Description Uses Toxicity Side effects
ChemicalBook > CAS DataBase List > Potassium phosphate tribasic

Potassium phosphate tribasic

Description Uses Toxicity Side effects
Product Name
Potassium phosphate tribasic
CAS No.
7778-53-2
Chemical Name
Potassium phosphate tribasic
Synonyms
Potassium phosphate;TRIPOTASSIUM PHOSPHATE;BUFFER SOLUTION;TKP;POTASSIUM O-PHOSPHATE;potassium phosphate, anhydrous;Anhydrous tripotassium phosphate;Potassium phosphate tribasic hydrate;PotassiuM Phosphate tribasic, anhydrous;Potassium phosphate, tribasic,97%,pure,anhydrous
CBNumber
CB7206120
Molecular Formula
K3PO4
Formula Weight
212.266261
MOL File
7778-53-2.mol
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Potassium phosphate tribasic Property

Melting point:
1340 °C
Density 
2.564 g/mL at 25 °C(lit.)
vapor pressure 
0Pa at 20℃
storage temp. 
room temp
solubility 
water: soluble100mg/mL, clear, colorless
form 
Solid
Specific Gravity
2.564
color 
White
Odor
at 100.00?%. odorless
Water Solubility 
50.8 g/100 mL (25 ºC)
Sensitive 
Hygroscopic
Merck 
14,7660
BCS Class
1
Stability:
Stable. Incompatible with strong oxidizing agents, moisture.
CAS DataBase Reference
7778-53-2(CAS DataBase Reference)
EPA Substance Registry System
Tripotassium phosphate (7778-53-2)
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Safety

Hazard Codes 
C,Xi
Risk Statements 
38-41-34
Safety Statements 
26-39-45-36/37/39
RIDADR 
UN 1805 8/PG 3
WGK Germany 
2
RTECS 
TC8450000
F 
8-10
TSCA 
Yes
HS Code 
28352400
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
P5629
Product name
Potassium phosphate tribasic
Purity
reagent grade, ≥98%
Packaging
1kg
Price
$89.1
Updated
2024/03/01
Sigma-Aldrich
Product number
P5629
Product name
Potassium phosphate tribasic
Purity
reagent grade, ≥98%
Packaging
10kg
Price
$591
Updated
2024/03/01
Alfa Aesar
Product number
041587
Product name
Potassium phosphate, anhydrous, 97%
Packaging
1kg
Price
$137
Updated
2024/03/01
Alfa Aesar
Product number
041587
Product name
Potassium phosphate, anhydrous, 97%
Packaging
5kg
Price
$490
Updated
2024/03/01
Strem Chemicals
Product number
19-3800
Product name
Potassium phosphate, anhydrous, min. 97%
Packaging
250g
Price
$26
Updated
2024/03/01
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Potassium phosphate tribasic Chemical Properties,Usage,Production

Description

Potassium phosphate is a reagent with high buffering capacity, It serves as a buffering agent to regulate pH, Typically used as a component for a wide variety of media used in the culture of microorganisms, as a component in phosphate buffered saline (PBS). It occurs in several forms: monobasic, dibasic, and tribasic (K3PO4). Most pH neutral potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH. Gomori buffers, the most commonly used phosphate buffers, consist of a mixture of monobasic dihydrogen phosphate and dibasic monohydrogen phosphate. By varying the amount of each salt, a range of buffers can be prepared that buffer well between pH 5.8 and pH 8.0 (please see the tables below). Phosphates have a very high buffering capacity and are highly soluble in water.

Potassium phosphate is used as a fertilizer and food additive. It is also used in optical modulators and for non-linear optics such as second-harmonic generation (SHG). It is involved in the phase-transfer catalyzed preparation of acetylenes from the corresponding vicinal dibromo compounds through double dehydrobromination. It is also useful for the oxidative coupling of thiols to disulfide.

Uses

  1. Potassium phosphate is an acidity regulator and chelating agent (used to bind metal ions). It prevents desiccation and is used as an acid stabiliser in powders as well as to prevent formation of clumps. It increases the activity of antioxidants.
  2. In the food industry (Food additives), it is used as emulsifier, potassium fortifier, flavoring agent, meat binder. Potassium phosphate helps stabilize, thicken and regulate the acidity and moisture in foods. According to the provision of the FAO(1984), its application and limited amount is as below: instant broth; total phosphate salt: 1000 mg/kg (calculated based on P2O5); cooked pork forelegs, ham, cooked minced meat 3g/kg (single usage amount or combination amount with other phosphate, calculated on P2O5); low concentrated milk powder, condensed milk, dilute cream: 2 g/kg (single usage amount); combination amount with other stabilizer: 3 (calculated on anhydrous substance); milk powder, processed cheese: 5g/kg; processed cheese, the total amount of phosphate 9g/kg (calculated as phosphorus); cold drink: 2g/kg (single usage amount or combination amount with other phosphate, calculated on P2O5).
  3. It can be used for the preparation of pasta products with alkaline water.It can be used for the manufacture of liquid soap, high-quality paper, refined gasoline, high-quality paper, being the phosphorus and potassium fertilizers. It can be used as boiler water softener. Also used in medicine.Potassium phosphate is sometimes used as a medicine. It can have a diuretic effect and act as a laxative when used in medicinal amounts. However, phosphorus can interact with some medications, including corticosteroids and potassium-sparing diuretics, increasing the risk for adverse effects; only use it when advised to do so by a doctor.
  4. It can be used as analytical reagent, buffer and softener.

Toxicity

ADI 0 to 70 (calculate based on the total phosphate as phosphorus; FAO/WHO, 2001).
ADI 0 to 70 mg/kg (calculated as phosphorus, FAO/WHO, 1985). It is generally recognized as being safe (US Food and Drug Administration, 1985). According to the provision of the FAO(1984); instant broth; total phosphate salt: 1000 mg/kg (calculated based on P2O5); cooked pork forelegs, ham, cooked minced meat 3g/kg; low concentrated milk powder, condensed milk, dilute cream: 2 g/kg; milk powder, processed cheese: 5g/kg; processed cheese, the total amount of phosphate 9g/kg (calculated as phosphorus); cold drink: 2g/kg.

Side effects

Phosphates are normal essential salts for the body. In view of the need to avoid calcium deficiency, their use is limited, as they bind up calcium readily. They have no side effects.

Chemical Properties

white powder or crystals

Physical properties

Colorless orthorhombic crystals; deliquescent; density 2.564 g/cm3at 17°C;melts at 1,380°C; very soluble in water, 90 g/100mL at 20°c; aqueous solutions strongly alkaline; insoluble in alcohol.

Uses

It is used as a buffering agent.

Uses

Potassium phosphate tribasic is a reagent with a very high buffering capacity. It is widely used in molecular biology, biochemistry, and chromatography, used for the extraction of keratohyalin protein from bovine tissue, to study the effects of freezing and thawing on the stability of proteins sensitive to conformational changes. It is used as a food additive for its properties as an emulsifier, foaming agent, and whipping agent.

Uses

Potassium phosphate tribasic has been used:

  • in lysis buffer for the isolation of protein from Gram positive bacteria
  • as a reagent for the scalable synthesis and post-modification of NU-1000 (mesoporous metal-organic framework)
  • as a reagent for the plasma membrane preparation of Lilium davidii or Oryza sativa with high purity

Definition

ChEBI: Tripotassium phosphate is an inorganic potassium salt that is the tripotassium salt of phosphoric acid. It is an inorganic phosphate salt and an inorganic potassium salt.

Preparation

The tribasic salt is produced by complete neutralization of phosphoric acid with potassium hydroxide, followed by evaporation and crystallization:H3PO4+ 3KOH →K3PO4+ 3H2O.

General Description

Potassium phosphate tribasic exhibits high catalytic property in trans esterification reactions. It has bactericidal activity.

Flammability and Explosibility

Not classified

Potassium phosphate tribasic Preparation Products And Raw materials

Raw materials

Potassium hydroxide Phosphoric acid Potassium hydroxide solution

Preparation Products

Isothioate 3-AMINOBIPHENYL Potassium triphosphate 3-PHENYLBENZYLAMINE PENICILLINASE Starch, phosphate Chlorophyll b acrylonitrile fiber oil 1^<#^> Chlorophyll A CHLOROPHYLL 2-(Allyloxy)phenol Potassium Phosphate Monobasic 4-Vinylpyridine
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View Lastest Price from Potassium phosphate tribasic manufacturers

HebeiShuoshengImportandExportco.,Ltd
Product
Potassium phosphate tribasic 7778-53-2
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-01
Hebei Longbang Technology Co., Ltd
Product
Potassium phosphate tribasic 7778-53-2
Price
US $7.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20TONS
Release date
2024-05-17
Shandong Deshang Chemical Co., Ltd.
Product
Potassium phosphate tribasic 7778-53-2
Price
US $9.30-6.20/kg
Min. Order
1kg
Purity
99%
Supply Ability
10 tons
Release date
2024-07-09

7778-53-2, Potassium phosphate tribasicRelated Search:

PHOSPHATE STANDARD Potassium Phosphate Monobasic Ammonium dihydrogen phosphate FERRIC PHOSPHATE Losartan potassium Potassium sorbate Zinc phosphate Calcium phosphate Potassium chloride Creatine phosphate Potassium Phosphate Dibasic phosphate Potassium di-tert-butyl phosphate DI-TERT-BUTYLPHOSPHATE, TETRABUTYLAMMONIUM SALT Trimethyl phosphate Dibenzyl phosphate Sodium phosphate monobasic DIETHYL PHOSPHATE

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  • Potassium phosphate tribasic Vetec(TM) reagent grade, 97%
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