Potassium acetate

• CAS: 127-08-2
• Catalog Number: ACM127082
• Category: Micro/NanoElectronics
• Molecular Weight: 98.14
• Molecular Formula: C2H3KO2
• Description: Potassium acetate (KCH3COO) is the potassium salt of acetic acid.
• Synonyms: Acetic acid potassium
• IUPAC Name: Potassium;acetate
• Canonical SMILES: CC(=O)[O-].[K+]
• InChI: InChI=1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
• InChI Key: SCVFZCLFOSHCOH-UHFFFAOYSA-M
• Melting Point: 292 °C
• Flash Point: >250 °C
• Density: 1.57 g/cm³ at 25 °C (lit.)
• Solubility: Soluble in water
• Appearance: White to light brown solid
• Storage: Room Temperature
• Assay: 0.99
• Complexity: 34.6
• Covalently-Bonded Unit Count: 2
• EC Number: 204-822-2;204-822-2
• Exact Mass: 97.97701082
• Formal Charge: 0
• H-Bond Acceptor: 2
• H-Bond Donor: 0
• Heavy Atom Count: 5
• ICSC Number: 0547
• MDL Number: MFCD00012458
• Monoisotopic Mass: 97.97701082
• Odor: Odorless
• Packaging: 25 kg
• pKa: 9.7 (0.1M solution)
• Refractive Index: n20/D 1.370
• Rotatable Bond Count: 0
• RTECS Number: AJ3325000
• Stability: Stability Deliquescent. Stable. Incompatible with strong oxidizing agents.
• Storage Conditions: Store at RT.
• Topological Polar Surface Area: 40.1 Ų
• UNII: M911911U02

Case Study

Application of High Concentration Potassium Acetate Solution in Electrochemistry

Stigliano, Pierre L., et al. Physical Chemistry Chemical Physics, 2021, 23(2), 1139-1145.

Potassium acetate (KAC) can be used in energy storage devices as a highly soluble, abundantly available, and inexpensive salt. This is due to its suitability in potassium-ion batteries as well as hybrid electrolytes for lithium-ion systems. The solubility of KAC at room temperature is approximately 2700 g/L, and solutions with molar concentrations greater than 20 m can be prepared. At this concentration, the conductivity of the KAC/water solution is 50 mS/cm, i.e. 5 times greater than LiTFSI.
Physico-chemical properties of KAC-H2O solution in electrochemistry
· There is a concentration threshold between 10 and 15 in molality which changes the physico-chemical characteristics of the KAC solutions. Across the entire compositional range, the KAC solutions behave as strong electrolytes.
· Below 10-15 mol/kg all the ions are fully hydrated and long-range ion-ion interactions affect the electrical conductivity.
· Above the limit of 15 mol/kg, the water molecules are not enough to fully screen ion-ion interactions, which affect both the ionic transport properties and the thermal behaviour of the solutions.
· The KAC-20 and KAC-25 can be used in water-based K-ion batteries or even in high-energy supercapacitors, which can take full advantage of this larger potential window.

Custom Q&A

What is the molecular formula of potassium acetate?

The molecular formula of potassium acetate is C2H3O2K.

What is the synonym for potassium acetate?

One synonym for potassium acetate is "Potassium ethanoate."

What is the molecular weight of potassium acetate?

The molecular weight of potassium acetate is 98.14 g/mol.

What is the role of potassium acetate in food?

Potassium acetate has a role as a food acidity regulator.

What is the parent compound of potassium acetate?

The parent compound of potassium acetate is Acetic Acid (CID 176).

What are the component compounds of potassium acetate?

The component compounds of potassium acetate are Potassium (CID 5462222) and Acetic Acid (CID 176).

When was potassium acetate created?

Potassium acetate was created on March 27, 2005.

What are the potential effects of potassium acetate as a nutritional supplement?

Potassium acetate, when taken as a nutritional supplement, may prevent hypokalemia and has potential antihypertensive effects.

How is potassium acetate used in the medical field?

Potassium acetate is used as a potassium salt to replenish electrolytes, restore water-electrolyte balance, and act as a urinary and systemic alkalizer. It can be administered orally or by intravenous infusion.

What are the other identifiers for potassium acetate?

Other identifiers for potassium acetate include CAS number 127-08-2, UNII code M911911U02, and ChEMBL ID CHEMBL1201058.

Synthetic Use

Downstream Synthesis Route 1

• 333-20-0
• 127-08-2
• 54079-68-4
• 64-19-7

• 1681-37-4

Reference: [1] Pharmaceutical Bulletin, 1954, vol. 2, p. 34,36

Downstream Synthesis Route 2

• 127-08-2

• 1003-04-9
• 954-67-6

Reference: [1] Gazzetta Chimica Italiana, 1980, vol. 110, # 4, p. 211 - 214

Downstream Synthesis Route 3

• 127-08-2
• 108-24-7

• 548-83-4

Reference: [1] Journal of the Chemical Society, 1933, p. 368

Downstream Synthesis Route 4

• 111-24-0
• 127-08-2

• 15848-22-3

Reference: [1]Zhurnal Obshchei Khimii,1955,vol. 25,p. 1212,1215; engl. Ausg. S. 1159, 1161

Downstream Synthesis Route 5

• 1647-23-0
• 127-08-2

• 1421-87-0

Reference: [1]Journal of the American Chemical Society,1956,vol. 78,p. 4030

* For details of the synthesis route, please refer to the original source to ensure accuracy.