MONOPOTASSIUM PHOSPHATE

CAS NO: 7778-77-0
EC NUMBER: 231-913-4

Monopotassium phosphate (MKP) (also, Monopotassium phosphate (MKP)phosphate, KDP, or monobasic potassium phosphate) is the inorganic compound with the formula KH2PO4. 
Together with dipotassium phosphate (K2HPO4.(H2O)x) it is often used as a fertilizer, food additive, and buffering agent. 
The salt often cocrystallizes with the dipotassium salt as well as with phosphoric acid.

Single crystals are paraelectric at room temperature. 
At temperatures below −150 °C (−238 °F), they become ferroelectric.

Structure
Monopotassium phosphate can exist in several polymorphs. 
At room temperature it forms paraelectric crystals with tetragonal symmetry. 
Upon cooling to −150 °C (−238 °F) it transforms to a ferroelectric phase of orthorhombic symmetry, and the transition temperature shifts up to −50 °C (−58 °F) when hydrogen is replaced by deuterium.
Heating to 190 °C (374 °F) changes its structure to monoclinic.
When heated further, MKP decomposes, by loss of water, to potassium metaphosphate, KPO3, at 400 °C (752 °F).

Properties
Chemical formula : KH2PO4
Molar mass : 136.086 g/mol
Appearance : White powder, deliquescent
Odor :Odorless
Density    :2.338 g/cm3
Melting point :252.6 °C (486.7 °F; 525.8 K)
Boiling point :400 °C (752 °F; 673 K) , decomposes
Solubility in water :22.6 g/100 mL (20 °C)  -- 83.5 g/100 mL (90 °C)
Solubility : Slightly soluble in ethanol
Acidity (pKa) : 6.86[1]
Basicity (pKb) : 11.9
Refractive index (nD) : 1.4864

Monopotassium phosphate (MKP) phosphate is a kind of highly efficient and rapid dissolving phosphorus and potassium compound fertilizer containing, phosphorus and potassium, two elements for providing the necessary nutrients for plant growth and development, being applicable to any soil and crop, especially being applicable to the treatment of regions of simultaneous lack of phosphorus and potassium nutrients and phosphorus-preferred and potassium-preferred crops. 
Monopotassium phosphate (MKP) is mostly used for root top dressing, seed soaking, and seed dressing, being able to yield significant effect. 
If Monopotassium phosphate (MKP) sued for the roots fertilization, Monopotassium phosphate (MKP) can be used as basal fertilizer, seed fertilizer or moderate-late phase topdressing.
Monopotassium phosphate (MKP)'s aqueous solution can react with silver nitrate, generating yellow phosphorus dihydrogen phosphate precipitation, being able to be used as a differential reaction.
As Monopotassium phosphate (MKP) phosphate is expensive, there is less agricultural production. Therefore, Monopotassium phosphate (MKP) is generally applied of the soaking or root top dressing for application. 
For crop soaking, the commonly used concentration is 0.2%. After dipping 18~20h, the field can be sown after drying. For root top dressing, if spraying alone, the highest concentration can be 0.5%. 
If within the range of jointing-booting stage of wheat and rice, we can spray for 1 or 2 times during the cotton, rape early flowering phase. 
Upon spraying 2 times, the interval can be about 7 to 10 days with the liquid usage amount per acre being about 100~150kg. 
Monopotassium phosphate (MKP) can also be combined with other nutrients to be formulated into compound nutrition for foliage top-dressing. 
For example, the leaf fertilizer used for field crops in North China has its main ingredient be exactly Monopotassium phosphate (MKP) phosphate, urea and the addition inclusion of some trace elements. 
In recent years, the use of blade complex nutrition also mostly adopts the Monopotassium phosphate (MKP) phosphate as a high concentration and excellent hydrophilic phosphate and potassium fertilizer source. 
With the development of facilities of horticultural crops and drip irrigation, fertilizer irrigation, the increasing daily demand for Monopotassium phosphate (MKP) phosphate is also increasing

Uses    
(1) As feed phosphorus additives; In the food industry, Monopotassium phosphate (MKP) is used for the manufacture of baked goods, for leavening agent, flavoring agent, fermentation additives, nutritional fortifiers, yeast food. 
Also used as a buffer, chelating agent.
(2) Monopotassium phosphate (MKP) can be used as fertilizer, flavoring agent and the culture agent of brewing yeast; used for the preparation of buffer solution, also used in medicine and manufacturing of potassium metaphosphate.
(3) Monopotassium phosphate (MKP) can be used for the fertilization of rice, wheat, cotton, rape, tobacco, sugar cane, apple and other crops.
(4) Monopotassium phosphate (MKP) can be used as chromatography reagents and buffer, but also for the synthesis of medicine.
As a highly efficient fertilizer, Monopotassium phosphate (MKP) is suitable for all kinds of soil and crops. 
Monopotassium phosphate (MKP) can also used as a bacterial culture agent, the flavoring agent for the synthesis of sake and the raw material for making potassium metaphosphate. 
In medicine, Monopotassium phosphate (MKP) is used for the uric acidification as a nutritional agent.
(5) Used as feed nutritional supplements;As a quality improver, Monopotassium phosphate (MKP) has effects of improving the complexation metal ions and pH value, increasing the ionic strength of food, and thus improving the adhesion and water holding capacity of food. 
China provides that Monopotassium phosphate (MKP) can be used for wheat flour with the maximum usage amount of 5.0g/kg and 2.0 g/kg in the beverage.

potassium phosphate is a humectant and pH adjuster used in cosmetic formulations. Potassium phosphate is an inorganic salt.

Monopotassium phosphate (MKP) is a buffer, neutralizing agent, and sequestrant. 
Monopotassium phosphate (MKP) is mildly acid, with a ph of 4.5, and fairly soluble in water, with a solubility of 25 g in 100 ml at 25°c. 
Monopotassium phosphate (MKP) is used in whole eggs for color preservation and is also used in low-sodium products, milk products, and meat products. Typical usage ranges from 0.1 to 0.5%.
Monopotassium phosphate (MKP) is also termed monopotassium phosphate or thophosphate, potassium phosphate monobasic, and monopotassium monophosphate.

Monopotassium phosphate (MKP) is a specialty fertilizer that is a good source of phosphorus and potassium.
Monopotassium phosphate (MKP) is an acid, chloride-free, dry soluble fertilizer,and is a natural pH buffer with a buffer pH in pure water of 4.5.Monopotassium phosphate can be solubilized and blended with liquid fertilizers that will not salt out at a low pH, and is also safe to use as a foliar fertilizer.

In buffers for determination of pH. Pharmaceutic aid (buffering agent).

Purification Methods    
Dissolve Monopotassium phosphate (MKP) in boiling distilled water (2mL/g), keep on a boiling water-bath for several hours, then filter Monopotassium phosphate (MKP) through paper pulp to remove any turbidity. 
Cool rapidly with constant stirring, and the crystals are collected on to hardened filter paper, using suction, washed twice with ice-cold water, once with 50% EtOH, and dried at 105o. 
Alternative crystallisations are from water, then 50% EtOH, and again water, or from concentrated aqueous solution by addition of EtOH. 
Monopotassium phosphate (MKP) is freed from traces of Cu by extracting its aqueous solution with diphenylthiocarbazone in CCl4, followed by repeated extraction with CCl4 to remove traces of diphenylthiocarbazone.

Physical properties    
Colorless crystals or white granular powder; tetragonal structure; deliquesces; density 2.338 g/cm3; melts at 252.6°C; soluble in water 33 g/100mL at 25°C; pH 4.4-4.7; insoluble in alcohol.

Monopotassium phosphate (MKP) is used in the following products: fertilisers and washing & cleaning products.
Other release to the environment of Monopotassium phosphate (MKP) is likely to occur from: outdoor use and indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners).

Article service life
Release to the environment of Monopotassium phosphate (MKP) can occur from industrial use: industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).
Other release to the environment of Monopotassium phosphate (MKP) is likely to occur from: outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials) and indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment).
Monopotassium phosphate (MKP) can be found in complex articles, with no release intended: machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines).
Monopotassium phosphate (MKP) can be found in products with material based on: fabrics, textiles and apparel (e.g. clothing, mattress, curtains or carpets, textile toys) and stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material).
Widespread uses by professional workers
Monopotassium phosphate (MKP) is used in the following products: fertilisers, pH regulators and water treatment products, washing & cleaning products, air care products, textile treatment products and dyes and laboratory chemicals.
Monopotassium phosphate (MKP) is used in the following areas: agriculture, forestry and fishing and scientific research and development.
Monopotassium phosphate (MKP) is used for the manufacture of: textile, leather or fur, chemicals and mineral products (e.g. plasters, cement).
Other release to the environment of Monopotassium phosphate (MKP) is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use and indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters).

Monopotassium phosphate (MKP) is used in the following products: fertilisers, pH regulators and water treatment products, pharmaceuticals, textile treatment products and dyes, washing & cleaning products, air care products and fillers, putties, plasters, modelling clay.
Release to the environment of Monopotassium phosphate (MKP) can occur from industrial use: formulation of mixtures and formulation in materials.
Uses at industrial sites
Monopotassium phosphate (MKP) is used in the following products: pharmaceuticals, pH regulators and water treatment products, textile treatment products and dyes, fertilisers and laboratory chemicals.
Monopotassium phosphate (MKP) is used in the following areas: scientific research and development.
Monopotassium phosphate (MKP) is used for the manufacture of: chemicals and textile, leather or fur.
Release to the environment of Monopotassium phosphate (MKP) can occur from industrial use: in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), of substances in closed systems with minimal release and as processing aid.
Other release to the environment of Monopotassium phosphate (MKP) is likely to occur from: indoor use as processing aid and indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters).

Monopotassium phosphate (MKP) is a potassium salt in which dihydrogen phosphate(1-) is the counterion. 
Monopotassium phosphate (MKP) has a role as a fertilizer. 
Monopotassium phosphate (MKP) is a potassium salt and an inorganic phosphate.

Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, KDP, or monobasic potassium phosphate), KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion. 
Monopotassium phosphate (MKP) is a source of phosphorus and potassium as well as a buffering agent. 
Monopotassium phosphate (MKP) can be used in fertilizer mixtures to reduce escape of ammonia by keeping pH low.

Drug Indication    

Used in buffers (determination of pH, pharmaceutical production, urinary acidifier, paper processing, baking powder, and food), nutrient solutions, yeast foods, special liquid fertilizers, sonar systems and other electronic applications.
Used as a nutritional supplement in foods, a nonlinear optical material for laser use, and in wastewater treatment.

Therapeutic Uses    

The solution is intended to provide phosphate ion, (PO4-3) for addition to large volume infusion fluids for intravenous use. 
Monopotassium phosphate (MKP) Injection, USP, 3 mM P/mL, is indicated as a source of phosphorus, in addition to large volume intravenous fluids, to prevent or correct hypophosphatemia in patients with restricted or no oral intake. 
Monopotassium phosphate (MKP) is also useful as an additive for preparing specific intravenous fluid formulas when the needs of the patient cannot be met by standard electrolyte or nutrient solutions. 
The concomitant amount of potassium (4.4 mEq/mL) must be calculated into total electrolyte content of such prepared solutions.

Urinary acidification by potassium and sodium phosphates combination and monobasic potassium phosphate augments the efficacy of methenamine mandelate and methenamine hippurate, which are dependent upon an acid medium for antibacterial activity. 
Phosphates eliminate the odor, rash, and turbidity present with ammoniacal urine associated with urinary tract infections. 
However, use of phosphates for urea splitting urinary tract infections may predispose to struvite stones that form in alkaline urine.

Potassium and sodium phosphates combination and monobasic potassium phosphate have been used to reduce urinary calcium concentration and help prevent precipitation of calcium deposits in the urinary tract.

At the renal distal tubule, the secretion of hydrogen by the tubular cell in exchange for sodium in the tubular urine converts dibasic phosphate salts to monobasic phosphate salts. 
Therefore, large amounts of acid can be excreted without lowering the pH of the urine to a degree that would block hydrogen transport by a high concentration gradient between the tubular cell and luminal fluid.

Pharmacology    
Potassium is the major cation of intracellular fluid and is essential for the maintenance of acid-base balance, isotonicity, and electrodynamic characteristics of the cell. 
Potassium is an important activator in many enzymatic reactions and is essential to a number of physiologic processes including the transmission of nerve impulses, contraction of cardiac, smooth, and skeletal muscles, gastric secretion, renal function, tissue synthesis, and carbohydrate metabolism. 
Phosphate is a major intracellular anion that participates in providing energy for the metabolism of substrates and contributes to important metabolic and enzymatic reactions in almost all organs and tissues. 
Phosphate exerts a modifying influence on calcium concentrations, a buffering effect on acid-base equilibrium, and has a major role in the renal excretion of hydrogen ions.

Uses
General adhesives and binding agents for a variety of uses    
Relating to agricultural, including the raising and farming of animals and growing of crops
Related to animals (but non-veterinary) e.g., animal husbandry, farming of animals/animal production, raising of animals for food or fur, animal feed, products for household pets 
Related to the growing of flowers as crops    
Products used on crops, or related to the growing of crops    
Related to fruit crops, or the processing or preserving of fruit    
Nut crops, and nuts for human consumption    
Buffer or pH regulating agent    
Related to ceramic products    
Materials used in the building process, such as flooring, insulation, caulk, tile, wood, glass, etc.
Modifier used for chemical, when chemical is used in a laboratory    
Reagents
Related to all forms of cleaning/washing, including cleaning products used in the home, laundry detergents, soaps, de-greasers, spot removers, etc
Drug product, or related to the manufacturing of drugs
Pharmaceutical related    
Related to food production (restaurants, catering, etc)    
Related to dairy cattle, the operation of dairy facilities, or manufacture of dairy products
Related to the activity of fishing    
Fertilizer for consumer or industrial use, and manufacturing of fertilizers    
Includes antifoaming agents, coagulating agents, dispersion agents, emulsifiers, flotation agents, foaming agents, viscosity adjustors, etc
Includes spices, extracts, colorings, flavors, etc added to food for human consumption
General flavoring agents used in foods, including condiments and seasonings    
Related to the farming of meats (including cattle, poultry, swine), and the manufacturing of meat for human consumption
Includes food packaging, paper plates, cutlery, small appliances such as roasters, etc.
Related to forestry    
Fragrances or odor agents, can be used in home products (cleaners, laundry products, air fresheners) or similar industrial products
Related to the activity of hunting    
Agricultural chemicals used on a variety of crops    
Related to computers or the manufacturing of computers
Related to manufacturing for export
Fertilizer for consumer or industrial use, and manufacturing of fertilizers    
Beverages for human consumption (e.g., juice, water, alcohol), or related to beverages for human consumption (e.g. machinery for production of beverages, or facilities serving beverages)
Related to dairy cattle, the operation of dairy facilities, or manufacture of dairy products
Chemicals in cigarettes, or tobacco related products, or related to the manufacturing of tobacco products
Related to metals - manufacturing of metals, casting of metals, production of metals, surface treatment of metals, etc
Non-metallic mineral products and their manufacture    
Substances used for preventing, destroying or mitigating pests    
Various types of paint for various uses, modifiers included
Nutritive medium, no additional information known    
Personal hygiene deodorant products    
Substances used for preventing, destroying or mitigating pests    
Active ingredients in a product
Chemical which can deter, destroy, or control a harmful organism by chemical or biological means
Type of pesticide
Inert ingredients in a pesticide    
Includes spices, extracts, colorings, flavors, etc added to food for human consumption
Includes preservatives used in cosmetics, film, wood preserving agents, foods, etc
Related to photography, film, photographic equipment, photographic laboraties, photochemicals, and developing of photographs
Related to the process of printing (newspapers, books media, etc), printing inks, toners, etc
Accelerators, activators, oxidation agents, reducing agents, etc    ,

Industry Uses
Agricultural chemicals (non-pesticidal)
CHEMICAL DISTRIBUTION
Corrosion inhibitors and anti-scaling agents
Intermediates
Laboratory chemicals
Plating agents and surface treating agents
Processing aids, not otherwise listed

Consumer Uses
Agricultural products (non-pesticidal)
CHEMICAL DISTRIBUTION
Cleaning and furnishing care products
Electrical and electronic products
Ink, toner, and colorant products
Laboratory Use
Lawn and garden care products
Non-TSCA use

Methods of Manufacturing
Potassium monophosphates are usually produced by the same process as the corresponding sodium salts, i.e., from phosphoric acid and potassium hydroxide. 
For KH2PO4, the cheaper potassium chloride is also used instead of KOH. 
Various methods have been suggested for quantitative removal of the hydrogen chloride formed: use of ion exchangers, long-chain tertiary amines, or distillation with octane.

General Manufacturing Information
Industry Processing Sectors
Agriculture, forestry, fishing and hunting
Food, beverage, and tobacco product manufacturing
Paint and coating manufacturing
Pesticide, fertilizer, and other agricultural chemical manufacturing
Pharmaceutical and medicine manufacturing
Wholesale and retail trade

Monopotassium Phosphate (MKP)  is a highly pure Phosphate fertilizer, which dissolves rapidly and completely. 
Monopotassium Phosphate (MKP)  has limited caking sensitivity and is recommended during root and shoot development in early stages, up until flowering and early fruit set. 
The high level of Phosphate in our formula increases cell division and the development of new plant tissue. 
The presence of Potassium plays an important role in protecting the plant from early stress, as well as providing good support for the fruits in the early fruit set.

Improves root and shoot growth
Limits vegetative growth as of fruit setting
Developed for fertigation in open fields and greenhouses. 
Also suitable for foliar application

Molecular formula: H2KO4P
Molar mass: 136.086
CAS Registry Number: Not available
Appearance: Potassium dihydrogen phosphate, 98+%; Potassium dihydrogen phosphate, ACS, 99.0% min; Potassium dihydrogen phosphate, Puratronic®, 99.999% (metals basis), Si 10ppm max; Potassium dihydrogen phosphate, 98+%; Potassium dihydrogen phosphate, ACS, 99.0% min; Potassium dihydrogen phosphate, Puratronic®, 99.999% (metals basis), Si 10ppm max; odourless white crystals or powder
Melting point: 252.6 °C
Solubility: Slightly soluble in water. Insoluble in alcohol

Monopotassium Phosphate, an eco-friendly fertilizer makes for strong roots when your plants need it most.

Jumpstart your harvest this season with our 100 percent water-soluble and heavy metal-free Monopotassium Phosphate plant fertilizer that helps establish firm roots early in the growing season to ensure your crops are full and healthy.

Our Monopotassium Phosphate fertilizer contains 52% phosphorous and 34% potassium and is a highly efficient and effective form of fertilizer that feeds your plants with the nutrition they need to thrive in any crop condition.

Monopotassium Phosphate is also a critical source of nutrition for sugar-rich foods such as fruits who experience an increased sugar content leading to a fresh, ripe and delicious harvest.

Why Do My Crops Need Phosphorus?
Phosphorus helps regulate protein synthesis in plants which leads to healthy development, cell division and ultimate growth for the plant.

Phosphorus helps new plant tissue form and when additional quantities are added to the soil, root growth is exponential, making the plant more resistant to changing weather conditions.

A lack of phosphorus in your crops can yield disaster if not treated immediately. Proactivity is best when fertilizing.

Stay ahead of the problem as always by applying the correct amount of Monopotassium Phosphate fertilizer as needed.

Be on the lookout for extreme cases where plants that have changed dark green in color as this can signal a phosphorus deficiency.

Anthocyanin pigments which appear as red to purple in color can also signify a lack of phosphorus in sugar-rich plants.

Phosphorus deficiency however, doesn't have to show these extreme effects, the changes can be subtle and unnoticeable until it's too late to bring the crop back to life.

Low phosphorus levels in the soil can be raised with the help of Monopotassium Phosphate, a heavy metal free, water soluble solution that your plants will respond positively to.

Why Do My Crops Need Potassium?

The second critical component in our Monopotassium Phosphate eco-friendly fertilizer contains the essential plant nutrient, potassium.

This macronutrient is often difficult to manipulate and can benefit from the controlled application of a potassium supplement to ensure your crops get the correct amount of this precious nutrient to be healthy.

Plants absorb potassium in large amounts. Therefore, the help of a Monopotassium Phosphate fertilizer can keep potassium levels steady to keep feeding your plants the rich nutrients it needs to generate a healthy harvest.

Plants need potassium for many reasons. Potassium makes enzyme activity possible in plants.

It also encourages respiration, transpiration and makes your plants capable of absorbing other vital nutrients.

Potassium is also a key player in the transportation of water and nutrients in the xylem of the plant.

An adequate supply of potassium is critical to the operation of the plant's transport systems.

A healthy crop with a sufficient potassium supply can also increase root growth and helps stop the growth and spread of crop diseases.

Our Monopotassium Phosphate is an eco-friendly fertilizer, that is 100 percent water soluble and heavy metal free.

Give your crops the vital support and nutrients its deserves to produce healthy, bountiful and rich plants.

Monopotassium phosphate is an ionic compound used for electrolyte replenishment and total parenteral nutrition (TPN) therapy.

Used in buffers (determination of pH, pharmaceutical production, urinary acidifier, paper processing, baking powder, and food), nutrient solutions, yeast foods, special liquid fertilizers, sonar systems and other electronic applications; Used as a nutritional supplement in foods, a nonlinear optical material for laser use, and in wastewater treatment;

Pharmacodynamics
Potassium is the major cation of intracellular fluid and is essential for maintenance of acid-base balance, isotonicity, and electrodynamic characteristics of the cell. 
Potassium is an important activator in many enzymatic reactions and is essential to a number of physiologic processes including transmission of nerve impulses; contraction of cardiac, smooth, and skeletal muscles; gastric secretion; renal function; tissue synthesis; and carbohydrate metabolism. 
Phosphate is a major intracellular anion that participates in providing energy for metabolism of substrates and contributes to important metabolic and enzymatic reactions in almost all organs and tissues. 
Phosphate exerts a modifying influence on calcium concentrations, a buffering effect on acid-base equilibrium, and has a major role in the renal excretion of hydrogen ions.

Mechanism of action
hosphorus has a number of important functions in the biochemistry of the body. The bulk of the body's phosphorus is located in the bones, where it plays a key role in osteoblastic and osteoclastic activities. Enzymatically catalyzed phosphate-transfer reactions are numerous and vital in the metabolism of carbohydrate, lipid and protein, and a proper concentration of the anion is of primary importance in assuring an orderly biochemical sequence. ln addition, phosphorus plays an important role in modifying steady-state tissue concentrations of calcium. Phosphate ions are important buffers of the intracellular fluid, and also play a primary role in the renal excretion of the hydrogen ion. Oral administration of inorganic phosphates increases serum phosphate levels. Phosphates lower urinary calcium levels in idiopathic hypercalciuria.

Absorption
Potassium salts are well absorbed from the GI tract. Ingested phosphates are absorbed from the gastrointestinal tract. 
However, the presence of large amounts of calcium or aluminum may lead to formation of insoluble phosphate and reduce the net absorption. Vitamin D stimulates phosphate absorption.

Volume of distribution
Potassium first enters the extracellular fluid and is then actively transported into the cells where its concentration is up to 40 times that outside the cell. 
Dextrose, insulin, and oxygen facilitate movement of potassium into cells.

Protein binding
In healthy adults, plasma potassium concentrations generally range from 3.5-5 mEq/L. 
Plasma concentrations up to 7.7 mEq/L may be normal in neonates.

Mechanism of action
hosphorus has a number of important functions in the biochemistry of the body. The bulk of the body's phosphorus is located in the bones, where it plays a key role in osteoblastic and osteoclastic activities. 
Enzymatically catalyzed phosphate-transfer reactions are numerous and vital in the metabolism of carbohydrate, lipid and protein, and a proper concentration of the anion is of primary importance in assuring an orderly biochemical sequence. ln addition, phosphorus plays an important role in modifying steady-state tissue concentrations of calcium. 
Phosphate ions are important buffers of the intracellular fluid, and also play a primary role in the renal excretion of the hydrogen ion. Oral administration of inorganic phosphates increases serum phosphate levels. Phosphates lower urinary calcium levels in idiopathic hypercalciuria.

Absorption
Potassium salts are well absorbed from the GI tract. 
Ingested phosphates are absorbed from the gastrointestinal tract. 
However, the presence of large amounts of calcium or aluminum may lead to formation of insoluble phosphate and reduce the net absorption. 
Vitamin D stimulates phosphate absorption.

Volume of distribution
Potassium first enters the extracellular fluid and is then actively transported into the cells where its concentration is up to 40 times that outside the cell.
Dextrose, insulin, and oxygen facilitate movement of potassium into cells.

Protein binding
In healthy adults, plasma potassium concentrations generally range from 3.5-5 mEq/L. 
Plasma concentrations up to 7.7 mEq/L may be normal in neonates.

Monopotassium phosphate (MKP) with formula KH2PO4, is manufactured from phosphoric acid and potassium carbonate. 
Monopotassium phosphate (MKP) is a water soluble, hygroscopic, white, odourless powder. 
Monopotassium phosphate (MKP) is used as a buffering agent, fertiliser and as a fungicide.

Uses for Monopotassium phosphate

Agricultural chemicals (non-pesticidal)
Corrosion inhibitors and anti-scaling agents
Intermediates
Paint additives and coating additives not described by other categories
Plating agents and surface treating agents
Adhesives and Sealants
Agricultural Products (non-pesticidal)
Building/Construction Materials
Lawn and Garden Care Products
Paints and Coatings
Photographic Supplies, Film, and Photochemicals

Properties of Monopotassium phosphate: 

CAS No: 7778-77-0
EINECS No: 231-913-4
Other Names: Potassium dihydrogen phosphate; MKP; Potassium phosphate monobasic;; Phosphoric acid, monopotassium salt
Appearance: White powder
Formula: KH2PO4
Density: 2.338 g/cm3
Molar Mass: 136 g mol/1
Melting point: 252 oC
Solubility: soluble in water 22.6 g/L @20C - 83.5 g/L @90C
pH (1%): 4.5

Water Soluble Grade Monopotassium Phosphate for horticultural applications through fertigation systems.
Krista-MKP is a clean, fully water soluble phosphorus and potassium fertiliser making it particularly suited to a wide range of horticultural crops.
It is a free flowing, fine crystalline powder which dissolves quickly in water.

Water Soluble Grade Monopotassium Phosphate for horticultural applications through fertigation systems.
Monopotassium phosphate (MKP) is a clean, fully water soluble phosphorus and potassium fertiliser making it particularly suited to a wide range of horticultural crops.
Monopotassium phosphate (MKP) is a free flowing, fine crystalline powder which dissolves quickly in water.

Monopotassium phosphate (MKP) quickly dissolves to provide the much needed phosphorous and potassium to plants at all growth stages, in hydroponics as well as soil grown crops. Our product is free of chlorine, sodium and heavy metals. 

Monopotassium phosphate (MKP) can be mixed with all water-soluble fertilisers, except for calcium fertilisers and concentrated magnesium solutions. 
In hydroponic systems, Monopotassium phosphate (MKP) should normally be added to the B tank along with the sulphates and trace elements.

Monopotassium phosphate (MKP) is a clean, fully water soluble phosphorus and potassium fertiliser making it particularly suited to a wide range of horticultural crops. 
Monopotassium phosphate (MKP) is a free flowin. 
Soluble grade mono Monopotassium phosphate (MKP) is a free flowing, fine crystalline powder which dissolves quickly in water without any residues. 
Monopotassium phosphate (MKP) is suited to application through all fertigation systems hydroponics, drip systems, low throw sprinklers, centre pivots and spray units. 
Magnesium Cation balance - high potassium levels in the plant or soil will reduce the availability of magnesium, reducing crop yields and quality. 
Other cations such as ammonium, calcium, hydrogen (low pH) and aluminium can also reduce the availability of magnesium. 
Nitrogen Free Monopotassium phosphate (MKP) contains no nitrogen, making it an ideal source of phosphorus and potassium for late applications to fruiting plants when nitrogen applications need to be controlled. 
Monopotassium phosphate (MKP) is also an ideal source to use in conjunction with nitrogen fertilisers such as calcium nitrate (in separate stock tanks), or potassium nitrate, ammonium nitrate or Urea. 
Disease Foliar applications of Monopotassium phosphate (MKP) may help suppress leaf diseases such as powdery mildew, when infection pressure is low. 
Ammonia Free Monopotassium phosphate (MKP) is ideally suited for applications in hydroponics as it is free of ammonium. 
Compatibility Monopotassium phosphate (MKP) can be mixed with all water soluble fertilisers, except soluble calcium fertilisers and concentrated magnesium fertilisers. 
pH Buffer The phosphorus component in Monopotassium phosphate (MKP) buffers fertigation solutions, keeping the pH stable at around 4.5. 
Monopotassium phosphate (MKP) also buffers chemical solutions, increasing the effectiveness of pesticide sprays. 
Low EC Monopotassium phosphate (MKP) in solution has a low EC at 0.7 mS/cm. 
This means it is a relatively safe fertiliser to use for foliar application as the risk of burning or scorching foliage is minimal.
High purity Monopotassium phosphate (MKP) is free of chlorine, sodium and heavy metals.

Monopotassium phosphate (also potassium dihydrogen phosphate, KDP, or monobasic potassium phosphate, MKP) -- KH2PO4 -- is a soluble salt which is used as a fertilizer, a food additive and a fungicide. It is a source of phosphorus and potassium, and is a buffering agent. 
When used in fertilizer mixtures with urea and ammonium phosphates, it minimizes escape of ammonia by keeping the pH at a relatively low level.

Monopotassium Phosphate MKP is an excellent extra-root topdressing fertilizer. 
Monopotassium phosphate (MKP) is a high-concentration, high-quality, chlorine-free phosphorus potassium fertilizer with extremely low salt value and high nutrient content (99% high-purity potassium dihydrogen phosphate has a nutrient content: phosphorus pentoxide 52% , Potassium oxide 34%), potassium dihydrogen phosphate is suitable for use on a variety of crops. 
Monopotassium phosphate (MKP) not only promotes fruit expansion, color change, and crop metabolism, but also improves crop rooting, frost resistance, and stress resistance.

The use of Monopotassium Phosphate MKP has been very common. 
Although Monopotassium phosphate (MKP) is an acid fertilizer, dihydrogen phosphate and potassium ions can be absorbed separately, so Monopotassium phosphate (MKP) is a physiologically neutral fertilizer. 
High-quality potassium dihydrogen phosphate also has good water solubility at room temperature. 
At 20°C, 100 grams of water can dissolve 22.6 grams, and its nutrient content is P2O5: 52%, K2O: 34%, and the utilization rate is more than 90%. 
Monopotassium phosphate (MKP) is used as the first choice for foliar potassium fertilizer.

1. Generally, foliar spraying is the main method
The spraying concentration is 0.3-0.5%, spraying 2-3 times with an interval of 5-7 days. 
Rice and wheat and other gramineous crops can be used at a certain high concentration, but when using super-high concentration of Monopotassium Phosphate, it is especially necessary to avoid high temperature time. 
Generally, high concentration is not recommended for use in high-temperature seasons. 
Gramineous crops For example, wheat and rice can be sprayed with 100 grams of water and 15 kilograms of water. 
The concentration of potassium dihydrogen phosphate sprayed on other crops should be cautious. 
Generally, higher concentration is not recommended.

2. The best time to spray
Choose to spray in the critical period or peak period of the absorption of phosphorus and potassium by the crops, the effect is the best. 
Better results can be achieved than if the tree is in the flower bud differentiation period and the young fruit to the coloring period. , Reduce pests and diseases.

3. Spraying method
When spraying, spray on the back of the leaves, especially the leaves near the fruit. 
Monopotassium phosphate (MKP) is advisable to spray evenly without dripping.

4. Mixing situation
Monopotassium Phosphate can not only be mixed with boron fertilizer (boric acid, sodium octaborate tetrahydrate), molybdenum fertilizer (ammonium molybdate), but also with chelated medium and trace element fertilizers. 
At the same time, Monopotassium phosphate (MKP) can be mixed with most acidic, neutral bactericidal pesticides and other pesticides, which can play a synergistic effect.

Monopotassium phosphate (MKP), is a potassium dihydrogenphosphate. Monopotassium phosphate is a soluble salt of dihydrogen phosphate and potassium ion. 
Monopotassium phosphate (MKP) is a source of phosphorus and potassium for both animals including humans, and plants. 
Monopotassium phosphate is also applied as a buffering agent in the different chemical reactions in the industry. 
Monopotassium phosphate (MKP) is a good source for ammonium phosphate in feed, generally mixed with urea to increase the effectiveness of the feed as it maintains soil pH and reduces the loss of feed used in the soil. 
Other industrial application includes nutraceutical, cosmetics and personal care, and other industrial application. 
The Monopotassium phosphate market is expected to witness steady global growth over the forecast period owing to its versatile application in growing industries such as hydroponic agriculture, pharmaceutical, and personal care cosmetics. 

Monopotassium phosphate is known by several names. 
It’s commonly referred to as KDP, MKP, or monobasic potassium phosphate. 
The compound can exist in several polymorphs, and single crystals are paraelectric at room temperature. Once cooled below −150 °C they become ferroelectric.

Monobasic potassium phosphate is an integral component of some of the most important commercial fertilizers on the planet. 
Fertilizer-grade MKP powder is often used as a nutrient source for greenhouses and hydroponic farms.

In its crystallized form, the compound has notable non-linear properties. 
It’s frequently used to build optical modulators and non-linear optics like second-generation harmonics. 
Monopotassium phosphate is usually supplied as a white granular powder or in the form of colorless crystals.

Monopotassium phosphate (MKP) is a completely water soluble fertilizer, in a fine crystalline powder formula. 
Monopotassium phosphate (MKP) contains no nitrogen and is an ideal source of phosphorus and potassium. Monopotassium phosphate (MKP) is the ideal fertilizer for plants in every stage of growth.

Phosphorus is an important nutrient for the transportation of energy within cells. 
Monopotassium phosphate (MKP) is also used for the creation of seeds, flower buds and flowers. 
In addition, phosphorus stimulates the growth of the roots and serves as an important building block for cell walls.

Potassium plays a crucial part in the opening and closing of the stomates (pores in the leafs) and in strengthening the plant cells and structure. 
Moreover, this nutrient is needed for several internal processes in the plant.

Usage
Monopotassium phosphate (MKP) is applicable in both substrate and soil crops and easily dissolves in the fertilizer tank. 
Due to the high solubility of Monopotassium phosphate (MKP), this singular fixed fertilizer can be used in several water supply systems, such as drip irrigation, sprinklers and spraying equipment.

Monopotassium phosphate (MKP) is recommended to be dissolved in the B tank, since it precipitates with fertilizers containing calcium. 
Monopotassium phosphate (MKP) can be mixed with other water soluble fertilizers.

IUPAC NAMES
MKP
Mono Potassium Phosphate
MONOPOTASSIUM PHOSPHATE
Monopotassium phosphate
Monopotassium phosphate
monopotassium phosphate, monobasic potassium phosphate
Monopotassium phosphate, Monopotassium phosphate (MKP) phosphate, prim.-Potassium phosphate, Potassium phosphate monobasic
Monopotassium phosphateMonopotassium phosphate (MKP) phosphate
Monopotassium phosphjate
NPK fertilizer : composition content of the registration of the individual constituent: multi-constiuent reaction mass of urea and ammonium dihydrogenorthophosphate and Monopotassium phosphate (MKP)orthophosphate
otassium dihydrogen phosphate
Potasio di-Hidrógeno Fosfato
Potasium dihydrogenorthophosphate
Potasium dihydrogenorthophosphate (MKP)
Monopotassium phosphate (MKP) orthophosphate
Monopotassium phosphate (MKP) orthophosphate
Monopotassium phosphate (MKP) orthophosphate
Monopotassium phosphate (MKP) PHOSPHATE
Monopotassium phosphate (MKP) phosphate
Monopotassium phosphate (MKP) phosphate
Monopotassium phosphate (MKP) phosphate
Monopotassium phosphate (MKP)ORTHOPHOSPHATE
Monopotassium phosphate (MKP)orthophosphate
Monopotassium phosphate (MKP)orthophosphate
Monopotassium phosphate (MKP)orthophosphate
Monopotassium phosphate (MKP)orthophosphate
Monopotassium phosphate (MKP)ortophosphate
Monopotassium phosphate (MKP)phosphate
potassium;dihydrogen phosphate
Tripotassium phosphate
 

SYNONYMS
Potassium phosphate monobasic, anhydrousFCC, ≥ 98.0% (Assay, dried basis)
Potassium phosphate monobasic, anhydrousACS reagent, ≥ 99.0% (Titration)
Potassium Phosphate, Monobasic, Molecular Biology Grade
Monopotassium phosphate (MKP) phosphate cryst. suitable for the biopharmaceutical production EMPROVE bio Ph Eur,BP,JPC,NF
Monopotassium phosphate (MKP) phosphate anhydrous 99.995 Suprapur
PHOSPHATE STANDARD SOLUTION
PHOSPHATE LOW NO 1
PHOSPHATE LOW NO 2
PHOSPHATE SINGLE COMPONENT STANDARD
PHOSPHATE HIGH
PHOSPHATE ION CHROMATOGRAPHY STANDARD
Monopotassium phosphate (MKP) PHOSPHATE, FOR MOLE CULAR BIOLOGY
POTASSIUM PHOSPHATE MONOBASIC PLANT*CELL CULTURE TE
POTASSIUM PHOSPHATE MONOBASIC, PH EUR
PotassiumDihydrogenOrthophosphate(Anhydrous)Ep
PotassiumPhosphate,2MSolution
PotassiumDihydrogenPhosphateFcc
MonopotassiumPhosphateFoodGrade
PotassiumDihydrogenPhosphateBp
PotassiumPhosphateMonobasic,Anhydrous
PotassiumDihydrogenO-PhosphateGr
PotassiumDihydrogenPhosphateNf
MonopotassiumPhosphateTechGrade
PotassiumDihydrogenPhosphateAr
PotassiumDihydrogenPhosphateAcs
Monopotassium phosphate (MKP) phosphate, 99+%
Monopotassium phosphate (MKP) ORTHOPHOSPHATE ANHYDROUS
Potassiumdihydrogenephosphate
POTASSIUM PHOSPHATE, MONOBASIC BIO-REFINED
POTASSIUM PHOSPHATE, MONOBASIC GRANULAR, REAGENT (ACS)
POTASSIUM PHOSPHATE, MONOBASIC POWDER, REAGENT (ACS)
Monopotassium phosphate (MKP) phosphate anhydrous
Potassiumdihydrogenphosphate,99+%(ACS)
phosphate standard for ic
potassium phosphate monobasic solution
MONOBASICPOTASSIUMPHOSPHATE,CRYSTAL,NF
POTASSIUMPHOSPHATEMONOBASIC,CRYSTAL,BIOTECHGRADE
POTASSIUMPHOSPHATEMONOBASIC,CRYSTAL,FCC
POTASSIUMPHOSPHATEMONOBASIC,CRYSTAL,PRIMARYSTANDARD,REAGENTSPECIAL
POTASSIUMPHOSPHATEMONOBASIC,CRYSTAL,REAGENT,ACS
POTASSIUMSALTSOFORTHOPHOSPHORICACID
MONOPOTASSIUMMONOPHOSPHATE
Potassium phosphate, monobasic, extra pure
Potassium phosphate, monobasic, pure
Potassium phosphate, monobasic, for analysis ACS
Phosphoric acid dihydrogen potassium salt
Phosphoricacid,monopotassiumsalt
potassiumhydrogenphosphate(kh2po4)
potassiumorthophosphate,dihydrogen
potassiumphosphate(k(h2po4))
sorensen’spotassiumphosphate
PotassiumPhosplateMonobasic
Acid potassium phosphate
Potassium phosphate, monobasic, extra pure, 99+%
Potassium phosphate, monobasic, for analysis ACS, 99+%
Potassium phosphate, monobasic, pure, 99+%
Potassium phosphate, monobasic,99+%,for analysis ACS
Monopotassium phosphate (MKP) phosphate, Puratronic, 99.999% (metals basis), Si 10ppm max