Potassium Phosphate Monobasic CAS 7778-77-0
Potassium Phosphate Monobasic CAS 7778-77-0

Potassium Phosphate Monobasic CAS 7778-77-0

Potassium Phosphate Monobasic CAS 7778-77-0, Potassium Phosphate Monobasic, CAS 7778-77-0

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Solubility: Readily soluble in water (the aqueous solution is acidic, pH 4.2-4.7), insoluble in ethanol.

7778-77-0

H2KO4P

136.085541

231-913-4

Potassium Phosphate Monobasic CAS 7778-77-0 Information

CAS 7778-77-0
Molecular formula H2KO4P
Molecular weight 136.085541
EIENCS 231-913-4
Form powder
Melting point 252.6°C
boling point > 450°C
Density 2.338 g/mL at 25°C
Solubility It is readily soluble in water (the aqueous solution is acidic, with a pH of 4.2-4.7), but insoluble in ethanol.
PKA /
Color White transparent
Storage temp

Potassium Phosphate Monobasic CAS 7778-77-0

What is Potassium Phosphate Monobasic CAS 7778-77-0?

Chemical Name: Potassium monophosphate (also known as potassium dihydrogen phosphate, acidic potassium phosphate)

Molecular formula: KH₂PO₄

Molecular weight: 136.09 g/mol

CAS Number: 7778-77-0

EINECS No. : 231-913-4

Appearance: Colorless to white crystals or crystalline powder, odorless.

Solubility: Readily soluble in water (the aqueous solution is acidic, pH 4.2-4.7), insoluble in ethanol.


Potassium Phosphate Monobasic CAS 7778-77-0 Use

1. Agriculture

High-efficiency compound fertilizer: With a total nutrient content (P₂O₅ + K₂O) of 86%, it is suitable for crops such as rice, wheat, cotton, and tobacco, enhancing lodging resistance and yield.

Drip irrigation system: Widely used in water-soluble fertilizers, especially suitable for phosphorus and potassium deficient soils.


2. Food and feed industry

Food additives

Leavening agent (baked goods), fermentation aid (yeast culture), flavoring agent (synthetic sake).

Limit standards: Wheat flour ≤ 5.0g /kg, beverages ≤ 2.0g /kg.

Feed phosphorus supplement: It meets the phosphorus requirements of livestock and poultry and enhances bone development.


3. Medicine and Laboratory

Buffer: Prepare ph-stabilizing solutions for serum inorganic phosphorus detection and bacterial culture media (such as leptospirosis test).

Pharmaceutical synthesis: Raw materials for uric acid agents and nutritional supplements.


4. Industry and Materials

Fine chemicals: Manufacturing potassium metaphosphate and polymer additives.

Electronic components: used in the production of piezoelectric crystals and laser harmonic generators.


Potassium Phosphate Monobasic CAS 7778-77-0 safety

Health risk

Low toxicity (oral LD₅₀ >5000 mg/kg in rats), but the dust irritates the respiratory tract and can cause burns when in contact with the eyes.

Storage requirements

Store in a sealed container in a cool and dry place with a relative humidity of less than 75%.

Do not store together with strong acids or toxic substances. Protect from rain and direct sunlight during transportation.

Leakage treatment: Adsorb with sand and collect. Avoid rinsing with water (deliquescent).


Deshangchemical Info

  • ● Comgpany name : Shandong Deshang Chemicals Co., Ltd.
  • ● Main products : Treatments, sedimentation agents, flame retardants, catalysts, matte pigments, talcum powder, PVC additives, antifreeze agents, cellulose, cleaning agents, coconut oil, hydroxyethyl, cosmetics, matte agents, betaine, disinfectants, photosensitizers, humidifying agents, blue pigments, curing agents, potassium formate, sodium formate, cyclohexanol, preservatives, grinding aids.
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