Mubychem Group, established in 1976, is the pioneer manufacturer of Potassium Phosphate Monobasic, Pharmaceutical, Fragrance & Flavor chemicals in India. Mubychem Group has several manufacturing facilities spread across Gujarat and Mumbai India and world wide contacts and toll manufacturers. We are exporting globally to countries like USA, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Indonesia, Spain etc.

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Potassium Phosphate Monobasic
CAS Number 7778-77-0, Mono Potassium Phosphate, Monopotassium Phosphate, Monobasic Potassium Phosphate

Monopotassium Phosphate

Monopotassium Phosphate Specifications; Monobasic Potassium Phosphate Monobasic

Appearance Fine White Crystals
Purity on dry basis 98% min Mono Potassium Phosphate
P2O5 Content 51.5% min
pH of 1% solution 3.9-5
Heavy Metals  20 ppm max
Arsenic 3 ppm max
Moisture 3% max
Insoluble 0.1% max

Potassium Dihydrogen Phosphate BP Ph Eur Grade Specifications
Monopotassium Phosphate BP

KH2PO4 -- 136.1 -- CAS Number 7778-77-0
Monobasic Potassium Phosphate BP
Potassium Phosphate Monobasic BP

Potassium dihydrogen phosphate contains not less than 98.0 per cent and not more than the equivalent of 100.5 per cent of KH2PO4, calculated with reference to the dried substance.

A white, crystalline powder or colourless crystals, freely soluble in water, practically insoluble in alcohol.

A. Solution S (see Tests) is faintly acid.
B. Solution S gives reaction (b) of phosphates.
C. 0.5 ml of solution S gives reaction of potassium.

Solution S
Dissolve 10.0 g in carbon dioxide-free water prepared from distilled water and dilute to 100 ml with the same solvent.
Appearance of solution
Solution S is clear and colourless.
To 5 ml of solution S add 5 ml of carbon dioxide-free water. The pH of the solution is 4.2 to 4.5.
Reducing substances
To 5 ml of solution S add 5 ml of dilute sulphuric acid and 0.25 ml of 0.02 M  potassium permanganate. Heat on a water-bath for 5 min. The colour of the permanganate is not completely discharged.
Dilute 2.5 ml of solution S to 15 ml with water R. The solution complies with the limit  test for chlorides (200 ppm).
To 5 ml of solution S add 0.5 ml of hydrochloric acid and dilute to 15 ml with  distilled water. The solution complies with the limit test for sulphates (300 ppm).
0.5 g complies with limit test A for arsenic (2 ppm).
10 ml of solution S complies with the limit test for iron (10 ppm).
If intended for use in the manufacture of parenteral dosage forms, it complies with the  test for sodium. Not more than 0.1 per cent of Na, determined by atomic emission spectrometry
Heavy metals
12 ml of solution S complies with limit test A for heavy metals (10 ppm).
Loss on drying
Not more than 2.0 per cent, determined on 1.000 g by drying in an oven at 125C to 130C.

Monobasic Potassium Phosphate USP NF Grade Specifications
Monopotassium Phosphate USP NF

Monobasic Potassium Phosphate USP NF
Mono Potassium Phosphate USP NF
Potassium Phosphate Monobasic USP NF
KH2PO4 136.09
Phosphoric acid, monopotassium salt.
Monopotassium phosphate [CAS 7778-77-0].

Monobasic Potassium Phosphate, dried at 105 for 4 hours, contains not less than 98.0 percent and not more than 100.5 percent of KH2PO4.

Identification A solution (1 in 20) responds to the tests for Potassium 191 and for Phosphate.
Loss on drying Dry it at 105 for 4 hours: it loses not more than 1.0% of its weight.
Insoluble substances Dissolve 10 g in 100 mL of hot water, filter through a tarred filtering crucible, wash the insoluble residue with hot water, and dry at 105 for 2 hours: the residue does not exceed 20 mg (0.2%).
Arsenic: 3 ppm.
Lead not more than 5 ppm of Pb).
Heavy metals : the limit is 0.002%.
Limit of fluoride The limit is 0.001%.

Potassium Phosphate Monobasic FCC Food Grade Specifications

Potassium Biphosphate; Potassium Dihydrogen Phosphate;\.
Monopotassium Phosphate FCC
Monobasic Potassium Phosphate FCC
KH2PO4 Formula weight 136.09
INS: 340(i) CAS 7778-77-0

Potassium Phosphate, Monobasic, occurs as colorless crystals or as a white, granular or crystalline powder. It is stable in air. It is freely soluble in water, but is insoluble in alcohol. The pH of a 1:100 aqueous solution is between 4.2 and 4.7.
Function: Buffer; sequestrant; yeast food.

Identification: A 1:20 aqueous solution gives positive tests for Potassium and for Phosphate.
Assay: Not less than 98.0% of KH2PO4 after drying.
Arsenic: Not more than 3 mg/kg.
Fluoride: Not more than 10 mg/kg.
Insoluble Substances: Not more than 0.2%.
Lead: Not more than 2 mg/kg.
Loss on Drying: Not more than 1%.

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. In its crystalline state it is noted for its non-linear optical properties. It is a source of phosphorus and potassium. It is also a buffering agent.

It is one of the components of Gatorade (used as both an emulsifier and pH buffer) and is used as an additive in cigarettes.

Potassium Phosphate, Monobasic is a reagent with a very high buffering capacity. Widely used in molecular biology, biochemistry, and chromatography. Neutral potassium phosphate buffer solutions may be prepared with a mixture of the monobasic and dibasic forms to varying degrees, depending on the desired pH. Potassium Phosphate buffers are very useful in numerous applications. It has been used to study the effects of freezing and thawing on the stability of proteins sensitive to conformational changes; it was found that KP buffers offered improved pH stability as opposed to NaP buffers. Potassium Phosphate has also been used for the extraction of keratohyalin protein from bovine tissue.

ACS Specifications   
American Chemical Society

Potassium Phosphate Monobasic ACS Reagent
Potassium Dihydrogen Phosphate ACS
Monopotassium Phosphate ACS
Monobasic Potassium Phosphate ACS

Formula Weight 136.09
CAS Number 7778-77-0

Assay: 99.0% KH2PO4
pH of a 5% solution: 4.1-4.5 at 25C

Insoluble matter: 0.01%
Loss on drying at 105C: 0.2%
Chloride (Cl): 0.001%
Nitrogen compounds (as N) . 0.001%
Sulfate (SO4): 0.003%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.002%
Sodium (Na): 0.005%

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