity of inorganic phosphorus and alkaline phosphatase in serum. Main purpose: to prepare buffer solution. Determination of arsenic, antimony, phosphorus, aluminum and iron. Prepare phosphorus standard solution. 


The activity of inorganic phosphorus and alkaline phosphatase in serum was measured. Potassium dihydrogen phosphate (chemical formula: KH2PO4) is sealed and stored, stable in the air, loses water at 400 ° C and becomes metaphosphate, used to prepare buffer solution, determine arsenic, antimony, phosphorus, aluminum and iron, prepare phosphorus standard solution , Prepare the culture medium, and measure the activity of inorganic phosphorus and alkaline phosphatase in serum. Main purpose: to prepare buffer solution. Determination of arsenic, antimony, phosphorus, aluminum and iron. Prepare phosphorus standard solution. Formulated. Substance. The activity of inorganic phosphorus and alkaline phosphatase in serum was measured.


Potassium dihydrogen phosphate powder basic information

Chinese name: 磷酸二氢钾

English name: PotassiumPhosphateMonobasic

Chemical formula: KH2PO4

Molecular weight: 136.09

CAS Number: 7778-77-0

EINECS Number: 231-913-4

Melting point: 252.6℃

Water solubility: 83.5g/100ml water, insoluble in ethanol

Density: 2.338 g/L

Appearance: colorless crystal or white granular powder

Flash point: non-flammable

Application: Preparation of buffer solution, determination of arsenic, antimony, phosphorus, aluminum and iron, preparation of phosphorus standard solution, preparation of culture medium

Safety description: S24/25A

Hazard description: R36/38

Storage: keep sealed


Potassium dihydrogen phosphate specific application

Basic applications

Preparation of buffer solution, determination of arsenic, antimony, phosphorus, aluminum and iron, preparation of phosphorus standard solution, preparation of various media for haploid breeding, determination of inorganic phosphorus and alkaline acidase activity in serum, preparation of bacterial serum for testing Leptospira culture medium, etc.


Industrial applications

In industry, it is used as a buffer and a culture agent; it is also used as a flavoring agent for the synthesis of bacterial culture agent, a raw material for potassium metaphosphate, a culture agent for brewing yeast, a strengthening agent, a leavening agent, and a fermentation aid.


Agricultural applications

It is used as high-efficiency phosphorus-potassium compound fertilizer in agriculture; potassium dihydrogen phosphate products are widely used in almost all types of crops such as various types of cash crops, grains, fruits, vegetables, etc. The organization has carried out a lot of relevant application experiments on the application of potassium dihydrogen phosphate to various typical crops. The actual application effects of various types of crops in various places have proved that potassium dihydrogen phosphate can significantly increase production and income, improve quantity and optimize quality, lodging resistance, and resistance to diseases and insect pests. 


It has many excellent effects such as prevention and control of premature aging, and has the effect of overcoming nutrient deficiencies caused by the decline of root aging and absorption capacity in the later stage of crop growth. Potassium dihydrogen phosphate is a new type of high-concentration phosphorus-potassium two-element compound fertilizer, which contains about 52% of phosphorus pentoxide and about 34% of dipotassium oxide. Flue-cured tobacco requires a large amount of phosphorus and potassium, especially potassium. Potassium dihydrogen phosphate is an ideal new fertilizer for flue-cured tobacco. In order to explore the use value and application method of potassium dihydrogen phosphate in flue-cured tobacco to improve the quality of tobacco leaves. Potassium dihydrogen phosphate can be used on cotton to control the leggy growth of cotton and increase the number of plant buds. Potassium dihydrogen phosphate is widely used in dropper sprinkler irrigation systems.


Some criminals use potassium sulfate, sodium sulfate and other counterfeit potassium dihydrogen phosphate, which makes farmers often unable to distinguish the authenticity when purchasing. Potassium sulfate and sodium sulfate are whitish in appearance, while potassium dihydrogen phosphate crystals are transparent, so they can be easily identified by appearance.


Precautions:

1. This product can be mixed with neutral and acidic pesticides and fertilizers (except for the prohibition of mixed application).

2. Store this product in a cool, dry place with a shelf life of five years.

3. This product is a high-purity product, please do not increase the dosage at will.

4. This product is hygroscopic, but does not affect the quality and use effect.


Preparation


The first preparation method

It is derived from the action of phosphoric acid and potassium carbonate in an appropriate proportion.


The second preparation method

Slowly add the calculated amount of potassium hydroxide solution to generate neutralization reaction in phosphoric acid to generate potassium dihydrogen phosphate solution, which is then decolorized, filtered, concentrated, cooled, crystallized, and then centrifuged and dried to obtain the finished product.


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