Details:

Characteristics

• Chinese Name of Chemical:  Potassium Phosphate Monobasic
• English Name of Chemical: Potassium Phosphate Monobasic
• Second Chinese Name: MKP
• Second English Name: MKP

• CAS No.: 7487-88-9
• Molecular Formula:MgSO4
• Molecular Weight: 120.37

Basic Info

Density: 2.338 g/mL at 25 °C (lit.)
Melting point: 252.6 °C (lit.)
Boiling point: > 450 °C
Water solubility: 222 g/L (20 ºC)
Vapor pressure: 0Pa at 25℃
Solubility: In H?O: 1.5M at 20 °C, clear and colorless
Acid dissociation constant: (1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)
pH value: 4.2-4.6 (20g/l, H?O, 20℃)
Storage conditions: Store at +5°C to +30°C.
Stability: Hygroscopic

Potassium Dihydrogen Phosphate - Introduction

Potassium dihydrogen phosphate (chemical formula KH?PO?) is a white crystalline solid that is soluble in water and exhibits acidic properties. It has the following characteristics:

 

1. Acidity: Potassium dihydrogen phosphate will partially dissociate in water to produce hydroxide ions (OH?), so the solution is acidic. (It should be noted that in fact, potassium dihydrogen phosphate in water will dissociate to produce hydrogen ions (H?), making the solution acidic. There is a misunderstanding in the original Chinese description here.)
2. Laboratory reagent: Potassium dihydrogen phosphate is often used as a buffer, pH regulator, and phosphate catalyst in laboratories.

 

There are usually two common methods for preparing potassium dihydrogen phosphate:

 

1. Neutralization reaction: React phosphoric acid (H?PO?) with potassium hydroxide (KOH) under appropriate conditions to obtain potassium dihydrogen phosphate.

2. React potassium hydroxide with diammonium hydrogen phosphate: Reacting potassium hydroxide with diammonium hydrogen phosphate can yield potassium dihydrogen phosphate, and ammonia gas is generated simultaneously.

3. Avoid contact with strong oxidants: Potassium dihydrogen phosphate can react with strong oxidants (such as potassium permanganate) to produce combustible materials.

4. Wear personal protective equipment: When handling potassium dihydrogen phosphate, protective goggles, gloves, and appropriate protective clothing should be worn.

5. Avoid inhalation or skin contact: Potassium dihydrogen phosphate is irritating, and one should avoid inhaling its dust or allowing it to come into contact with the skin.

6. Storage precautions: Potassium dihydrogen phosphate should be stored in a dry and well-ventilated place, and keep it away from flammable substances.

 

When using and storing potassium dihydrogen phosphate, please follow the safety operating procedures for chemicals and take personal protective measures according to the actual situation.

 

 

See More Isooctyl stearate Properties 

Hazard Identification

Classification of the substance or mixture

no data available

GHS label elements, including precautionary statements

Pictogram(s)	no data available
Signal word	no data available
Hazard statement(s)	no data available
Precautionary statement(s)
Prevention	no data available
Response	no data available
Storage	no data available
Disposal	no data available

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Isooctyl stearate Safety Data Sheet 